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-   -   Rear main seal (http://www.peachparts.com/shopforum/diesel-discussion/125724-rear-main-seal.html)

Frankenbenz 07-11-2005 08:09 AM

No I didn't get any pictures. I thought about it, but I didn't want to do that to my digital camera. There was a constant 1/8 inch thick black coating on my hands. It was loosing a quart every 500 miles. I didn't want ya'll to see my crooked tap job either. They aren't pretty but they are sealed.

Frankenbenz 07-14-2005 09:18 AM

I finished installing my engine yesterday. The leak from the rear of the engine was the same, possibly worse. I'm going to do the dye in the oil thing and pull the tranny. Anybody got any suggestions? It leaks about one drop every second.

Frankenbenz 07-28-2005 01:57 PM

The Leak is Fixed
 
I borrowed a UV light from a mechanic friend and bought some oil dye. My friend told me to use two bottles, but I only used one. I should have use two like he said. I had some difficulty seeing the dye. I tracked it down to the lower gallery that feeds the main bearing. I pulled the plug and wrapped teflon tape around it (4 turns) and tightened it down. I then put the backing plate and flywheel on and I put two bolts to hold the starter on and started it up. It really was not that loud. I let it idle about 5 minutes and no leak. :)

brabus 07-29-2005 04:46 AM

Quote:

Originally Posted by Johnhef
Verify its not your headgasket seeping oil at the rear of the head, thats far more common than rear main seals leaking.

I had a leaking valve cover gasket that only leaked in the back. I would have bet my life it was the rear main seal because I had just replaced the one in the front. It was by pure mistake I noticed it.

grantdcol 12-20-2005 03:31 PM

Quote:

Originally Posted by Frankenbenz
I got the rear main replaced. I had to pull the crank! I also replaced the two ball bearing that close the oil passages in the back with 1/2 inch pipe plugs. This should fix my oil leak. I got the engine all back together and ready to drop in. I did take the opportunity to check the B2 piston and thank goodness I have the upgraded piston. I tore the engine down so far I might as well overhauled it. I should have it up an running by Wednesday. I'll let you know how it turns out

Frank, can you expand on the B2 piston issue? I was planning on replacing my rear main seal this weekend, but after reading this thread, I'm not convinced that's where the problem lies... I've already replaced the pan gasket, valve cover gasket, and the two gaskets on the oil filter assembly. I keep seeing oil in the seem between the engine and transmission.

Does the crank have to be pulled to replace the seal? Does the engine? I was planning on just pulling the transmission...

Any help appreciated!

-Colin

engatwork 12-20-2005 04:29 PM

Quote:

Does the crank have to be pulled to replace the seal? Does the engine?
If it is the 616 or 617 diesel engine they yest to both. Pulling the tranny won't allow replacement of the rear main on these engines.


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