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#3 Sq head M2200 hyd pump crazy loud deassembled all looked good inside

lalatheman

Hot Rolled
Joined
Nov 17, 2002
Location
Western ,Oh ,usa
Hydraulic pump is really really loud on my #3 square head M2200. We took it all apart and everything looked OK inside.....

put back together sounds as bad as ever


Any ideas ?

Thanks,
David Lawrence
 
Last edited:
A worn shaft seal or suction leak (between pump and reservoir) can allow air to be sucked in (air entrainment) or a clogged suction strainer could be starving the pump (cavitation)
 
If you have a suspect area of suction leak try to smear a glob over the area (shaft seal or tubing/hose) and see if the sound changes, it may help to locate a suction leak
 








 
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