Re: oil pump rebuild questions

Posted by Owen_Dyneto On 2010/12/13 11:44:35

I can't say I've looked at hundred of these, but certainly dozens. The piston looks completely serviceable as is to me though as PackardV8 suggests a look at the bore is adviseable. Excepting the V8 pumps, oil pumps tend to show little wear as they spend their entire lives with lots of lubrication, assuming no neglect. Checking the gear tooth to housing clearance is of course important, as is the clearance between the end gear faces and the housing cover.

If you decide to clean the bore as PackardV8 suggests, clean the living heck out of it, any residual abrasive is going to circulate everywhere with obvious consequences.

PS - any remember that any oil that gets past the piston may reduce the volume available for engine lubrication so I'd really not want to do anything that increases the clearances. If the bore is really bad (highly unlikely) think about another pump body, or having it sleeved.