Good morning. I've recently purchased an MF40 industrial tractor with loader and backhoe. The original Cessna loader control valve had been replaced by a Hydro-Pack 2P80 before I got this. If I'm understanding the specs and converting to US units correctly, that's a 21 gpm, with max presure of 4351 psi.
The loader lifts ok (haven't really worked it a lot yet), but it was leaking fluid badly at the control valve. I found that both spool end caps were bent and broken in pieces.
I'm trying to figure out what happened and why, how to repair it, and how to prevent it from happening again. I'm fairly new to hydraulics. I do want to do a pressure test on the pump, but I feel like I need to get this put back together first.
Is the spool supposed to be able to drop out the bottom of the block so far (it's at least 1/2" longer than the end cap will allow)? Are the washers supposed to be bent? And can I simply find new seals and caps and put it back together? Are they standard items?
I appreciate any help or tips you all have. Incredible site for knowledge here.
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The loader lifts ok (haven't really worked it a lot yet), but it was leaking fluid badly at the control valve. I found that both spool end caps were bent and broken in pieces.
I'm trying to figure out what happened and why, how to repair it, and how to prevent it from happening again. I'm fairly new to hydraulics. I do want to do a pressure test on the pump, but I feel like I need to get this put back together first.
Is the spool supposed to be able to drop out the bottom of the block so far (it's at least 1/2" longer than the end cap will allow)? Are the washers supposed to be bent? And can I simply find new seals and caps and put it back together? Are they standard items?
I appreciate any help or tips you all have. Incredible site for knowledge here.
[/img:98c721ae17]