Rear main bearing seal on V8 100 series was done at 300,000km.
Just had 330,000km service and the seal is leaking slightly.
Would have expected it to last much longer. Towing 3.2t van.
DeBe said
02:51 PM Oct 18, 2018
It may not be the seal, have had leakage from where the bearing cap joins the block. The way to test it is pressurise the crankcase to 5psi where the PVC valve is fitted to the rocker cover & use soapy water to check for bubbles. Picture is just an example of a rear seal.
-- Edited by DeBe on Thursday 18th of October 2018 02:52:51 PM
A common problem with oil seals is they go hard and ware a grove in the shaft. If the grove is worn too deep they will still seep oil after the seal has been replaced.
Joda said
06:05 PM Oct 18, 2018
Replacement seals used to have the sealing lip offset to miss the worn part of the shaft, may not be the norm these days but if you get it changed talk to the people at a bearing service to see what is available.
Service people will only put it an original seal.
A speedy sleeve can be fitted to the crank end also.
Also make sure the seal is a high temperature one.
Maybe a oil stopleak additive is worth a try
patrol03 said
06:25 PM Oct 18, 2018
A speedy sleeve fitted to the shaft and trimmed to length will usually solve the problem and you can still use the standard size seal. Speedy seals come in numerous sizes and used for axle and hub bearing fitting and shaft sealing including worn harmonic balancer seal faces. You just need to be able to measure the offending shaft diameter accurately.
Snippy said
10:42 PM Oct 18, 2018
Either way it looks like I am up for another 8 hours labour at least?
Aus-Kiwi said
10:19 AM Oct 19, 2018
I would try better or improving cankcase ventilation first ? It may have a little blowby
Pushing oil through seal ?
Snippy said
01:02 PM Oct 19, 2018
Thanks for all your replies. As I do not have the mechanical knowledge to try any of these solutions looks like I will be at the mercy of a repair shop.
blaze said
02:10 PM Oct 19, 2018
sounds like the job wasn't done right the first time. I would speak to the orinal mechanic. warranty in my mind. ex mechanic.
cheers
blaze
swamp said
02:26 PM Oct 19, 2018
HI
speedi sleeve if there is a groove
Hi temp seal --use a genuine
Correctly Tension flywheel in a criss cross fashion . failure to do this can distort seal surface .
Is the breathing system --PCV working correctly
Is the breather baffle inside rocker cover correct excess oil usage results and an increase in crankcase pressure can happen
Engine condition compression test
Leak down test
Both the above check for blowby into crank case . Excessive blowby comes out oil seals .
Rear main bearing seal on V8 100 series was done at 300,000km.
Just had 330,000km service and the seal is leaking slightly.
Would have expected it to last much longer. Towing 3.2t van.
-- Edited by DeBe on Thursday 18th of October 2018 02:52:51 PM
cheers
blaze
speedi sleeve if there is a groove
Hi temp seal --use a genuine
Correctly Tension flywheel in a criss cross fashion . failure to do this can distort seal surface .
Is the breathing system --PCV working correctly
Is the breather baffle inside rocker cover correct excess oil usage results and an increase in crankcase pressure can happen
Engine condition compression test
Leak down test
Both the above check for blowby into crank case . Excessive blowby comes out oil seals .