speedometer cable leak, transfer case leak
Posted: Fri Jun 26, 2020 10:03 am
I have been trying to get my M38 road worthy but have had a constant, pretty heavy transfer case leak. Initially it was coming from the rear transfer case cover and I seem to have fixed that by taking a slight bow out of the cover and replacing the gasket and sealant.
The leak continued although not as bad but still a pretty good puddle and it was oriented more to the right side than the center as it had been. I could find no signs of leak except at the rear and finally decided that I needed to redo the rear cap and shims etc.
This morning I pulled the parking brake assembly and there was no sign of leakage around the seal or the splines on the yoke and I didn't see anything obvious around the cap. When I took off the speedometer cable I noticed oil on the inside lower frame rail. After removing the cable I noticed transmission oil leaking out of it from a slight cut in the outer shielding.
I guess my question is, does enough transmission fluid get forced through the cable to cause a fairly noticeable leak?
I also looked in the ord-9 and noticed a listing for gaskets for both ends of the speedometer cable
7539688 GASKET, ru, 41/64 ID, 57/64 ; OD, 9/64 thk, speedometer
shaft, drive end
7539689 GASKET, ru, flexible shaft, 15/32 ID, 41/64 OD, 1/16 thk,
speedometer shaft, head end
From the description I would guess that they are o rings that go up in the nut that holds the cable at each end.
I plan on finishing removing the rear cap. recheck the end play and re seal the shims and bolts but I wonder if enough fluid could get pumped out the speedometer cable because of the lack of gaskets and the hole in the shielding to cause a moderate type leak.
The leak continued although not as bad but still a pretty good puddle and it was oriented more to the right side than the center as it had been. I could find no signs of leak except at the rear and finally decided that I needed to redo the rear cap and shims etc.
This morning I pulled the parking brake assembly and there was no sign of leakage around the seal or the splines on the yoke and I didn't see anything obvious around the cap. When I took off the speedometer cable I noticed oil on the inside lower frame rail. After removing the cable I noticed transmission oil leaking out of it from a slight cut in the outer shielding.
I guess my question is, does enough transmission fluid get forced through the cable to cause a fairly noticeable leak?
I also looked in the ord-9 and noticed a listing for gaskets for both ends of the speedometer cable
7539688 GASKET, ru, 41/64 ID, 57/64 ; OD, 9/64 thk, speedometer
shaft, drive end
7539689 GASKET, ru, flexible shaft, 15/32 ID, 41/64 OD, 1/16 thk,
speedometer shaft, head end
From the description I would guess that they are o rings that go up in the nut that holds the cable at each end.
I plan on finishing removing the rear cap. recheck the end play and re seal the shims and bolts but I wonder if enough fluid could get pumped out the speedometer cable because of the lack of gaskets and the hole in the shielding to cause a moderate type leak.