oil leak from primary cover

Status
Not open for further replies.
Joined
Nov 15, 2017
Messages
9
Country flag
Hi I have oil leaking from the longer allen bolt which goes through to the starter motor om mk3 seems strange as it is so high on the case any ideas
 
Has the outer case been machine polished? to the extent that the bolt head dosent have a completely flat face to bear against, this will allow oil to seep out from under the bolt head. excessive machine buffing can cause havoc on stuff like this, seal the bolt shank with hylomar, rtv, loctite etc
 
Has the outer case been machine polished? to the extent that the bolt head dosent have a completely flat face to bear against, this will allow oil to seep out from under the bolt head. excessive machine buffing can cause havoc on stuff like this, seal the bolt shank with hylomar, rtv, loctite etc
Thanks the cover has been machine polished I will now seal the bolt
 
I had the same problem and used Permatex Teflon thread sealer on the bolt, it worked fine. Problem went away when I replaced the primary case gasket. I think oil gets picked up in the starter gears and lifted up to the top of the case during normal use, that's why it shows up on the top bolt.
Pete
 
Status
Not open for further replies.
Back
Top