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+--- Thread: Isx Oil pump (/showthread.php?tid=1797)
Isx Oil pump - Mr Chain - 06-01-2017
I have a 871 recently inframed and the oil pump seems to be making a humming noise any suggestions on what it may be? I'm hoping it's only shims
RE: Isx Oil pump - Unilevers - 06-01-2017
probably wrong shim. some had a bad crank gear that had improper clearance in the teeth when it was made.
RE: Isx Oil pump - Mr Chain - 06-02-2017
Ok thanks I'll look into re shimming the pump then
RE: Isx Oil pump - Signature620 - 06-02-2017
Check the backlash on the upper oil pump gear before you remove it. If the lash is ok then the noise is probably a worn shaft inside the pump. Let me know if you need specs.