overshot loader free sample

2023-05-21 21:22:12

FRONT END AND OVERSHOT LOADER 5 Sheets-Sheet 2 Filed July 6, 1962 FIG 2 S R m N w W ERWIN C. BREKELBAUM ROBERT L. BUSHONG, JOHN F. KRUECK 8 BY EDRED B. WILLIAMS FIG 3 Oberimm gg fim lu 1965 E. c. BREKELBAUM ETAL 3,203,564

FRONT END AND OVERSHOT LOADER 5 Sheets-Sheet 3 Filed July 6, 1962 FIG !2 MGGWM. W m. SB K L H C E SE m K U U M EBm w J? W B L W m FD C T E mmm WwwEm R R E 0 m ATTURNEYS Aug. 31, 1965 E. c. BREKELBAUM ETAL 3,203,564

FRONT END AND OVERSHOT LOADER 5 Sheets-Sheet 5 Filed July 6, 1962 FIG 7 FIG 9 FIG 8 INVENTORS. ERWIN C. BREKELBAUM ROBERT L. BUSHONG JOHN F. KRUECK 8;

Koehring Company, Milwaukee, Win, a corporation of Wisconsin Filed July 6, 1962, Ser. No. 208,041 Claims. "(Cl. 21"4140) This invention relates generally, as indicated, to a front end and overshot loader and more particularly to certain improvements in front end loaders of the type disclosed in the copending application of Bernard A. Kuhl, Serial No. 24,062, filed April 22, 1960, entitled Front End Loader now Patent No. 3,076,571.

In such application, there is disclosed a front end loader having a compact and simplified bucket or scoop lifting assembly obtaining excellent height and reach. The bucket or scoop lifting booms are pivoted to the tractor a substantial distance behind the back rest of the operators seat and steering wheel while still approximately in the middle of the tractor. With the arm geometry disclosed in such application, there is provided a front end loader with excellent front loading capabilities.

However, in certain loading operations, it may be desirable to load either forwardly or rearwardly of the tractor. With conventional front end loaders, it is impossible to load rearwardly of the tractor and, with conventional overshot loaders, it is generally impossible to load effectively forwardly of the tractor due to height and reach limitations.

It is accordingly a principal object of the present invention to provide a tractor-loader of a more highly versatile character which can load both to the front and rear of the tractor and which can obtain greater height and reaches for such selective loading.

it is a further principal object of the present invention to provide an attachment for such front end loaders whereby they can readily be converted into overshot loaders.

A further object is the provision of a special mounting member for the bucket lifting arms of a conventional front end loader which can quickly convert .the same into an overshot loader.

Still another object is the provision of such attachment which can readily immobilize the mounting member when not in use so that the loader may operate in the conventional front loading manner.

A still further object is the provision of a highly versatile front end and overshot loader incorporating all the advantageous features of the front end loader disclosed in said aforementioned copending application.

FIG. 1 is a side elevation of a front end and overshot load-er in accordance with the present invention, the boom and scoop being shown in its lower digging position in full lines and in its initial tilt-back position in dot-dash lines;

FIG. 4 is a side elevational View similar to FIG. 3 showing the extended height that may be obtained in the front loading position with the employment of the overshot loading attachment of the present invention;

Referring now more specifically to the drawings and first to FIG. 1, it will be seen that the front end and overshot loader of the present invention comprises a tractor 1 having front and rear pairs of wheels 2 and 3, respectively, all of which are driven by an engine (not shown) in compartment 4. Generally, the rear pair of wheels 3 are the steering wheels actuated by the steering wheel 5 in the drivers compartment 6 provided near the front end of the tractor 1. Behind the steering wheel 5 is the operators seat 7 which includes the usual visible back rest. Since the loader of the present invention may be employed as an overshot loader in that the loading bucket or scoop will be moved over the top of the drivers compartment, .a roof 8 is provided over the compartment 6 to protect the driver from falling material or the like.

The piston rod 32 of each of the tilt cylinders 31 on each side of the tractor is thus pin-connected to the back of the scoop 14 shown at 35 which is provided with the recesses shown at 36 accommodating such pins 33. A front digging edge 37 may be provided on the scoop and the scoop sides 39 and 40 enclose the ends of the troughshape bottom or back 35 providing the bucket structure. In the illustrated embodiment, the back of the scoop or bucket is shown longer than the bottom or front to facilitate overshot loading as will hereinafter be described.

Referring now to FIGS. 5 and 6, the lower end of the S-shaped intermediate link 28 for each boom assembly is pivotally connected by pin 42 to the distal end of another slightly more shallow S-shape link 43 which has its proximal end pivotally connected by pin 44 to a triangular overshot member 45, also pivotally connected to the side of the tractor by the pivot pin 15 in the embodiment of the invention illustrated in FIGS. 1 through 10. The pivot pin 44 is thus fixed with respect to the overshot member 45. Such S-shape link 43 is preferably of rectangular sectional configuration and may be cut away as indicated at 48 to accommodate cylinder 49 of pistoncylinder assembly 50. Such cylinder is pivoted by means of a trunnion mounting or like 51 between the side plates 18 and 19 within the boom structure 13. The rod 52 of such piston-cylinder assembly is pin-connected as at 53 to the lower pointed end 54 of the triangular overshot mem ber 45. Thus not only are both S-shape links 28 and 43 accommodated substantially entirely within each boom structure 13, but also the hoist piston-cylinder assembly 50. In this manner, a clean lifting arm or boom structure mechanism is provided on each side of the tractor and most of the working parts thereof are protected within the boom side plates.

cylinder assembly 58. The cylinder 59 of such assembly is pivotally mounted by means of a trunnion mounting as indicated at 60 to the side of the tractor 1 just above and inside each of the rear wheels 3. It can now be seen that extension and retraction of the piston rod 57 will cause swinging of the overshot member 45 about the pivot 15, extension rotating the member 45 in a counterclockwise direction as viewed in FIG. 1 and retraction in a clockwise direction. It can now be seen that both the boom structure arms 13 and the overshot members 45 011 each side of the machine are pivoted about the pins 15 and in order more firmly to support such pins at both ends, brackets or the like 61 may be provided secured to each side of the tractor.

With reference to FIGS. 5, 7, 8 and 9, it will be seen that each such bracket may comprise a side mounting plate 62 secured to the tractor frame, a top plate 63 extending inwardly of the tractor and outwardly of the plate 62 having a U-shape outer end portion 64. A back plate 65 extends downwardly from the top plate 63 terminating in horizontal bottom plate 66. Also extending downwardly from the top plate 63 is an outer plate 67 having the planar configuration shown more clearly in FIG. 5 and which is broken away in FIGS. 1, 2 and 4. The back plate 65 is bent as indicated in FIG. 5 and at such bent portion, a central elongated aperture 68 is provided accommodating the piston rod 57 of the overshot cylinder 58. Spaced below the top plate 63 is a further horizontal member 69 having the same configuration as the U-shaped outer portion 64 of the plate 62. Brace plates "70 and 71 may be provided extending between the side plate 62 and the back plate 65. In this manner, the pin 15 will be held firmly supported at both ends and as seen in FIG. 9, a key 72 may be provided welded to such pin 15 and secured to the outer plate 67.

The overshot member 45, as seen in FIG. 9, may comprise two spaced plates and 86 with the top apex of such member having a support collar 81 with bushing 82 therein providing the bearing between the overshot member 45 and the pin 15. A grease fitting or the like 83 may be provided properly to lubricate such bearing. Spacers 85 and 86 also provided with grease fittings may be employed properly to center the overshot member 45 between the side plates 18 and 19 of the boom 13. These spacers are in reality the upper bushings of the boom 13. The pin 44 to which the S-shape link 43 is pivoted extends through a collar 88 with a bushing also being provided. The pivots provided by the pins 53 and 56 comprise bosses 90 in each of the side plates 79 and 80 through which the pins 56 and 53 may extend. Bushings are also provided surroundings such pins interiorly of the ends of the rods 52 and 57.

For normal front end digging and loading, the overshot member 45 may be immobilized as by pin-connecting the same to bracket 61 and the piston-cylinder assembly 58 may actually be removed from the machine. A forwardly extending flange 94 may be provided on the bracket 61 suitably secured thereto as by welding and a pin 95 may be employed thus to lock the overshot member 45 in its immobilized position. For such normal front end loading operation, the operator drives the tractor 1 into the bottom of a pile of material while the boom structures 13 are down and the scoop 14 is in digging position, as shown in full lines in FIG. 1. After the scoop 14 has penetrated the pile of material, the operator actuates an appropriate valve (not shown), fully to retract the tilt cylinders 31 to move the scoop to the dotted line position 34 in FIG. 1 while the tractor 1 continues to move into the pile. At the same time, the operator actuates another valve (not shown) to swing the booms 13 up about the boom pivot by supplying hydraulic fluid from an engine driven pump to the blind ends of hoist piston-cylinder assemblies 50. As the boom structures 13 swing upwardly, the scoop 14 tilts backwardly but not in direct relation to the angle of swing of the booms 13 by reason of the provision of the linkage mechanism shown in detail in FIGS. 5 and 6.

With such linkage, the scoop 14 will be tilted back at a slower rate than the rate of angular movement of the booms 13. As the boom structures 13 are elevated from the FIG. 1 to the FIG. 2 position by the hoist pistoncylinder assemblies 50, the link 43 pivotally fixed to the overshot member at 44 will cause the S-shape intermediate link 28 to pivot in a clockwise direction as viewed in FIGS. 1 and 2 in effect tilting the scoop forwardly as the booms are raised. Thus in the maximum height obtainable by the extension of the piston-cylinder assemblies alone, the scoop is in its maximum load carrying position and when it is desired to dump the contents of the scoop, the operator actuates a valve (not shown) to open the rod end of the tilt cylinder 31 to a vent through large size tubing and, at the same time, to introduce fluid under pressure from such engine driven pump into the blind end of the cylinder, whereby the scoop 14 will be swung clockwise as seen in FIG. 2 about its pivot connection 16 to the distal ends of the boom structures 13. As the scoop 14 swings to its dumping position, a stop 92 on the scoop 14 engages a corresponding stop on the booms, thereby to jar the contents of the scoop for ready sliding therefrom. In this thus obtained FIG. 2 dot-dash line dumping position of the scoop 14, the lip 37 of the scoop may, for example, be three feet from the front peripheries of the forward wheels 2 and approximately ten feet from the ground G (dimension A). It it is necessary to reach further as into a wide body dump truck or railroad car, the booms 13 may be lowered and, of course, as the height A decreases, the reach or distance from the wheels 2 forwardly will increase.

The aforementioned normal front end digging and loading is that which may be accomplished by the machine disclosed in the aforementioned copending application of Bernard A. Kuhl, Serial No. 25,062 entitled Front End Loader, filed April 22, 1960, now Patent No. 3,076,571 and, of course, alone, forms no part of the present invention.

With the improvements of the present invention, it is possible to obtain with such mechanism a greater height for conventional front end loading and, moreover, optional loading both to the front end of the tractor and to the rear end of the tractor, or overshot loading.

With the overshot member 45 free to move and with the overshot piston-cylinder assembly 58 properly connected both to the member 45 and the trunnion mounting and the hydraulic lines thereof connected to the engine driven hydraulic pump through suitable valving, not shown, the operator can then employ such pistoncylinder assembly 58 to obtain both greater height in the front loading operation of the machine and also optionally overshot loading. With the position of the parts in the FIG. 2 position, the operator can then actuate a valve (not shown) to allow fluid under pressure to enter the blind end of the cylinder 59 causing the piston rod 57 to extend pivoting the entire overshot member 45 and the boom structure 13 connected thereto about the axis of the pivot pin 15. In this manner, the operator can move the structure from the FIG. 2 to the FIG. 4 position to increase the front loading height from the dimension A to the dimension B. With the extension of the piston-cylinder assembly 58 in such illustrated embodiment, the loading height at the front end of the vehicle can be extended approximately four feet.

If it is desired to load at the rear of the machine, the tilt cylinders 31 will be maintained substantially in their retracted position and further extension of the rod 57 will cause the overshot member 45 to swing to the FIG. 3 position and with the hoist piston-cylinder assemblies 50 maintained in their extended position, the boom structures 13 will pivot over the top of the machine to the overshot loading position shown. As the pistoncylinder assembly 58 moves the overshot member through its swinging stroke about the pivot 15, the operator can actuate the valving (no-t shown) controlling the tilt cylinder assemblies 31 to maintain the scoop 14 in a substantially level maximum load carrying position as the scoop moves over the top of the machine. When in the FIG. 3 position, the operator may then retract the tilt cylinder assemblies 31 causing the scoop to tilt to the full line position shown dumping the material from the back lip 93 of the scoop 14. A mechanical stop similar to stop 92 may be provided on the scoop 14 as shown in FIG. 6 to relieve shock loads on the tilt cylinder assemblies 31 and the S-shape links mounting the blind ends thereof. With the configuration of the scoop illustrated, it is possible to obtain greater reach by not retracting the tilt cylinder assemblies 31 to the maximum extent especially when handling loose materials such as sand, gravel, sugar beets, or the like.

Although in overshot loading, the hoist piston-cylinder assembly 50 will normally be actuated first to elevate the booms to the FIG. 2 position and then the piston-cylinder assemblies 58 will be actuated to swing the booms and the load over the top of the tractor, it will be understood that a skillful operator will be able to actuate both piston-cylinder assemblies 50 and 58 simultaneously to a certain extent. When returning the bucket or scoop to its digging position, both piston-cylinder assemblies 50 and 58 may be actuated simultaneously.

When the boom and scoop are in the overshot loading position as seen in FIG. 3, it will be noted that the center of gravity of the scoop and boom lifting structures is still well within the wheel base of the tractor. This is, of course, true in both the front loading position of FIG. 2 and in the overshot loading position of FIG. 3 primarily because the boom pivot 15 is substantially between the pairs of wheels 2 and 3 and in the middle of the tractor. Moreover, with the pivot near the top of the tractor, the length of the boom structure from the proximal pivot 15 to the distal pivot 16 need not be as great to obtain the desired height and reach requirements for both front and overshot loading.

It can now be seen that there is provided a highly versatile loader wherein the boom structures are pivoted both to the machine frame and to the overshot mounting member so that the boom structures may be swung bodily by the movement of such member over the top of the machine to an overshot loading position. In this manner, the overshot cylinder assemblies 58 can pivot bodily the triangular linkage provided by the pivots 15, 53 and 51, with the pivot connection 53, 51 being lengthened also to lift the booms. During such lengthening, the link 43, which is pivoted at 44 to the overshot member 45, maintains the scoop 14 in its level position causing an automatic self-leveling of the scoop during the initial elevation of the boom structures. If it is desired not to operate the mechanism as an overshot loader, the overshot member may be immobilized and the overshot cylinder assembly 58 may then be removed. However, the overshot cylinder assembly 58 in its static condition will, of course, serve the same function maintaining the member 45 in its position fixed with respect to the pivot 15.

The overshot member 96 will, however, be of a slightly different configuration in that it is provided with a top offset pivot to the bracket 97 indicated at 98 with the boom structures 13 being pivoted to the top of the overshot member 96 as indicated at 99. In this manner, as the overshot member is swung by the overshot cylinder assemblies 58, the boom structures will pivot bodily about the pivot 98 instead of the pivot 99. The overshot member 96 will be substantially the same as the overshot member 45 with the exception of the additional rearwardly offset pivot 93 securing the same to the bracket 97 and thus the tractor 1. When the hoist cylinders 50 are actuated, the booms 13 will initially be pivoted about the pivots 99 to the front loading position. Then, in-

ead of continuing about the same pivot as in the FIGS. 1 through 10 embodiment, the boom structures will then be pivoted about the rearwardly otfest pivot 98 to the overshot loading position seen in FIG. 12. Thus the scoop pivot 16, for example, will move initially along an arc described from the pivot 99 and then along an are described from pivot 98. It can now be seen that the scoop will move rearwardly and upwardly an increased distance equal to the distance between such pivots 98 and 99. In this manner, the overshot cylinder 58 pivots bodily the quadrilateral linkage provided by the pivots 51, 53, 98 and 99 again with the pivot connection 53, 51 being lengthened initially to lift the booms to front load ing position. The mounting bracket for the overshot members 96 is shown partially broken away in FIGS. 11 and 12 better to illustrate the configuration of the overshot member 96.

It is then apparent that there is provided a loader having all the advantages of the front end loader disclosed in the aforementioned copending Kuhl application and additionally having a highly versatile loading feature obtaining more height in the front loading condition and an optional overshot loading.

1. In a loader comprising a mobile tractor having ground-engaging propelling means and a forwardly facing operators seat from which the operator may control the movements of said tractor, and a forwardly extending material handling assembly and actuating means therefor pivotally mounted on said tractor for swinging in a vertical plane from a lower material pick-up position to an upper hoist and dump position, said assembly comprising a pair of hollow booms having rear portions which are pivotally connected to the respective sides of said tractor, rearward of said seat and which, when said booms are in such lower position, extend downwardly and forwardly from such boom pivot, said booms also having front portions disposed forwardly of the front end of said tractor and close to the ground when said booms are in such lower position, a material handling scoop pivotally connected to the front ends of said booms for tilting movements about a horizontal axis for scooping material therein and for dumping such material therefrom, and a three part linkage associated with each boom for tilting said scoop to different angular positions with respect thereto, said linkage comprising a first link disposed substantially in its entirety within said boom and pivotally connected at one end to a point below the boom-tractor pivot, an intermediate link pivotally connected between its ends to an intermediate portion of said boom, and a third variable length link pivotally connected at its respective ends to said intermediate link and said scoop in radially spaced relation to the boomscoop pivot effective to tilt said scoop to different angular positions relative to said boom in response to change in length of said third link, the other ends of said first and intermediate links being pivotally connected together, the pivot connections of said booms of said first link and of said intermediate link to said boom and to said first link defining the corners of an articulated quadrangle which changes the angular position of said scoop with respect to the boom as the latter is swung about the boom pivot; a hoist cylinder connected in operative association with each boom to swing said assembly as afore said, said cylinder having one end pivotally connected below the boom and first link pivotal connections and extending generally horizontally into said boom, when the latter is such lower position, and having an intermediate portion pivotally connected to said boom to swing the latter upwardly when said cylinder is extended; an overshot member pivotally connected to said tractor, said boom, said first link and said one end of said cylinder being pivotally connected to said overshot member, said pivotal connection for said first link being located on said overshot member at a point below said boom pivotal connection as aforesaid, and said pivotal connection for said cylinder being located on said overshot member at a point below said boom and first link pivotal connections as aforesaid, and means operative to swing said overshot member and thus said booms, cylinders, and three part linkages pivotally connected thereto about said member-tractor pivot to move said scoop to an overshot loading position when said hoist cylinder is thus extended 2. A loader as set forth in claim 1 including means operative to immobilize said overshot mounting plate with respect to said tractor, said means comprising a flange means secured to said tractor and extending parallel to said overshot member, and pin means adapted to be inserted through apertures in said flange means and said overshot member when said apertures are brought into algnment, said pin means when so disposed locking said overshot member in such immobilized position.

3. In a boom and scoop assembly for a loader comprising a pair of hollow generally S-shape booms, which, in their lower material pick-up position, extend downwardly and forwardly from their upper ends and extend forwardly and downwardly toward their lower ends, an overshot member to which the upper ends of said booms are pivotally connected for swinging in vertical planes from such lower position to an upper hoist and dump position, a scoop pivotally connected to the front ends of said booms for tilting movement to different angular positions with respect to said boom to scoop material therein, to hoist such material responsive to upward swinging of the front ends of said booms, and to dump such material therefrom, and a pair of link assemblies extending from pivot points on said overshot member through the respective booms to pivot points on said scoop radially spaced from the respective boom-scoop pivots, said link assemblies including first links of generally S-shape form extending substantially longitudinally within said booms curving downwardly and forwardly from pivotal connections at their upper ends with said member and thence curving downwardly and forwardly toward their lower ends, second links having lower ends pivotally connected to the lower ends of the respective first links and having intermediate portions pivotally connected intermediate the ends of the respective booms, and third variable length links having their ends pivotally connected to the upper ends of the respective second links and to said scoop as aforesaid operative when increased in length to tilt said scoop, the pivotal connections of said booms and first links with said overshot member, of said second links with said booms, and of said first and second links with each other defining the corners of articulated quadrangles effective to tilt said scoop with respect to said booms as the latter are swung upwardly from such lower position to an upper hoist position from which the material therein may be dumped by extending said third link, and means operative to pivot said overshot member and thus said booms, cylinders, and link assemblies pivotally connected thereto for further swinging of said booms to an overshot loading position from which the material within the scoop may be dumped by retracting said third links.

4. The boom and scoop assembly as set forth in claim 3 including a hoist piston-cylinder having the piston end pivotally connected to said overshot member and the cylinder end pivotally connected to said booms, said hoist piston-cylinder being operative to swing said booms upwardly from such lower position to said upper hoist position from which the material within said scoop may be dumped by extending said third links.

5. An overshot loader comprising a tractor having front and rear pairs of wheels, a pair of booms pivoted to the sides of said tractor substantially intermediate said pairs of wheels, a material handling scoop pivotally connected to the distal ends of said booms, an overshot mounting member also pivotally connected to the side of said tractor, said overshot mounting member and said booms being coaxially pivotally connected to said tractor, hoist means pivotally interconnecting the lower end of said member and said booms for hoisting said scoop to a front loading position, and means operative to pivot said member when said booms are in such front loading position to swing the scoop backwardly over said tractor to an overshot loading position.

6. A loader comprising a tractor, ground-engaging means supporting said tractor for mobility on each side thereof, a pair of booms pivotally connected to the sides of said tractor substantially in the middle and adjacent the top of said tractor, a material handling scoop pivotally connected to the distal ends of said booms, an overshot mounting member pivoted to each side of said tractor, said overshot mounting members and booms being coaxially pivotally connected to said tractor, hoist piston cylinder assemblies pivotally connected to said booms and members operative to swing said booms upwardly to a front loading position, and means operative optionally to swing said booms over the top of said tractor to an overshot loading position.

7. An overshot loader comprising a tractor having front and rear pairs of wheels, a pair of booms pivoted to the sides of said tractor substantially intermediate said pairs of wheels, a material handling scoop pivotally connected to the distal ends of said booms, an overshot mounting member also pivotally connected to the side of said tractor, hoist means pivotally interconnecting the lower end of said member and said booms for hoisting said scoop to a front loading position, means operative to pivot said member when said booms are in such front loading position to swing the scoop backwardly over said tractor to an overshot loading position, and means to immobilize said overshot mounting member with respect to said tractor, said means comprising a flange means secured to said tractor and extending parallel to said overshot member, and pin means adapted to be inserted through apertures in said flange means and said overshot member when said apertures are brought into alignment, said pin means when so disposed locking said overshot member in such immobilized position as aforesaid.

8. An overshot loader comprising a tractor having front and rear pairs of wheels, a pair of booms pivoted to the sides of said tractor substantially intermediate said pairs of wheels, a material handling scoop pivotally connected to the distal ends of said booms, an overshot mounting member also pivotally connected to the side of said tractor, hoist means pivotally interconnecting the lower end of said member and said booms for hoisting said scoop to a front loading position, and means operative to pivot said member when said booms are in such front loading position to swing the scoop backwardly over said tractor to an overshot loading position, said booms being pivotally connected to said overshot mounting member, said member-tractor pivot being rearwardly offset from said boom-member pivot, thus increasing the distance that said scoop moves upwardly and rearwardly during pivotal movement of said overshot mounting member as aforesaid.

9. A loader comprising a tractor, ground-engaging means supporting said tractor for mobility on each side thereof, a pair of booms pivotally connected to the sides of said tractor substantially in the middle and adjacent the top of said tractor, a material handling scoop pivotally connected to the distal ends of said booms, an overshot mounting member pivoted to each side of said tractor, hoist piston-cylinder assemblies pivotally connected to said booms and members operative to swing said booms upwardly to a front loading position, and means operative optionally to swing said booms over the top of said tractor to an overshot loading position, said booms being pivotally connected to said member, said member-tractor pivot being rearwardly offset from said boom-member pivot, thus increasing the distance that said scoop moves upwardly and rearwardly during pivotal movement of said overshot mounting member as aforesaid.

1%. An overshot loader comprising a tractor, a pair of ground-engaging Wheels supporting said tractor for mobility at opposite ends thereof, an overshot member pivotally connected to said tractor on each side and adjacent the top thereof, a pair of booms pivotally connected to said overshot members on each side of said tractor at a point substantially intermediate said pair of wheels, a material handling scoop pivotally connected to the distal ends of said booms, means interconnecting said members and booms operative to swing said booms upwardly to a front loading position, means responsive to such upward swinging of said booms to maintain said scoop in a load maintaining condition, and means interconnecting said members and tractor operative to swing said booms and scoop over the top of said tractor to a rear loading position, said overshot members being pivoted to said tractor slightly horizontally offset from the pivotal connections of said booms to said overshot members, whereby said scoop is adapted to be raised upwardly an increased distance equal to the distance between said boom and overshot member pivots during swinging movement of said overshot members.

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John Deere backhoe loaders are available in different machine configurations based on the various markets into which they are sold... Different supporting manuals exist for different machine configurations...

When necessary, product identification numbers are listed on the front covers of backhoe loader manuals... These numbers are used to identify the correct supporting manual for your machine...

The product identification number (PIN) plate (1) is located on left side of machine on the loader frame... Each machine has a 17-character PIN (2) shown on PIN plate...

ControlsIf Equipped ... 2-1-11 RadioIf Equipped ... 2-1-13 Backhoe Controls ... 2-1-15 Pilot Enable SwitchIf Equipped... 2-1-17 Loader ControlsTwo-Function

MaintenancePeriodic Maintenance Service Machine at Specified Intervals... 3-2-1 Check Hour Meter Regularly ... 3-2-1 Prepare Machine for Maintenance ... 3-2-2 Fuel Tank... 3-2-2 Loader Boom Service Lock ... 3-2-3 Opening and Closing Engine Hood ... 3-2-4 Battery DisconnectIf Equipped... 3-2-4 Fluid Analysis Program Test Kits and

MaintenanceEvery 10 Hours or Daily Check Engine Coolant Level ... 3-4-1 Check Hydraulic System Oil Level ... 3-4-2 Check Engine Oil Level ... 3-4-3 Lubricate Loader Pivots... 3-4-4 Lubricate Loader Quick CouplerIf Equipped ... 3-4-5 Lubricate Front Axle Pivot Pin ... 3-4-5 Lubricate Stabilizer Pivots and Cylinder Pins ... 3-4-5 Lubricate Backhoe Boom, Crowd

MiscellaneousMachine Changing Loader Buckets ... 4-1-1 Check and Adjust Backhoe Boom Lock ... 4-1-2 Air Conditioning System ServiceIf Equipped ... 4-1-2 Checking Coolant Hoses and Radiator ... 4-1-3 Replace Coolant Filter ... 4-1-4 Drain Diesel Exhaust Fluid (DEF) Tank... 4-1-6 Checking Ride Control AccumulatorIf

Hydraulic PressureIf Equipped ... 4-1-10 Inspect Loader Boom Service Lock... 4-1-11 Installing Teeth on Backhoe Bucket... 4-1-12 Replacing Bucket TeethFlex Pin ... 4-1-13 Replacing Bucket TeethTK Series ... 4-1-14 Lowering Boom Without Electrical

Specifications ... 4-6-1 410L Backhoe Loader Engine Specifications... 4-6-2 310SL HL Travel Speeds ... 4-6-3 410L Travel Speeds ... 4-6-3 310SL HL and 410L Backhoe Loader

Drain and Refill Capacities... 4-6-4 310SL HL Backhoe Loader Dimensions... 4-6-5 410L Backhoe Loader Dimensions... 4-6-9 310SL HL Backhoe Loader Weight ... 4-6-12 410L Backhoe Loader Weight ... 4-6-13 310SL HL and 410L Buckets... 4-6-13 310SL HL Backhoe Loader Lifting

Use Special Care When Operating Never use the loader to lift people... Do not allow anyone to ride in the bucket or use the bucket as a work platform...

Do not support machine with any hydraulically actuated tools or attachments... Do not support machine with cinder blocks or wooden pieces that may crumble or crush... Do not support machine with a single jack or other devices that may slip out of place... Always install boom lock before working on or around this machine with the loader boom raised... Park machine on a level surface and lower equipment to the ground... Engage park brake... Stop engine... Attach a Do Not Operate tag in an obvious place in the operator"s station...

3Loader Coupler Switch (if equipped): Press and hold switch for 1 second (LED illuminated) to enable installation of attachments... Press switch again to disable installation of attachments (LED is off)...

Press and release switch to enable loader auxiliary... Previously enabled mode will be activated... Press and release switch to disable loader auxiliary... When loader auxiliary is enabled, press and hold switch for more than 2 seconds to change between proportional and continuous modes...

Rotate seat to backhoe operating position (right LED illuminated) to enable hydraulic backhoe coupler function... Rotate seat to loader operating position (left LED illuminated) to enable hydraulic loader coupler function...

Engine speed changes when turning the knob while seat is in loader position... Engine speed changes when turning the knob while seat is in the backhoe position... Engine speed changes when turning the knob while seat is not in backhoe or loader position... Engine speed does not change when turning the knob while service brake pedal is pressed in either backhoe or loader position... Engine speed is dialed up to something other than idle and seat position changes, causing the engine speed to drop out...

Loader ControlsTwo-Function Loader Hydraulics, Single Lever Single lever loader control with electric clutch disconnect and momentary mechanical front wheel drive (MFWD)...

Loader ControlsThree-Function Loader Hydraulics, Single LeverIf Equipped Single lever loader control with electric clutch disconnect, momentary mechanical front wheel drive (MFWD), and electrohydraulic (EH) auxiliary control...

Ride control must not be enabled when operating the loader or backhoe... If ride control is enabled, the front end of the machine will not remain raised if lifted off the ground with the front loader... The front end of the machine will drift back to the ground...

Discharge hydraulic pressure from the ride control system before performing maintenance... To discharge ride control accumulator energy, press and release engine start switch (left light-emitting diode [LED] illuminated)... Press ride control switch (1) ON (left LED illuminated) to activate ride control and move loader control lever to float position... See Discharge Ride Control System Hydraulic PressureIf Equipped... (Section 4-1... )

When enabled, this feature provides a limit to the maximum engine speed when in backhoe operation mode and a different limit when in loader operation mode...

When in backhoe operation mode, maximum engine speed will be limited to 2000 rpm... When in loader operation mode: - Engine speed will be limited to 2100 rpm when in first or second gear...

CAUTION: Prevent possible injury from unexpected machine movement... Stabilizers must be set on a firm surface... Do not dig under stabilizers... Be alert to possible machine movement when raising stabilizers and loader bucket...

IMPORTANT: Do not raise or lower the front loader boom while the engine hood is open... Always close the engine hood fully before moving the front loader boom or severe damage to the engine hood will occur... See Opening and Closing Engine Hood... (Section 3-2... )

NOTE: Loader control lever will detent in return-to-dig when bucket is dumped and lever is moved fully left... Lever will return to neutral when bucket is in dig position...

Loader control lever will give resistance when boom is raised and lever is held in bucket roll-back... Lever will return to neutral when bucket is self-leveled...

Use the float and return-to-dig detents at the same time to quickly position the front loader bucket for loading, as when driving into a pile of material... When front loader boom and bucket are in correct position, the loader control lever will automatically release from return-to-dig detent, but will remain in float detent...

Loader Clutch Disconnect Operation Press clutch disconnect switch (1) on control lever to disconnect clutch and provide additional power to lift loader bucket if needed...

Loader Auxiliary Hydraulic OperationIf Equipped The loader auxiliary hydraulic flow feature controls hydraulics for loader attachments that use continuous hydraulic flow... The loader auxiliary hydraulic flow speed can be adjusted through the standard display monitor (SDM) to slow, medium, or fast... To change setting, see SetupHydraulics... (Section 2-3... )

Loader auxiliary hydraulic flow has three modes of operation: off, proportional, and continuous... The loader auxiliary switch (1) controls which mode is enabled...

Pressing and releasing loader auxiliary switch cycles between OFF and last mode machine was previously in... Pressing and holding loader auxiliary switch for 2 seconds cycles between PROPORTIONAL and CONTINUOUS modes... Loader auxiliary hydraulic mode will cycle to OFF when engine is shutdown...

Enable proportional mode (left LED illuminates)... Oil flow is proportional to the position of the roller on the loader auxiliary flow control switch (2), relative to neutral... Neutral is considered the centered (no flow) position of the loader auxiliary flow control switch... Slight switch movements in either forward or reverse direction delivers minimum oil flow... Oil flow increases as the switch is moved further away from neutral... Maximum oil flow is delivered when the switch reaches the end of the forward or reverse direction on the roller switch... Oil flow stops when the roller returns to neutral or the auxiliary hydraulic switch on the SSM is cycled to off...

Enable continuous mode (right LED illuminates)... Full oil flow is continuously delivered in either forward or reverse direction on the loader auxiliary flow control switch... Move roller switch in either direction for continuous (full flow) oil delivery to an attached device... Oil flow stops when the roller switch is moved in the opposite direction or the auxiliary hydraulic switch on the SSM is cycled to off... After stopping oil flow, the roller must return to neutral position before oil flow can be commanded again in either forward

CAUTION: Prevent possible injury from unexpected machine motion... The attachment could fall if not properly installed to loader coupler... Operator must be aware of all bystanders at the worksite...

3... Press and release loader coupler switch (1) (LED illuminates) on sealed switch module (SSM) for 1 second to enable installation of attachments (retract coupler pins)...

8... Raise boom... Visually inspect attachment to verify that loader coupler pin plate (2) is pressed against the loader coupler structure (3) and that the pins are engaged in attachment mounting holes...

CAUTION: Prevent possible injury from unexpected machine motion... The attachment could fall if not properly installed to loader coupler... Operator must be aware of all bystanders at the worksite...

NOTE: If seat position is unknown or audible alarm malfunctions and does not sound, loader coupler will not function... See an authorized John Deere dealer...

4... Raise boom... Visually inspect attachment to verify that loader coupler pin plate is pressed against the loader coupler structure and that the pins are engaged in attachment mounting holes...

loader boom fully to the ground, and move control levers to release hydraulic pressure before working near front of machine... See Loader Boom Service Lock in this section for installation instructions...

Raise the front loader boom and install the loader boom service lock before performing maintenance in the engine compartment... See Loader Boom Service Lock in this section...

IMPORTANT: Do not raise or lower front loader boom while the engine hood is open... Always close engine hood fully before moving front loader boom, or severe damage to engine hood will occur...

CAUTION: Prevent serious injury or death from unexpected machine movement... Always install the loader boom service lock, or lower the front loader boom fully to the ground, and move control levers to release hydraulic pressure before working near the front of the machine...

IMPORTANT: Do not raise or lower front loader boom while the engine hood is open... Always close engine hood fully before moving front loader boom, or severe damage to engine hood will occur...

NOTE: The engine hood can be partially opened when the front loader boom is lowered fully to the ground... To fully open the engine hood, the front loader boom must be fully raised and the loader boom service lock must be installed... See Loader Boom Service Lock in this section for installation instructions...

1... Park machine on level surface... Raise front loader boom and install loader boom service lock... See Loader Boom Service Lock... (Section 3-2... )

CAUTION: Prevent serious injury or death from unexpected machine movement... Always install the loader boom service lock, or lower the front loader boom fully to the ground... Move control levers to release hydraulic pressure before working near the front of the machine...

Check Hydraulic System Oil Level The most accurate oil level reading is obtained before starting engine when oil is at ambient temperature... Machine needs to be parked on a level surface with backhoe and stabilizers in transport position and front loader bucket lowered to ground...

Lubricate Mechanical Front Wheel Drive (MFWD) Axle and Universal JointsIf Equipped Park machine on level surface and lower front loader boom to ground...

1... Park machine on level surface... Raise front loader boom and install loader boom service lock... See Loader Boom Service Lock... (Section 3-2... )

1Single Lever Loader Control With Auxiliary 2Momentary Mechanical Front Wheel Drive (MFWD) Switch 3Transmission Quick Shift Switch 4Clutch Disconnect Switch 5Auxiliary Hydraulic Proportional Loader Switch Fasten seat belt... Lock operators seat in loader position...

CAUTION: Prevent possible injury from unexpected boom or bucket movement when equipped with ride control... Ride control must not be enabled when operating the loader... If ride control is enabled, the front end of the machine will not remain raised if lifted off the ground with the front loader...

Press coupler switch on the sealed switch module (SSM) and hold until chime sounds and standard display monitor (SDM) displays LOADER COUPLER DISENGAGED...

Lifting capacity ratings are made with bucket hinge pin, loader bucket, stabilizers, and tires on firm, level ground... Lift capacities are stability limited... Lifting capacities are 87 percent of the maximum lift, that do not exceed 75 percent of the tipping load, measured at hinge pin of the bucket... Angle between boom and ground is 60 degrees... Machine is equipped with 610 mm (24 in) standard bucket, standard or extendable dipperstick, and standard equipment...

Lifting capacity ratings are made with bucket hinge pin, loader bucket, stabilizers, and tires on firm, level ground... Lift capacities are stability limited... Lifting capacities are 87 percent of the maximum lift, that do not exceed 75 percent of the tipping load, measured at hinge pin of the bucket... Angle between boom and ground is 65 degrees... Machine is equipped with 610 mm (24 in... ) standard bucket, extendable dipperstick, and standard equipment...

Controls Backhoe... 2-1-15 Loader... 2-1-17, 2-1-18 Single lever, three function... 2-1-18 Single lever, two-function... 2-1-17 Steering wheel tilt lever... 2-1-21

Operation qualification... 1-2-3 Operational check Battery... 4-2-2 Battery disconnect switch ... 4-2-4 Beacon... 4-2-10 Blower function ... 4-2-12 Brake light switch ... 4-2-10 Cab door ... 4-2-1 Check periodic maintenance decal ... 4-2-1 Dome light... 4-2-5 Front wiper and washer circuit ... 4-2-6 Front work light ... 4-2-8 Hazard ... 4-2-11 Horn ... 4-2-2 Hour meter ... 4-2-2 Loader boom lock ... 4-2-13 Rear wiper and washer circuit... 4-2-7 Rear work light ... 4-2-9 Seat belt... 4-2-2 Seat control... 4-2-3 Service brake pedal stop ... 4-2-3 Turn signals ... 4-2-10

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