Engine Oil pressure wont push out the seal as the crankshaft rear main bearing journal & the rear seal are not on the same plain, but crankcase pressure from blow by etc Will push out the seal ..
Engine Oil pressure wont push out the seal as the crankshaft rear main bearing journal & the rear seal are not on the same plain, but crankcase pressure from blow by etc Will push out the seal ..
i do rear mains everyday. i use assembly lube on the outside of the seal to get it in easier. i use excessive o-ring and seal lube on the inside of the seal.
most common causes of failure is not enough lube on the inside or putting the seal exactly where the previous seal was. usually you get a worn mark on the crank from the last seal. push the seal further in or not as far in to avoid the mark.
that all said, the last 4a rear main i installed leaked like crazy. replaced the seal using the same method but didnt push the seal as far in. still leaked like crazy. couldnt be bothered to do it again and after a week it stopped leaking. i used toyota genuine seals.
Originally Posted by ae86
Hmm interesting, this was an epic leak though, I have an oil trail that goes up and down my street twice, into my driveway and also faintly extends to the local caltex.....
Don't think its an oil pressure issue as pump is a brand new genuine unit... Crank was polished so old seating from previous seal is prob not a huge concern, I will re install without lube and push it in a extra mil or 2 and see what happens
------------------>>>Need something welded locally??? Hit me up, I may just be able to help<<<------------------
BENT MECHANIX - Garage 20:
Don't re-use the seal that is leaking though .. Replace it
that's a given
------------------>>>Need something welded locally??? Hit me up, I may just be able to help<<<------------------
BENT MECHANIX - Garage 20:
Bit of bad luck! Check that the metal face is smooth too.
never use lube on the outside, and if the car has a issue(blow by etcetc) ill glue the seal in with loctite
last bigport i pulled out of my ke70, when i pulled the flywheel off the seal fell on the floor(huge amounts of blow by) know exactly when it came out too
Last edited by lolwat; 14th August 2013 at 11:07 PM.
Loctite ay, which one? would using a small amount of permatec grey on the outer edge be a bad idea? (only because I have it)
------------------>>>Need something welded locally??? Hit me up, I may just be able to help<<<------------------
BENT MECHANIX - Garage 20:
there is a specific one for it from memory, perm grey will do the job
basically what ever we have had at work or at workshop
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