how does a oil pump gear break?? and keyway fall off
#12
ditto on the metal fragment theory. if you pull the cam plate in the future, add the intake screen. also go for the super magnet drain plugs. remember.....on a stock harley...the oil pump protects the oil filter...there is no filtering of oil from the sump to the oil pump...filtering occurs after the pump on the way to the engine parts.
#13
#14
Could be bad luck, could be the builder dropped something into the engine and didn't catch it. Could be the crank shifted, whoever tears it down should be able to come up with a cause of failure. I'm betting the oil pump is what failed first. It's very rare an oil pump gear just breaks, usually something causes the gear to break.
Last edited by msocko3; 02-05-2016 at 05:33 AM.
Thread
Thread Starter
Forum
Replies
Last Post
bigolfunkyo
Engine Mechanical Topics
2
04-26-2015 04:17 PM