mud pump valve pot free sample

A wide variety of mud pump valve pot cover options are available to you, You can also choose from new, mud pump valve pot cover,As well as from energy & mining, {2}, and {3}. And whether mud pump valve pot cover is provided, {2}, or {3}.

Choose a used Emsco FB-1600 Triplex Mud Pump from our inventory selection and save yourself some money on your next shallow drilling oilfield project. This Emsco FB-1600 Triplex Mud Pump is used and may show some minor wear.

We offer wholesale pricing on new Emsco FB-1600 Triplex Mud Pump and pass the savings on to you. Contact us to compare prices of different brands of Mud Pump. This equipment is brand new and has never been used.

Our large network often has surplus Emsco FB-1600 Triplex Mud Pump that go unused from a surplus purchase or a project that was not completed. Contact us to see what Emsco FB-1600 Triplex Mud Pump we have in inventory. The surplus Emsco FB-1600 Triplex Mud Pump are considered new but may have some weathering depending on where it was stored. Surplus oilfield equipment is usually stored at a yard or warehouse.

We have refurbished Mud Pumpthat have been used and brought up to functional standards. It is considered a ready to use, working Mud Pump. Please contact us for more information about our refurbished Emsco FB-1600 Triplex Mud Pump. These Mud Pump have been used and brought up to functional standards. It is considered a working Mud Pump. Please contact us for more information about the product.

MUD PUMP Albert A. Ashton. Houston. Tex., assignor to Emseo Derrick & Equipment Company, Los Angeles, Calif., a corporation of California Application October 26, 1942, Serial No. 463,316 i claims. (ci. s- 177) My invention relates to reciprocating pumps, and relates in particular to an improvement in double acting duplex pumps of the type employed in the oil drilling industry for the purpose of pumping drilling mud under high pressure.

It is an object of the invention to provide a pump of this character, which is rigid and amply strong for the service for which it is designed, but is extremely light in weight as compared to many pumps which have been used and are now in use, of no greater capacity.

It is an object of the invention to provide a pump having pistons arranged to be reciprocated through the use of piston rods which are connected to a power source, this pump comprising essentially a front section and a rear section of similar form, these sections being connected together by the application of welds located in a plane or in planes which cross the axes of "the pump cylinders, these welds being disposed between the front and rear sections and joining the same in a rigid lightweight hollow pump structure.

A further object of the invention is to provide in a pump structure of this type front and rear sections adapted to be secured together by use of welds, in a spaced arrangement determined in accordance with the length of the cylinder liner to be employed therein which in turn is controlled by the length of stroke of the pump piston. For example, these front and rear sections may be connected rigidly together in a pump adapted to receive a liner of a length to accommodate a twelve-inch or fourteen-inch stroke, or these sections may be Welded together in positions to receive a longer liner, for example, one which will accommodate an eighteen-inch stroke. In the invention the front and rear sections have pump chambers which provide mouths or openings to. receive the end portions of the liners, there being open spaces betweenthe front and [rear sections across which the liners extend, and in which the liners are exposed. A number of additional advantages result from this arrangement. The amount of metal used in the pump is reduced, and the intermediate portions of the liner are .exposed or have communication with the -exterior of the pump, making it possible for the pump operator to readily observe any leakage Vwhich may occur along the exterior of the pump liner from the pump chambers disposed at the ends of the liner. Being thus observed, the leakage"may be corrected by tightening up on the packing or replacing the same, thereby avoiding the cutting of metal parts as the result of a continued flow of mud under high pressure through the leakage paths.

A further object of the invention is to provide a simple pump section which maybe employed in the manner described herein, this pump section having a U-shaped hollow member comprising a lateially extending hollow inlet body with hollow arms extending upward from the ends of and rear pump sections spaced apart in axial direction, to show the cooperative relation of the front and rear sections.

taken as indicated by the line 3 3" therein, a portion of the view being broken away to show the interior form of the valve pots employed in duplicate in a pump section.

In Fig. l I show a power pumping device comprising a power unit I0 and a pump Il of duplex double acting type. This pump II has therein a pair of cylinders or liners I2 in side by side relation. As shown in Fig. 4, each of these liners I2 receives a piston I3 which is reciprocated through a piston rod I4, these piston rods I4 extending through packing means I5 ycarried `by the end wall i6 of the pump II disposed contiguous to the power unit I0, as shown in Fig. -1.

It will be understood that this power unit IIl has Y therein the customary power driven means for reciprocating the piston rods I4, which need not be shown, since the present invention relates to the iiuid end of the device shown in Fig. 1, namely, the pump II.

The pump Ii has a front section I1, and a rear section I8, these sections being in many respects symmetrical, and involving differences as will be hereinafter pointed out. These sections l1 and I 8 are shown in perspective in Fig. 2, in axial relation so that their points of similarity and dii"- ferences may be observed. Each of these sections, as clearly brought out in Figs. 2 and 3, has a hollow U-shaped member I 8 comprising a bottom laterally extending hollow section 2li. reierred to as the hollow inlet member 20, and upwardly extending hollow legs 2I disposed at and connected to the ends of the hollow inlet member 20, these side portions 2| comprising valve pots for the pump sections, the lower ends of which valve pots communicate with the inlet member 20, and the upper ends of these valve pots"ZI having openings 22 of such size that intakes and discharge valves may be passed therethrough into the valve pots 2|, covers 23 being provided for the openings 22.

Each of the sections I1 and I8 includes a pair of juxtaposed pump chambers 24 of cylindric form. These pump chambers are disposed between the valve pots 2| and are positioned above the hollow inlet member 20. The walls of the `chambers 24 merge with the walls of the valve pots .20, and each chamber 24 communicates through an opening 25 with an intermediate portion of the interior space of a valve pot 2 I. Above the pump chambers 24, each section I1|8 has a hollow outlet member 26, shown as a tubular wall, communicating with the upper portions of the valve pots 2 I. Each of the hollow inlet members 20 has a short cylindric wall 21 dening an opening 28, communicating with the interior of kthe hollow inlet member, as best shown in Fig. 4.

the length of stroke of the pistons to be employed in the pump of which the sections I1 and I8 are to become a part. In this procedure of joining the sections I1 and I8, tubular members 30 and 1I may be interposed respectively between the` connections 21 and 29 of the hollow inlet members 20 `and the hollow outlet members 26, and these tubular members 3D and 3| are joined with the connections 21 and 29 by use of annular bodies of welded metal 32 and 88, applied by use of the electric arc or Oxy-acetylene ilame. When these welds are formed, the sections I1 and I 8 are rigidly connected together. The space between the pump chambers 24 of section I1 and the pump chambers 24 of the section I8 depends upon the spatial relation of the sections I1 and I8, which in turn is determined by the lengths of the inserted tubular members 36 and 3|. Each of the pump chambers 24, as best shown in Fig. 4, has an annular liner receiving mouth 34, and the liners I2 are moved through openings 35 in the leftward ends of the pump chambers 24 of the section I1 into positions, as shown in Fig. 4, wherein the end portions of the liners will extend through the mouths 34 of the chambers 24, and the intermediate portions of the liners I2 will extend across the space between the adjacent ends of the pump chambers 24, as also shown in Fig. 1. Covers 36 are provided for the openings 35, -and the liners I2 are held in position and forced rightwardly so as to compress packing rings 31 and 38, Fig. 4, by` hollow frames 39 pressed rightward by screws 40 which pass through the covers `36.

Means are provided for connecting the hollow inlet members 20 with delivery piping through which the mud is carried to the pump. This means comprises a hanged tubular inlet 4| projecting leftward from the hollow inlet member 20 of the front section I1, as shown in Figs. 2 and 4, so that the delivery piping 42 may be conveniently connected thereto as shown in Fig. 1. Also, outlet means are provided for connecting the hollow outlet members 26 with discharge piping, through which the pumped fluid is conveyed to the rotary hose of the well drilling system. This outlet means consists of a flanged outlet fitting 42, formed integrally with and communicating with the central portion of the tubular member 3|. As shown in Fig. 1, an outlet T 43 is ordinarily connected to the outlet fitting 42, this T 43 having a surge chamber 44 connected to the upper connected to the discharge piping 45, the other branch ofthe T being closed by a blind flange 46.

As hereinbefore explained, the capacity of a pump employing the sections I1 and I8, is determined in part by the spacing of the sections I1 and I8 to accommodate liners oi" a selected length. In the pump II, shown in Figs. l and 4, the liners I2 are relatively long, and the pump, accordingly, has relatively high capacity due to the length of the piston stroke. For a shorter liner I2, the lengths of the tubular members 30 and 3| are decreased accordingly so that the sections I8 and I1 will be brought closer together, and for a liner of minimum length, the section 30 may be entirely eliminated and an extremely short section 8| may be employed, under which circumstances the tubular connections 21 of the sections I1 and I8 will be brought substantially into positions of abutment and will be welded directly together by the application of an annular body of welded metal.

Where the pump is to be operated against extremely high pressures, connecting bars 41 and 48 are provided, these bars 41 being formed in cooperative relation on the sections I1 and I8. above and below the chambers 24, and being con nected together by means incorporating bodies of welded metal. Such means, where the sections I1 and I8 are spaced apart, include inserted bars 50 of proper length, the ends of which are joined to the bars 41 and 48 by welds 5|. It will be understood that when the sections I1 and vI4 are connected together in their closest relation, the ends of the bars 41 and 48 will be substantially in abutment and will be welded directly together. Feet 52 are shown on the lower part of the front section I1, on opposite sides of the central vertical plane of the pump II, for connection to the skids 53 of the power pump assem bly shown in Fig. 1.

As shown in Fig. 3, each valve pot 2| has therevin an annular inlet valve seat 55 through which communication of the inlet member 28 with the opening 25 of the associated pump chamber A24 is obtained, and each valve pot 2| has above the opening 25 an outlet valve seat 58. Inlet and outlet valves 51 and 58 are respectively secured in the valve seats 55 and 56.

1. In a double acting duplex pump having pistons adapted to be reciprocated through piston rods connected to a power source, and a pair of removably secured liners to"receive said pistons, the combination of front and rear pump sections, each of said pump sections having a, pair oi juxtaposed pump chambers formed with liner receiving mouths in which opposite end portions of said liners are received, a transverse hollow inlet member below said pump chambers, a trans- `as to form a rigid pump structure comprising annular bodies of welded metal connecting said hollow inlet members together and connecting said hollow outlet members together, said pump l also embracing means to connect the interiors of said inlet members and said outlet members respectively to intake and discharge pipes.

2. In a double acting duplex pump having pistons adapted to be reciprocated through piston rods connected to a power source, and a pair of removably secured liners to receive said pistons, the combination of: front and rear pump sections, each of said pump sections having a pair of juxtaposed pump chambers formed with liner receiving mouths in which opposite end portions o1" said liners are received, a transverse hollow inlet member below said pump chambers, a transverse hollow outlet member above said pump chambers, means forming inlet valve seats connecting said inlet members with said pump chambers, and means forming outlet valve seats connecting said pump chambers with said outlet member; and means connecting said front and rear sections together in cooperative relation so as to form a rigid pump structure comprising tubular fluid conveying members and annular bodies of welded metal connecting said hollow inlet members together and connecting said hollow outlet members together, said"tubular members being arranged between said sections above and below said pump chambers, and the length of said tubular members determining the spacial relation of said sections, and said pump also embracing means to connect the interiors of said inlet members and said outlet members respectively to intake and discharge pipes.

3. In a double acting duplex pump having pistons adapted to be reciprocated through piston rods connected to a power source, and a pair of removably secured liners to receive said pistons, the combination of: iront and rear pump sections. each of said pump sections having a pair oi" juxtaposed pump chambers formed with liner receiving mouths in which opposite end portions of said liners are received, a transverse hollow inlet member below said pump chambers, a transverse hollow outlet` member above said pump chambers, means forming inlet valve seats connecting said inlet members with said pump chambers, and means forming outlet valve seats connecting said pump chambers with said outlet member; and means connecting said front and rear sections together in cooperative relation so as to form a rigid pump structure comprising an nular bodies of welded metal connecting said hollow inlet members together and connecting said hollow outlet members together, said pump also embracing means to connect the interior of said outlet members to a discharge pipe and means to connect the hollow inlet member of said front section to an intake pipe.

4. In a double acting duplex pump having pistons adapted to be reciprocated through piston rods connected to a power source, and a pair of removably secured liners to receive said pistons. the combination of: front and rear pump sections, each of said Dump sections having a pair of juxtaposed pump chambers formed with liner receiving mouths in which opposite end portions of said liners are received, a transverse hollow inlet memberbelow said pump chambers, a transverse hollow outlet member above said pump chambers, means forming inlet valve seats vconnecting said inlet members with said pump chambers, and means yforming outlet valve seats connectingsaid pump chambers with Vsaid outlet member; and means connecting said front and rear sections together in cooperative relation so as to form a rigid pump structure comprising tubular fluid conveying members and annular bodies of welded metal connecting said hollow inlet members together and connecting said-hollow outlet members together, said tubular members Abeing arranged between said sections above and below said pump chambers, the length of said tubular members determining the spacial relation of said sections, said pump also embracingmeans to connect the interior of said, outlet members to adischarge pipe and means to connectthe hollow inlet member of said frontsection to an intake pipe.

5. In a double acting duplex; pump having pistons adapted to be reciprocated through piston rods connected to a power source, and a pair oi removably secured liners to receive said pistons, the combination of: front and rear pump sections, each of said Dump sections having a pair of juxtaposed pump chambers formed with liner receiving mouths in which opposite end portions of said liners are received, a hollow U-shaped body comprising a transverse hollow inlet member positioned below said pump chambers and a pair oi" valve pots extending upward from the ends of said hollow inlet members along the sides of the respective pump chambers, the intermediate portions of said valve pots communicating with said pump chambers, and each ofsaid valve pots having therein an inlet valve seat below and an outlet valve seat above the point of communication of the valve pot with a pump chamber, and a hollow outlet member communicating with the interiors of said valve pots above said outlet valve seats; and means connecting said front and rear sections together in cooperative relation so as to form a rigid pump structure comprising annular bodies of welded metal connecting said hollow in, let members together and connecting said hollow outlet members together, said pump also embracing means to connect the interiors of said inlet members and said outlet members respectively to intake and discharge pipes.

6. In a double acting duplex pump having pistons adapted to be-reciprocated through piston rods connected to a power source, and a pair of removably secured liners to receive said pistons. the combination of: front and rear pump sections. each of said pump sections having a pair of juxtaposed pump chambers iormed with liner receiving mouths in which opposite end portions of said liners are received, a hollow U-shaped body comprising a transverse hollow inlet member positioned below said pump chambers and a pair of valve pots extending upward from the ends of said hollow inlet members along the sides of the respective pump chambers, the intermediate portions of said valve pots communicating with said pump chambers, and each of said valve pots having therein an inlet valve seat below and an outlet valve seat above the point of communication of the valve pot with a pump chamber, and a hollow outlet member communicating with the interiors of said valve pots above said outlet valve seats; and means connecting said front and rear sections together in cooperative relation so as to form a rigid pump structure comprising t ular iluid conveying members and annular bod es of welded metal connecting said hollow inlet members together and connecting said hollow outlet members together, said tubular member being arranged between said sections above and bliw said pump chambers, the length of said tub ar members determining the spacial relation of said sections, said pump also embracing means to connect lthe interior of said outlet members to a discharge pipe and means to connect ther hollow inlet member of said front section to an intake pipe.

"7. In a double acting duplex pump having pistons adapted to be reciprocated through piston rods connected to a power source, and a pair of removably secured liners to receive said pistons, the combination of: front and rear pump sections, each of said pump sections having a pair of juxtaposed pump chambers formed with liner receiving mouths in which opposite end portions of said liners are received; a hollow U-shaped body comprising a transverse hollow inlet member positioned below said pump chambers and a pair of valve pots extending upward from the ends of said hollow inlet members along the sides of the l respective pump chambers, the intermediate portions o! said"valve pots communicating with said pump chambers, and each of said valve pots having therein an inlet valve seat below and an outlet valve seat above the point of communication of the valve pot with a pump chamber, and a hollow outlet member communicating with the interiors of said valve pots above said outlet valve seats; means connecting said front and rear sections together in cooperative relation so as to form a rigid pump Structure comprising annular bodies of welded metal connecting said hollow inlet members together and connecting said hollow outlet members together, said pump also embracing

Also known as Nova Tech Valve or Roughneck Valve or High Pressure Valve. Full open Seat & wing guided Valve design features a large metal-to-metal bearing area for long life, directly casted urethane insert on valve body results in a perfect round shape that prevents premature failures of the insert. The insert is casted around the serrations, thus failure due to tears from the serrations are eliminated Most importantly the insert is not stretched over the valve during installation; there are no residual stresses left, to shorten insert life.

An air compressor check valve is a device that allows fluid or air to flow in only one direction. When your compressor reaches the unload pressure, the check valves closes to prevent backflow of the air from the tank to the compressor head.

A quick note on check valves: Many times people will find air leaking from the pressure switch. When this occurs, they immediately purchase and install a new pressure switch. Because air still leaks, they call and state that the switch is defective.

If air is leaking consistently, the problem is not the pressure switch - it is the check valve. More than likely it is filled with debris and is not sealing. When this occurs the check valve either needs to be cleaned or replaced.

Any place that you would have high pressure, you will also need a pressure relief valve (also known as a safety valve). A pressure relief valve releases air smoothly and consistently into the atmosphere from the compressor tank if the air pressure becomes too much.

Generally a relief valve will have male threads on one end, with a ring on the other end (as displayed in the photo). By pulling the ring, you are releasing compressed air into the atmosphere in a safe manner. It is pretty rare that you will ever have to use a PRV, but it is necessary to ensure safety.

Depending on the type of compressor you have, an air compressor belt is an essential component of your machine. Most homeowner and smaller handcarry compressors do not use a belt. When you get involved with wheelbarrow or stationary compressors, belts become necessary (especially with virtually all Ingersoll Rand air compressors).A belt works with the pump to help spin the motor to the correct horse power.

Simply put, the unloader valve unloads air when the receiver reaches its set point. Most of the time an unloader valve is located at ornear the pressure switch, and when the switch is turned either on or off, the unloader valve is either opened or closed.

There are many different varieties of unloaders available. They will vary by the type of compressor as well as the manufacturer. By givingus a call at 1-866-208-2797, we can generally let you know what type of valve is necessary.

There are various types of gaskets that are used on compressors depending on what type of compressor that you have. Industrial compressors may have head gaskets, cylinder gaskets, etc, while homeowner compressors may use none at all. These gaskets help create a seal when two items are placed together, such as sealing the cylinder head to the valve plate assembly. Many times these are all combined together in one gasket kit.

13 Special Tools List For HHF-1300 / 1600 Mud Pump, delivered together with the pump...5214 Spare Parts Lift For HHF1300 / 1600 Mud Pump, delivered together with the pump.. 5315 Recommended spare parts . 55

HHF-1300/1600 Mud Pumps are horizontal, triplex single acting reciprocating pumps. It feedshigh-pressure circulated drilling fluid to bottom hole, which flushes the bore-hole bottom andcrushes rocks; furthermore, cools and lubricates drill- bits and carries the cuttings (rock chips) tothe surface.The Pump mainly consists of two components, power and fluid ends. The power end includes theassemblies of frame, pinion shaftcrankshaftcrossheads etc.

assemblies of hydraulic cylindervalves, cylinder liner, piston, suction and discharge manifolds andso on. It is designed and manufactured that all parts and components of the pump conform with therequirements specified by the Specification for Drilling and Well Servicing Equipment (API Spec7K). All easily worn parts at the fluid end such as cylinder liner, piston and valve assemblies etc areuniversal and interchangeable and could be replaced with the same type parts and components inconformity to the above-said API Specification. To avoid air hammer and reduce outlet pressurefluctuationa suction stabilizer and discharge pulsation dampener were respectively installed at thesuction pipes and one side of pump outlet. At the other side of pump outlet, a reset safety valve isinstalled to guarantee that the pump pressure would not excess the rated working pressure. Eachmud pump is equipped with a charging pump to ensure good suction performances for the pumpwhile operating at high strokes.A combination of splash and forced lubrication systems has been used to lubricate all gears,bearings and crossheads in the power end. The cylinder liners and pistons in the fluid end will belubricated, cleaned and cooled by water supplied from a spray pump.For conveniences of daily maintenance, a set of special removers/tools will be delivered togetherwith the pump.Except for differences in the gears and bearings at the power end of the pumps., Frame, fluid endand so on for pump HHF1300 are the same as pump HHF1600. For convenience of usersunderstanding and use, the two pumps are introduced simultaneously in the following texts.

2.2 Performance parametersThe performance parameters for pump HHF1300/1600 are shown in the following table II:Table II Performance parameters for pump HHF1300/1600Diameter of cylinder liner and rated pressureStrokenumbers

The mud pump HHF-1300/1600, manufactured by our company, has been completely assembledand test-operated under full load and then discharged all lube oils from power end before beingdelivered to our customers. The pump must be checked and operated according to the followingmethods and measures before being put into formal services. In order to prevent personal injuryduring the performance of any checking and maintenance processes, it must be shut down and notoperating, all safety and protection facilities installed on the prime mover and drive device shouldbe put in safe positions.

The skid under the HHF-1300/1600 pumps is fit for all types of installations, but it is worth to bementioned that although the frame with box structure at the power end has high resistances tobending, but relatively lower resistances against twist; therefore, the supports under the frame mustbe level and with enough strength to bear the pumps dead load and dynamic forces exerted uponduring operation.3.2

In land installation, it is suggested that a mat base with, at least eight pieces of 31276mm305mmboards be placed under the pump skids along the entire length the positions as shownin the Figure 2. The board under the pump skids must, at least, be 12305mmwider than thewidth of the pump skid runner. More solid foundations are required in case of the installation beinglocated in wet or marshy land.

3.3 Permanent installationsWhile the pump being permanently installed on the structural base or concrete slab on a barge ordrilling platform and the pump skid being fixed by bolts, it is essential that the skid be properlyshimmed to prevent the power frame from possible distortion or twists. The pump skid must besolidly sat down on all shims when all bolts are tightened.In case of barge installation, the pump skid is usually bolted to T-beam, the positions for installingshims are shown in the Figure 2 and 3. Properly shimming should be noted to avoid possible twistor distortion. All shims must exceed the full width of the skid beam flanges and have a minimumlength of 12 (305mm).When integral installations for power unit or electric motor and pump skids are required thepump must be fixed on the skids of the T beam, with retention blocks rather than bolts in thisway the pump could be a bit floating so as to reduce greatly the possible deformation of thepump frame caused by the deformation of barge deck or platform.

Whether to use V- belt or multi-strand chain or universal shaft for the drive between power sourceand the pump, it must be very careful during the whole installation to ensure the longest service lifeand minimize the shut- downs caused by failures from the drive.Upon installation of drive sheave or sprocket, make sure all rust preventatives or greases in the huband on the shaft are removedBurs and rough spots on the keyskeyways and shaft must beremoved so that all keys fit properly in the keyways on the shaft and drive elements. The shaft ofthe pinion gear should be coated with light lube oil or anti-seize oil, and then fit the hub of sheaveor sprocket, tighten all bolts according to the following requirements:Tightening bolts with wrench or wrench with extension pipe may lead to exceeding torque,therefore, it is imperative to adhere to the torque value given in the following table to tighten allbolts, otherwise, it may damage the hub and the sheave by the exceeding tightening force, which isagain multiplied by the wedging action of the tapered surface. In addition, all bolts of hub must betightened alternately and gradually.

3.4.1.1 Checking sheave groove statusBefore installation, check that the sheave grooved are not worn out and getting rounded, otherwise,the V-belt will be damaged quickly. The groove sidewall must be level and straight and there are nodusts, rusts.3.4.1.2 Checking sheave alignmentHaving installed all sheaves and tightened them to working status check their alignment. If thedistances from one side of the two sheaves to the centerline of sheave groove are equal, check thealignment with two tightened strings (for fishing or better for piano) along one side of the twosheaves; one is put above the sheave center and another below the center, and then move one oftwo sheaves until the strings have touched 4 points of the sheave rim; in this way determining thetwo centerlines of the drive sheaves are parallel and their side face be vertical with their axle line.3.4.1.3 adjustment of V-belt pretension forceTo adjust the belt tension, change/increase the central distance between two sheaves until no sag tobe found on the tightening belt side, and the slack side is also tightened but has a bit of sags. Andthen increase a certain of central distance again, for example, if the center distance is 100(2540mm), 1/2 (13mm) is to be increased after completion of adjustment of the central distance;again if the center distance is 150 (3810mm), 3/4 (19mm) is to be increased.Note: Dont obtain belt tension by lifting the pump or by lowing the pump below ground level toallow the belt to be tensioned by pumps weight.3.4.2 Chain drive3.4.2.1 InstallationInstallation and maintenances correctly are important means to extend the service life of chaindrive and chains and sprockets themselves. Many factors such as the width of chain, center distance,speed and load etc. are to be considered when determining the allowable alignment tolerance ofsprockets; since there is no perfect operating method to be applied, therefore, what we can do isto make the chain alignment as exactly as possible. As mentioned above in 3.4.1.2, a more precisealignment can be made with two stretching steel wires (better for piano) along one side of the bothsprockets; one is put above the centerline and another below the centerline, and then move one oftwo sprockets until the strings have touched 4 points of the sprocket rim; in this way, to determine

the two centerlines of sprockets are parallel and their end face be vertical with their axle line.3.4.2.2 Lubrication of chain driveThe lubrication system used for all chain drive in HHF series pumps is an independent one, whichhas its own lube oil pump, reservoir and drive. Filling the lube oil into the chain case must be up tothe indicated height. The lube oil to be used are as follows:Ambient temperature above 32 F 0C

If Ambient temperature below 0F-18C, Please consult a reputable lube oil dealer forrecommendations. As for those approved lube-oil specifications and their supplements, referencesmight be made to the reports/bulletins usually used on lube oil, which are written and published byoil-manufacturer. If there is any discrepancy between manual and the reports/bulletins, thesuggestion from the reports/bulletins shall be prevailed.Owing to the chain lube system being an independent system, the maintenance must be carried outbased on equipments special requirements, which include:n Daily checking oil leveln Daily checking oil statusn Daily checking oil pressure (515psi 0.0350.103MPan Supplying some oils to chainn Checking nozzles working status on the spray tuben Checking the working conditions of the oil pumps drive (V-belts, or chain)Note:a. There is a pressure relief adjusting screw on the rear of the pump housing to adjust the oilpressure.b. When oil pressure is too high or too low, which indicate that the suction and discharge filterscreens need cleaning.

The design of pump suction system has been considered to install the system independently. Toobtain a satisfied suction performance, the HHF series pumps must have positive head (pressure);

the optimum pressure for suction manifold is 2030psi 0.140.21Mpa. Under this pressure,the pump could have the maximum volumetric efficiency and the longest service life forconsumable parts. This pressure can be obtained by 56 charging pump with a 40 hp, 1150-rpmelectric motor. A special kind of device is necessary to keep the charging pump and the triplexpump automatically and synchronously turned on and off. For drilling rigs driven by DC motor,usually a signal sending out from DC control panel actuates the electromagnetic starter; at this time,the air line of drilling pump clutch can provide a group of contactors when clutch is engaged,through which supply power to the electromagnetic starter.The suction pipeline should be arranged with a by pass for the charging pump, to facilitate thedrilling pumps continuous operation when the charging pump is in maintenance or failure. Whenthe drilling pump is operated without charging pump, usually replace a softer suction valve springto improve suction performances.Suction stabilizer is a very efficient supplementary device, which can fully charge the fluid intocylinder liner and greatly eliminate the fluid fluctuations in suction pipes resulting in a smootherflow in the discharge line.Note: Dont connect the discharge pipe of the safety valve to the suction pipeline, since when thesafety valve opens it causes a sudden rise to the system internal pressure; if the pressure is higherthan the rated pressure of the system, it will damage the manifold, suction stabilizer and centrifugalpump etc.

5 Preparation of power endBefore being shipped to the users, the HHF series pump manufactured by our company has beencompletely assembled and test operated. All lube oils have been drained. Before operating thepump, the following operations and checks must be carried out.5.1 Power end lubricationBefore filling lubricant, open inspection window on cover and check power end oil reservoir forpossible accumulation of condensation, and drain and flush the inner chamber by removing thepipe plugs on each side of the pump (see item 2, Fig.7). Fill in the proper brand and quantity oflubrication oil in the power end according to the requirements specified on the designation plate of

pump frame.Recheck oil level after pump has operated for a period of 15 minutes. Shut pump down for about 5minutes until oil stabilized, check oil level gauge (see item 1, Figure 7). It is usually necessary for afew more gallons (10 liters) of oil to be added due to a certain amount being retained in thecrosshead and frame cavities.5.2 Installation and inspection of Crosshead Extension Rods and Diaphragm Stuffing BoxSeals for HHF-1300/1600 PumpAs shown in Figure 4, remove the diaphragm stuffing box and splash- guard (1) and rotatepump so that crosshead is at the front of the stroke, check bolt-tightening status. If the cleanlinessof front part of crosshead and its extension rod and bolt- tightening are not up to the requirements,remove the extension rod and thoroughly clean the crosshead front and the end face of theextension rod; and then insert alignment boss on crosshead extension rod outer circle into thecrosshead bore and install the bolts (2) to the torque: 350370 ft.lbs, (475500N.M), finally lockit with steel wire.

6 Spray pump assemblyThe spray pump assembly consists of spray pump, water tank and spray pipe with nozzles etc. Thefunction of spray pump is to supply water in the form of spray to the cylinder liner and piston toflush, lubricate and cool them to extend the service life of the cylinder liner and piston.

The spray pump is a centrifugal pump, which is electric motor driven and uses water as cooling andlubrication fluid. Attention must be paid to assure the cooling fluid is supplied to the cylinder linerand piston, otherwise immediate damage of piston rubber parts and cylinder liner will occur.The HHF series mud-pumps manufactured by our company use a stationary spray pipe, as shown inFigure 5, which consists of a fixture (1), connecting pipe (2) and spray nozzle pipe (3). It sprays thecooling fluid to inner holes of cylinder liner and piston. The spray nozzle pipe should be checkedoften as the pump works. Through adjustment of water supply to the manifold, to assure enoughcooling fluid to be sprayed directly to piston.

Figure 5Cooling fluid will be transfused by pump (item3, Figure 7), and sucked from water tank (item 5,Fig.7), to the manifold located in the left (right) wall plate of the frame. By regulating the ballvalve (item 4, Fig.7), the pump will supply water to the inside of the cylinder liner withoutsplashing back on the crosshead extension rod. Water should not splash on the extension rodotherwise some of water will spray into the power end contaminating the lube oil.The cooling fluid is returned from frame drainage hole to water tanks setting chamber, and as thefluid flows through the filter screen, the solids settle as shown in Fig. 6.

7 Assembly of fluid end partsThe cross-section of the fluid end is shown in Figure 8, clean and install all parts of the fluid endmust follow the methods as follows.Note: The parts in the fluid end are designed for metal to metal installations to reduce wearcaused by high-pressure fluid which is used in modern high-pressure-pump operations. Based onthis consideration, in order to ensure a reliable sealing between parts in the fluid end, it is requiredto clean all parts thoroughly and have no burs, scores or rusty spots etc7.1 Valves and seatsRemove all three valves pot cover (18), three cylinder heads (16) and plugs (15), andthoroughly clean all machined surfaces in the fluid end with a good cleaning solvent.Make sure all valve seat bores are very clean and dry (free of dirt, grease, anti-rust additivesetc.), and remove all burs and nicks with a fine emery cloth. Clean and dry thoroughly the valveseats and install suction and discharge valve seats into the valve cavity bores and then install thevalve body; knock the upper part of the guidepost with a copper hammer to drive the valve seats inplace, finally install valve springs and other parts.7.2 Cylinder linerInsert liner- seal- rings (1) into the counter-bore of the cylinder. Install the wear plate (2) in placewith stud bolt, and then install liner flange (3), be sure that the liner lock starting point is at the 5oclock position; and coat the inner bore of nut with Locktite gelatin 277, and finally tighten the nutto torque 470510ft.lbs640690N.m.Note: the purpose of putting the thread start point at the position of 5 oclock is to keep the linerlock threads from being damaged. Insert liner seal rings (1) into the counter-bore of the wear plate(2). Coat inner surface of cylinder liner lock (4) with grease and then put the two-half liner-latchingring on the liner and hold them with the O-ring. Lift the cylinder liner and coat cylinder liner lockthreads with grease and put the lead thread start point at the position equivalent to 7 O clock andpush while turning the liner into the liner flange (3). Tighten the liner lock (4) and press the linerend face into position and knock the liner lock tightly with a hammer.

7.5 Lower valve rod guide and cylinder headInstall the lower valve rod guide (12) and slip it on valve body, through flashboard (13) press downthe valve rod guide and press the valve spring simultaneously. Install the locating disk (11) into thecylinder bore; install cylinder head O-ring (14) on the cylinder head plug (15). Coat the O-ring andouter circle of the cylinder head plug with lightweight oil. And push the cylinder head plug andknock the end lightly into the cylinder front-end inner bore. Coat the threads of the cylinder headwith grease; rotate the cylinder head (16) in against and on the plug (15), and then tighten thecylinder head with a force-multiplier tool and hammer provided together with the pump.If the fluid is leaking through the bleeder holes it indicates that the O-rings are damaged or thecylinder head is loose. Never block the bleeder. Once the O-ring fails it will cause the head threadsand other parts be washed out and damaged.

7.6 Valve pot cover (valve pot cover)Install the valve pot cover seal ring (17) into the bore; coat the sealing parts and threads of thevalve pot cover with grease and then tighten the valve pot cover in place with the force-multipliertool and hammer.

Figure 97.9 Accessory manifoldThe accessory manifold is shown in the figure 9. It may be installed on the discharge manifold andopposite to the discharge filter screen assembly. This accessory manifold is connected withpulsation dampener (1) through the discharge bend- tube assembly; and installed a 3-8NPT and a2-11 1/2NPT, the two outlets are connected with reset relief valve (3) and pressure gauge (2)respectively.Note: a bushing will be used when the pressure gauge interface threads are R1 1/2.The accessory and discharge manifolds are connected by flanges; before installation, cleanthoroughly the flange seal ring grooves and then insert the ring gaskets (4), and tighten theconnection nuts (5) to the torque: 12001600ft.lbs16252165N.m. To ensure a uniform forceis exerted on the seal gaskets connections, tightening the nuts should be done cross-alternately.- 21 -

The reset relief valve (3) is installed on the accessory manifold for the purpose of protecting thepump from pressure exceeded the rated value and discharge all the fluids to guarantee safety of themud pump. The reset relief valve must be installed to be able to contact directly to the mud tanks;and no valves may be installed between the relief valve and the discharge line. Pipe the outlet of therelief valve directly to the mud tank by seamless steel pipe and with as few turns in this line aspossible. If a turn is necessary, the elbow bend should be > 120. It is not allowed to pipe theoutlet of the relief valve to the suction pipes of the pump.The flange on the bottom of the KB-75 pulsation dampener (1) is supplied together with R39 ringgasket(6); before installation of pulsation dampener , clean the ring gasket and groove thoroughlyand after installation, tighten the nuts (7) to the torque: 750850ft.lbs10201150N.m. Toensure balanced forces to be exerted, all nuts should be tightened alternately cross ways.Before starting the pump, pre-charge the pulsation dampener to not be more than 2/3 of the pumpdischarge pressure. Maximum pressure is not to exceed 650 psi (4.5 Mpa). The pulsation dampenerwill be charged with nitrogen only.Do not charge with air, oxygen, hydrogen or other easily-burnt and explosion gases.The charging will be conducted with a set of charging equipment (pulsation dampener charginghoses assembly) provided together with the pump, as shown in Figure 10 and the operationsequences are as follows:

Remove dampener pressure gauge cover, rotate vent valve handle about 1/4 1/2 of acircle to release the remaining pressure and make the pressure gauge reading return zero;remove vent valve capping and plug.

To achieve the best results, the dampener pre-charging pressure must not be more than2/3 of the pump discharge pressure, and the maximum charging pressure is 650 psi (4.5Mpa).

For maintenance of the dampener, the pressure in the dampener must be zero and thepump pressure also is zero. Be careful that dont fully rely on the pressure gaugereadings. The vent valve cap must be open to release pressure, the remaining pressuremay be low and the pressure gauge may not read correctly. This low pressure may stillcause an accident.

systems is adopted for HHF series pumps. When a gear oil pump is driven mechanically (exceptdriven by a electric motor), the types of pressure system adopted, in fact, govern the minimumSPM, at which the pump being operated. As for the pressure lubrication systems adopted for HHFseries pumps, they could operate at a minimum 25 SPM; at this time, the lowest oil pressure is 5 psi(0.035 Mpa).Big gear rim

Figure 11Note: The pressure lube oil pump could be installed outside of mud- pump and driven by v-belt orinstalled inside of mud- pump and driven by big gear rim. When the later installation is used, therotating direction of the pinion gear should be as shown in figure 11.

8.2 Flow- controlled splash lubrication systemThe flow- controlled splash lubrication systems are the same for all HHF series pumps, regardlessof the types of oil pump provided for the lubrication system. In the flow-controlled splash system,the big gear rim brings up the oil from the sump; and when its teeth mesh with the pinion, the oil issqueezed out and splashed to various oil troughs and oil cavities in the frame. With reference tofigure 13, the oils are thrown into the trough (7) and flow through pipe (8), to the bearings on thetwo sides of the pinion shaft.The passage that oil flow from the top of the crosshead guide into the crosshead bearings is shownin figure 12. The oils accumulated in oil chamber above the crossheads flow through oil nozzle (1),into the crosshead pin baffle, and then to oil passages (5) to lubricate crosshead bearing. There are- 24 -

8.3 Pressure lubrication systemThe pressure lubrication systems used for HHF series mud- pumps have installed a lube oil pump,as shown in Figure 13; in this system, the filtered oil is sucked in, through the suction filter (1), bythe pump, and then through the block II (2), distributed to the pinion shaft nozzle (3A), mainbearing oil-pipe (4) and the block I (4A) in crosshead chamber again through the block I (4A),distribute oil to the crosshead, its bearing and extension rod.

Figure 13A pressure gauge (5) is mounted on the back base plate of the frame to show oil pressure inthe block oil-distributor, which is obviously changing with the speed of the pump. However, if asudden pressure drop or increase occurs, the reasons caused must be found according to the sectionon Maintenance of lubrication system.A pressure relief valve (6) is mounted on the block II (2) to prevent the pump and its drivefrom possible damage caused by excessive pressure. The relief valve is preset to 80 psi (0.55 Mpa)and then locked down to avoid the preset pressure changing.

Upon built-in installation of the lube oil pump, as shown item 9 in Figure 13, the pump must bewell positioned according to the requirements as shown in the Figure. The side face of the oil pumpgear must be flush and parallel with the side edge of the mud pump main gear rim, and the gearteeth have 0.024-0.0355 (0.60-0.90 mm) backlash.A typical layout for oil pump driven by pinion shaft is shown in Figure 14. The oil pump (1) ispipe-connected to the lube oil pipes system through the suction and discharge adapters mounted onthe bottom inside walls of the power end. Dont over-tighten the V-belt (2) to prevent the pumpfrom premature damage. To avoid possible injury, the V-belt guard, as shown item 3 in Figure 14,must be installed before the pump being operated.

8.4 Maintenance of lubrication systemSufficient lubrication of all moving parts is the most important factor to extend the service life ofthe pump; being meticulous in maintenance of the lube oil system is a duty for all operators. In fact,a good or poor maintenance of the lube oil system determines a long or short trouble-free servicelife of the pump.The recommended lubrication oil is as follows; and also shown on nameplate fixed on the pumpside. All data recommended are the results of long-period tests in the oil field; therefore, anysubstitution of oil recommended could only be used for emergency conditions.

Every shift should make their rounds to check the oil level and maintain the level at the FULLposition; in view of oil level compensation, it is allowed to drive the pump for 5 minutes at a slowspeed and make sure the oil level at the specified position.Check once every 6-month if the oil has any sand and corrosive compounds in it or not; it shouldbe drained. Drain all the oil and flush the oil reservoir before adding new oil. The oil drains arelocated on either side of the pump frame. During flushing, thoroughly clean the oil troughs and thechambers under the crosshead guides, and also clean or replace the filter element in the suction oilfilter, and clean the suction filter screens. Before filling new oil remove the drain cover from settingchamber and clean out contaminants.Regularly check the condition of the lube oil and replace if contaminated ;moisture in the air,ingress of water and mud, and dirt may enter and contaminate the oil.The settling chamber (deposit chamber) is located in the crosshead guide area of power end; thecontamination in the oil splashed into this area is allowed to settle and be drained out by removingthe drain cover that located on the two sides of the frame under crosshead inspection cover.Check once every month. Remove drain covers at pump two sides to drain out the contaminated oilfrom the settling chamber. This will lose about 15-gallons of oil and must be compensated byadding the same amount of oil to the main reservoir.Check once every week. Remove the 2 1/2 plugs below the frame and drain out the accumulated

water. Every shift makes their round of inspection of oil level once and keep the level to the fullposition.In case of oil pressure drop occurs; check the following items:--- Suction filter screen may be blocked--- Oil level may be too low--- V-belt slipped--- Connections or joints may be broken or loosen--- Oil pump may be worn or damaged--- Relief valve may be failedIn case of oil pressure increase occurs; check the following items:--- Oil pass-way may be blocked--- Contaminations may make the oil be viscous--- Relief valve may be inoperative--- Pressure gauge may be defective--- Other abnormal conditions

9.1 Power endRegular inspection of the power end is the most important way to conduct preventive maintenance;it could find various failures in time, small or big and enable the mud pump to be repairedaccording to plan or in the normal shutdown time.a.

Oil pipe-lineCheck all oil pipelines and make sure that they are complete and free of obstructions. Checkthe pump suction pipelines are free of damage.

Teeth of main and pinion gearCheck the condition of the main and pinion gear teeth for any abnormal wear. During therunning-in period there will be some pitting on the face of the gear teeth. This is referred to asinitial pitting and is not harmful to the life of the gears; however, during the regular check ifthe pitting is expanding, immediately contact the pump manufacturer to inspect the gearsthoroughly.

9.2 Roller bearingRoller bearings are used for all HHF series mud- pumps. As very precise mechanical parts, allroller bearings must be carefully maintained to ensure that higher load capacity and longer servicelife to be obtained.

Spherical self-alignment roller bearings are used for crankshaft main bearings. The pinion shaft ismounted on short-column roller bearings. The eccentric bearings are single-row short-column withdetent ring roller type to facilitate removing. The crosshead pin bearings are double-rowlong-column roller type. None of the bearings require special adjustments.All inner and outer rings are assembled and fitted very accurately as the fit clearance of bearingsare very small; therefore, they must be used in sets. If one element of a bearing failed (inner orouter rings, rollers or retainer), it must be replaced in sets. If excessive tolerance clearance, grooveor wear in socket ring and spot corrosion or scaling on parts occur; which indicate that thesebearings are already failed and must be replaced as soon as possible.All roller bearings are assembled to shafts by shrink fit (refer to every bearing assembly for thebearing fit data). Damaged or worn bearing or socket ring can be removed by driving them off theshaft with a copper rod and hammer or by gas cutting but must be very careful dont hurt the shaft.Bearings assembling usually use the way heating in an oil bath; but the temperature should bebelow 300149.

9.6 Installation of crosshead guide9.6.1Clean thoroughly the surfaces of the guide and frame bore used for installation of the guideand remove all burs or rough edges.9.6.2If an old guide is to be reused, check the friction surface for wear and scoring etc. If it is notup to the requirements, replace it.Note: As for HHF 1300/1600-mud pumps, the upper and lower crosshead guides are notinterchangeable. The guides are differently machined so that the lower one places the crosshead on

9.7.1Thoroughly clean all dirt or contaminations and remove all burs or rough edges from OD,pinhole of the crosshead and guide inner bore etc. Wipe and dry crosshead pinhole so that theconnection with the pin taper bore is made up as metal to metal one. See following note.9.7.2 Position the small end of the link at the side hole of the crosshead guides. Support the linkwith a piece of wood so that the crosshead pin can pass through the bore of link small end whilesliding the crosshead into the pinhole at the aligned positions. See Figure 18.9.7.3 Install the left side crosshead first and then rotate the crankshaft assembly to make themiddle link hole into the middle crosshead; at this time the right link hole backs, remove thesplash guard disk (see item1, Figure 19); push the right crosshead to the middle extension rodchamber so that enough clearances are provided for installation of middle crosshead, and theninstall the right crosshead.Note: If an old guide is to be reused, check the wearing surface for wear and scoring etc. Thecrosshead might be installed to opposite side of the pump if necessary i.e. the left and rightcrosshead could be exchange- installed into the bores. However, dont install the pin into the taperhole until the crosshead pin baffle (2) is mounted.9.7.4 Install crosshead pin baffle (2) and bolts (3), (4); align the taper hole of crosshead with thelink small end hole, and push the pin by hand or knock the big end of the pin lightly by a hammerto install the pin into the taper bore. Put the adjusting shims between crosshead pins and baffle(note: as to a set of pin and its hole, the thickness of shims needed are determined and notexchangeable with other shims, otherwise, failures may occur); rotate crosshead pin until the 8bolt- holes on the pin baffle align with the holes below and install 6 bolts (4) and 2 bolts (3)separately and tighten them by hand (refer to Figure 19 and 19A). The oil catcher of crosshead pinbaffle should be upwards.

0.015 (0.381mm), shims should be inserted under the lower guide to make the extension rodmove just towards the aligned center. In the meantime, enough clearance between the upper andlower guides should be ensured; in general, the lower guide is loaded heavily and a bigger force isexerted at the back part since the angle of link, thus the lower guide is fast worn; therefore, it ispermissible to shim the guides a bit skewed to take up the wear..During shimming, the clearance between the upper guide and crosshead upper surface must not beless that 0.020 (0.5mm). Larger clearances are acceptable since the characteristics of triplexpump operation and the crosshead pressure is always exerted on the lower guide when clockwiserotating.Note: When the pump must be driven anti-clockwise the crosshead pressure is exerted on theupper guide, therefore, the guide clearance must be controlled between 0.010.0160.250.40mm.9.8.5 Cut shims being long enough to make them completely pass through the guide; and cut tabson the shim side and exceeding over the frame supports (refer to installation of crosshead guide,9.6.3 and 9.6.4).

manifold must be open. While the valve are closed, the pump starting will exert an impact stress tothe pump and may cause fatigue cracks; and finally the pump head would be damaged by fatiguefailure if the situation continued.9.9.2

Properly maintain the fluid ends for storage. When a pump will not be used for 10 days more, it issuggested to remove the pistons. piston rods, liner etc and flush thoroughly the fluid end withclean water and then wiping them clean after flushing; grease all parts removed and all machinedsurfaces. This will not only extend the life of the fluid end parts but also protects them in goodcondition to be installed when the pump will be operated again.The fluid end assembly for triplex pumps consists of 3 forged fluid cylinder blocks, liner, valvepot cover and cylinder head cover, suction and discharge manifold etc.a.

Procedure--Welding as per the way used for 30 # carbon steel--Before welding, clean area to be welded by grinding or carbon-arc-air-gouging, be sure theelectrodes are dry and free of moisture, and if necessary, put them in an oven to dry beforewelding.-- Spot-heat the welding area, at least for a surrounding 3 (75mm) area, to 250F 350F120C180C.--Use low-hydrogen rod: AWS-ASTM E-60-7018, such as ADAM-Arc7018--Temperature should be dropped down to 250F 350F120C180Cafter onewelding seam was completed and then start welding the second. After all patches werecompleted, heat to

thermal-insulation-cooling.b. Cracks:-- Grind out all cracks. It is not recommended that to remove cracks by torch cutting since itwill cause the cracks to enlarged.--Preheating: the purpose of preheating is to expand the area to be heated so that whencooling, the welded area and the preheated area will cool more uniformly, thus to avoid thermalcracking and prevent the hard spots forming between the base metal and the welding metal;These hard spots are just the places the fatigue cracks will start.The welding procedures for cracks are the same as above-mentioned.

9.11 Repair to valve pot cover boreWhen repairing the valve pot bore damaged by washouts keep the valve pot cover seat completelylevel and 90to the axis of the threads are most important while turning or boring the valve potbores. As shown in the Figure 21, the valve pot seal ring (1) seats into the counter-bore at the topof valve pot and forms metal to metal contacts; the seal ring was sealed in the lower pointmachined by turning or boring, otherwise, a gap will be formed between the end faces of valve potbench and valve pot bore, through which the seal ring will be extruded and damaged underpressure. Any high or low spots could also cause the valve pot to become warped and result inseverely damaging the threads. .

10 Daily maintenances of PumpTo maintain the pump properly is a necessary measure to ensure the pump is working correctlyand extend its service life. Importance should be attached to this key task during operation.10.1 Daily maintenances10.1.1 Shut down the pump and check oil level at power end. Check once each day; if the pump isdriven by chain transmission the oil level in chain reservoir should also be checked. Duringoperation, the lube-oil pressure changes in the system shown on the oil pressure gauge should bechecked.10.1.2 Observe working status of the cylinder liner and piston; if a little bit mud-leakage is foundit is normal, but if mud leaked is excessive the piston needs to be replaced and the cylinder linerwear should also be carefully checked. If excessive wear is found replace the liner.10.1.3 Check the liner cavity of the frame and wash out the accumulated mud10.1.4 Check the cooling water quantity in the spray pump water tank. Replenish and replace thecontaminated cooling water if necessary

10.1.5 Check the charging pressure of discharge dampener up to the requirement specified.10.1.6 Periodically test reset safety valve.10.1.7 Loosen the piston rod clamp everyday and rotate piston about 1/4 turn. and tighten theclamp again. The purpose of this is to move the wear on the piston around and extend the servicelife of piston and cylinder liner.10.1.8 Before tightening cylinder head and valve pot cover, first coat the threads with grease, andthen check the tightness of the bolts once within 4 hours.10.1.9 Observe often the seals of valve pot cover, cylinder liner and leakage hole of cylinder linerseal, replace the seal rings in time and accordingly if mad-leakage was found and flowed out.

10.2 Maintenances every week10.2.1 Remove the valve pot cover, cylinder head once a week, clean them thoroughly, coat withmolybdenum disulfide-complex calcium grease, Check the inner sleeve of valve rod guide, ifworn out obviously ( the clearance between inner sleeve and valve rod guide o.11 (3mm),replace immediately.10.2.2 Check the valves and valve seats and replace those worn. (Note: when replacing a valveseat, the valve should also be replaced.)10.2.3 Check the piston locking nuts and replace if washed or damaged. (After the nuts have beentightened three times they should be replaces as the plastic locking insert is worn out.10.2.4 Drain water from the clean out cover plugs until the oil comes out.

10.4 Maintenances every year10.4.1 Check the tightness of the crosshead guide and running clearance up to the requirements ornot, if not it could be adjusted by adding shims under the guide. If the crankshaft assembly isremoved for any reason it is recommended to rotate the crossheads 180for use again.10.4.2 It is recommended to inspect the pump fully every two or three years; check the wear anddamage status of the main bearings, eccentric bearings, crosshead and pinion bearings. Replacewith new if excessive wear on the old parts