Getting the oil pan not to leak was a problem I could not solve and took that to my mechanic to do over. One of the most painful hand exercises yet. I used a pair of pliers that wouldn't bung up the seal to give it a little push up into the hole. It should get over the curvature then get stuck. Use the index finger to guide it into the hole then push up with your thumb. To slide the new one in, cup the 1/2 seal with your thumb and index finger.
You might want to lube the seal a little on the edges and tip before it goes in. Offsetting the seals is important so the intersection doesn't line up with the block/cap seam. If your rope seal was in great shape that CDR value is probably not functioning and you're getting pressure in the crank case. When in operation, these seals self lubricate and wear themselves in to accommodate the minor imperfections of the associated sealing surface. It definitely helps to add some lube to these when installing. Make sure you test/check/replace your CDR value. Old school rubber looking (Viton/EPDM) seals are designed to lose a very small amount of oil over time. REAR CRANKSHAFT OIL SEAL AND INSTALLER P/N 3925529 SUIT 1989 AND.
My first attempt also failed and still leaked. CUMMINS 6BT REAR MAIN OIL SEAL WITH STEEL INSTALLER.
The new seal gets shaved off as it goes in.ĭropping the crank was not an option with the engine in the vehicle. Here is where I think the oil is coming from this time.I had the exact same problems.
Just seeing if anyone else is experiencing anything similar? I asked if the problem would be corrected since I don't want to be going through a week with a loaner and its a 12 hour job of pulling my transmission and everything else out everytime this comes about, they said it should be corrected, but I'm thinking it's not. Not near as bad as the first time it let go and sprayed all underneath but still very concerning. I've been reading some posts on here about other people's rear main seal failing, I was just wondering if anyone got it fixed then it happened again not even 1000kms later.Īnyone else have an issue with the main rear seal in the 3.0 Duramaxs? GM knows about the issue as there is a service bulletin on the matter, I took it to the dealer last week with no oil on the dip stick, they had it for about a week, got it back on Wednesday, and noticed yesterday evening oil drips again, at first I was just thinking it was run off/spray from the last malfunction but it still going today.
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