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Oil Pump

2522 Views 5 Replies 4 Participants Last post by  flitecontrol
Alright, I said I would post some pics of the tear down of the engine. So here is what I found. :(Oil pump seized due to FOD from oil drain plug filter. The oil plug bolt was stripped and I couldn't get it opened. I did take it to a dealer and I thought they had replaced it but I was wrong:confused:. So, the washer came out, was broken up into several smaller pieces, and a couple of those peices made it into the oil pump and seized it. During that process the external gear shift mechanism was bent and the oil pump chain guide was bent as well. My only question is the crankcase has some damage where the oil pump sits, any suggestions on buffing it out?

Also, since I've got the engine torn apart, any suggestions for replacements parts, upgrades, etc. that I may as well change. The bike has over 100K on it. Its a 1989 VN750.

Also, any good threads on putting this back together or just follow manuals?
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There is an internal shifter rod that wasn't designed properly on the first few model years. According to lance, it will eventually fail (although you'd think it would have already done so on a bike like yours with so many miles). The rod was modified in the later models and is much stronger. I'm not sure when they began installing the heavier rod, but believe it was after 1989.
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