48 cadillac rear seal QUESTION?

[don hughes]

can we replace main rear seal without removing the engine by using a special tool to pull it thru? has anyone done this successfully? Need information asap... to: donwy@aol.com

[Bruce Reynolds # 18992]

Gday Don,

I know it can be done, but every one I do, I do it the proper way and remove the engine and remove the crankshaft whilst it is upside down on the engine stand, leaving the pistons and rods still in their bores.

This way, I can guarantee that the top seal half is properly in place.

I consider the other methods a cheap and nasty way of shortcutting an important task, which is usually attempted to stop a leak when selling.

Bruce,
The Tassie Devil(le),
60 CDV

[John Washburn]

Don,

I agree, although it pains me, with Bruce. But the option is to buy the tool, it was called, I think, a sneeky pete. Looked like one of those Chinese games, but did work. I have one somewhere. They are still made and I think NAPA still carries these (if you really want to pursue this I can find the tool, and see if there is a part number). Or I can send you a picture.

But again, check the web, it seems someone makes the new neoprene seals for these old cars to stop the leaking. But you have to pull the engine. Check with Bruce, I dont think he is that busy. Oh, it will cost you a few bucks for airfair and beer.

John Washburn
CLC #1067

[Bruce Reynolds # 18992]

Gday Don and John,

I can just pop over at any time and John and I can simply supervise you, and step in to assist in lowering the crank back into the block, as long as I dont get my hands too dirty.   Hate to drop a nice cold one.

But, as John mentioned, the ticket(s) over would be the costly part of the exercise.   Plus, the freight on my tools would break the bank.

Bruce,
The Tassie Devil(le),
60 CDV

[Harry Scott]

The modern replacement is a mid 80s Mercedes diesel seal. It can still be installed with a sneaky pete. My understanding of the use of that tool is that you have to loosen the crank so it will drop down enough to slide the upper seal through the groove. This would also mean taking the transmission loose. I agree with Bruce about it being easier to pull the engine and not take the chance of trying to do the job standing on your head under the car and trying to get the rear main cap back on right so as not to leak.