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Old one-piece oil seal housing A note about the single piece oil seal housing, the TM is still incorrect in saying to install the housing then the seal. The seal must be driven into the one-piece housing from behind. The two-piece design will allow one to remove and install the seal with the...

Oil seal install I have been slacking off in my reporting, so here goes… Last Saturday my neighbor and I finished up the rear main seal/clutch job. All went fairly well. We started by unbolting the starter from the flywheel housing. Using a cargo strap, we suspended it from the forward...

:ditto:Wish me luck. Diggin' deep tomorrow. Gonna get this "son-of-a-beehive mother fletcher" running, if I have to tear my last strands of hair out.[thumbzup]

Install seal into housing There is a prominent lip in the housing portion to seat the seal against. I first test-fitted the seal into the housing with the seal lip facing into what would be the engine block. Using a soft plastic headed hammer, I drove the seal fully into seat using light taps...

Oil Seal Housing details Well, since I drilled into the outer edge of the oil seal housing (AKA rear cover), I decided to purchase a new one. I ordered it from Memphis Eq. under p/n 216165. The part is actually two parts, the oil seal housing and the outer ring/o-ring carrier. Mine came with...

Update: More parts An update on this job. I have accumulated some more parts over the last few days and I thought I would post some pics and info on them. Rear main seal w/ installation sleeve: I ordered it under p/n 3006737 (the number listed in TM -34-1) from...

I have attempted to remove the seal via the blue arrow ring and I get not a budge. The elusive o-ring is behind that ring on the outer edge butting up to the flywheel housing. This leads me to believe the blue arrow ring is in fact integral to the rear cover/oil housing and I have messed up...

This repair is listed in the -34-1. So, I guess that would make it a third echelon/third shop or higher job. Not a simple motorpool/field fix. As far as tanks go, the unit maintenance could pull a power pack and change out small parts such as a starter. However, a turbine replacement was...

Update: Talked to the guys down at Memphis Eq. and they said the bell housing needs to come off with the style I have to get to the rear cover/oil seal housing. They also said very rarely, if at all, does the bell housing need to dialed back in. My seal should be here this week, so...

UPDATE 18AUG12: The job is done! See page 2 post 19 & 20 for details... UPDATE 08AUG12: I have pretty much figured this all out. Please read on as I post the details of my progress. I have removed all components involved to get into the flywheel housing of the NHC250 in my M818. Now, TM...