3 replies to this topic

[moh_diesel]

In reciprocating compressor (Dresser-Rand) model HHE-VG, My problem is the hydraulic crosshead jam nut has o-ring failure so it cannot dismantle it by hydraulic pressure andwhat are the precedures to solve this problem and thanks for your help.

[chimistul]

In reciprocating compressor (Dresser-Rand) model HHE-VG, My problem is the hydraulic crosshead jam nut has o-ring failure so it cannot dismantle it by hydraulic pressure andwhat are the precedures to solve this problem and thanks for your help.

Try heating. It should work.

[Art Montemayor]

Jason:

Thank you very much for this very useful and practical information! Our members can profit by making a copy of this information and keeping it in their files for future reference whenever they come across this type of problem.

I resisted replying to this query back in October because I didn't want anyone to do what I have had to do in two previous ocasions in the past (a very long time ago): use a pipe wrench on the piston rod.

I also would not resort to heating the nut. This can have hazardous metal stress problems. I have resorted to using a pipe wrench because I simply ran out of options and had to get my reciprocating compressors back on stream. This was back in the 1960's. I would not resort to doing this again - but if push came to shove, I would do that instead of heating the nut with a heating torch.

The tool you have revealed to us saves a lot of grief and eliminates a lot of safety hazards.

Thanks again.