7.3L Power Stroke Engine and DrivetrainDiscussion of the 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
I have a 2002 f350 7.3 and I have 88,000 miles on it.About 2 month ago it started to leak from the rear oil seal had it replaced 3 times and it still leaks can any one help me please.I know it is comming from the rear seal.I took the transmission off and it is dripping between the shaft and seal bottom side.Is there something out there that will stop this?
Last edited by americanbuilt : 05-24-2008 at 11:13 AM.
Yea, I would start at the top before going to the rear seal. Get a flashlight and stand on top of the bumper, look for a puddle of oil down in the engine valley, bewteen the two valve covers. If you do see some it is probably just an o ring on one of the hpop lines.
It is rare to see a leaking rear crank seal on the motors... however, it does happen.
The production seal rides directly on the crankshaft. If you are using the seal that Ford supplies (this seal is from Navistar), it will come with a wear sleeve. Ford cautions us against separating the seal from the wear sleeve (probably engineers playing CYA) and I prefer to follow that advice. Using the special tool, the seal and wear ring can be installed as an assembly.
There are two dowel pins to locate the seal carrier - make sure these are both in place. Grey RTV is the good stuff for sealing the seal carrier to the back of the block.
FWIW, I have seen more oil pans leak at the bottom of the rear main bearing cap than I have seen crank seals leaking. Even with your low miles, I would also consider the possibility of excessive crankcase pressure being a remote possibility for repeat seal failure. While I haven't seen any crankshaft failures that could give this kind of grief, it may be worth your while to check runout of the rear end of the crank with a dial indicator...
Repeat failures are a sign that we are overlooking something.. times like this, I get even more anal than I already am.
I have a 2002 f350 7.3 and I have 88,000 miles on it.About 2 month ago it started to leak from the rear oil seal had it replaced 3 times and it still leaks can any one help me please.I know it is comming from the rear seal.I took the transmission off and it is dripping between the shaft and seal bottom side.Is there something out there that will stop this?
GrampyJim just wanted to tell you thank you for helping me out with my oil leak.And to all the othe people who replied thank you...it was just an O ring on the end of the HPOP it was leaking all over the place now I have know leaks.thank you all for helping out
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rear oil seal leak
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