drilling mud pump broken bolts free sample

There are many different methods for freeing stuck parts including drilling, grinding or cutting the part. In these examples, there are risks. For example, the part to be loosened may be damaged or destroyed beyond repair, requiring replacement (if, that is, a replacement part can be found in time or at all). Drilling, grinding and cutting also present potential physical hazards to personnel and the surrounding equipment.

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Maybe hit it a couple times with a hammer and punch to loosen it before drilling and the PB blaster. May not need the heat if you can jar it with the punch.

I would also purchase new bolts and inspect the threads. You may need to re-chase them. Also make sure you torque the bolts down to specs.[/quote]What do you mean remove the pump? I can remove the other 5 bolts, but how can I remove the pump with a bolt that still stuck in there?

Most water pumps are held in by the bolt head, with no threads in the pump portion. So, unless your pump is different I think you have a pretty good chance of removing the pump by just pulling it straight off after the 5 other bolts are removed. If you are lucky there will be some bolt length proud of the surface of the engine, and then you can use a bolt extractor to remove the bolt. For a video showing how that little tool works you can watch Duane from realfixesrealfast for an example of how that bolt extractor works, starting at 1:15 of this video.

Based on the picture, it looks like once you remove the 5 bolts, you should be able to remove the broken bolt either by turning it by hand or with some pliers or vise grips.

Most water pumps are held in by the bolt head, with no threads in the pump portion. [/quote]thank you very much. i never thought of that. i’ll give it a try tomorrow.

See if you can take out all other bolt and take out the water pump. You may not like this answer – but if it does not comes out, use brute force – get air hammer in there and split the bolt hole frame from the water pump – this will trash the water pump – but hey buy another one. they are not that expensive. Either way, as soon as the pump is out you should be able to grab using a vise grip to take out the rest of the bolt.

Thank you all the advice. Luckily it worked. Water pump came out nicely. I’m going to try to remove the rest of broken bolt with a vise grip tonight. Main concern right now is how to re-thread the hole. Also one of the other bolt was bent, so I took a toothpick and felt inside the hole and it was definitely not straight. I think I’ve done enough harm. Time to call a real mechanic.