3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

rear main seal change

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Old 03-08-2009, 09:01 PM
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rear main seal change

I was driving through vegas yesterday and looked under my truck, I had oil all over everything under the engine. It looks like its leaking between the engine and tranny I was wondering how hard it is to change the seal and what special tools are needed?
Its leaking a quart every hundred miles so it has to be fixed. I also noticed every now and then the pyro gauge would start going crazy, I would shut the truck down and everything would be fine. Im thinking there might be an injector sticking too. I could not smell diesel in the oil but I thought it was higher on the dipstick. any advice would be helpfull I have to have it running by the end of the week.
Old 03-09-2009, 09:03 PM
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Not sure about your injector issue but when I replaced my clutch I too noticed a significant amount of oil dripping from the bellhousing. I went to the local Freightliner dealership to order my rear main seal (WAYYYY cheaper than Dodge) and they told me to replace the o-ring on the back of the cam. Pulled the tranny and come to find out the rear main was hardly leaking at all. That little 0-ring was the cause of the leak. Had everything tore apart so went ahead and replace the rear main too, better safe than sorry. Good luck.
Old 03-09-2009, 11:42 PM
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It's common to have that O ring behind the cam leaking...........always worth replacing while it's apart.
Old 03-09-2009, 11:51 PM
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if you rengine is making oil (oil level increasing) you may have a high pressure leak, does it have a chip on it?
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