Replacing Rear Main Oil Seal On 6.5L non Turbo

[WhoMe08721]

Hey Guys,

My rear main oil seal on my 6.5L non turbo is starting to leak. First off has any one replaced one before and is there a write up on this subject? After doing some research in TM manuals. It looks like you have to disassemble johnny 5 to the core and pull out the crankshaft this seems like a lot of work, Is this true or can you just drop the transmission, pull the flywheel and replace the seal.

 

[Mogman]

You do not need to dissemble the engine to replace the rear seal on a 6.5L, have you followed the second paragraph on the first page you posted?
If you have a fording CDR valve are you sure it is in the right position?
It is not unheard of but relatively rare the rear seal would leak on a 6.5L
You can check youtube on replacing any of the 360 rear seals on GM vehicles as they will all be nearly the same.

 

[Retiredwarhorses]

6.5 requires trans comes out to change seal…I would make sure it’s even your rear main, very rare they leak, 99.9% of the time its your rear pan seal…
6.2 rear main is a 2 piece seal…done differently.