1958 transmission help
#3
Are you sure it's not the front seal?. You should get a shop manual there is a complete brake down and a transmission diagnosis guide. MY manual doesn't show a breakdown of a jet-a-way or I would take a picture and post it but the slant pan is close in construction and It sounds like a front seal is a more common problem than the torus gasket though both will leak at the same area... Just my thoughts .. Tedd
Last edited by Tedd Thompson; July 19th, 2015 at 08:13 AM.
#5
The front cover of the torus assembly comes apart. Don't recall how many nuts you need to take off, but it is about 6 or so. Remove those nuts and the front cover comes off, and there is the big o-ring seal. Like others have said, this does not usually leak, more likely the front pump seal, which you should replace too.
#6
We had the fly wheel off in thinking that big o ring is in there wrong and I can't find a diagram on how it's supposed to be it didn't leak any oil before now it's a steady stream from the bell housing
#7
From the 1958 Oldsmobile shop manual
Page 3-80 says:"Install a new flywheel housing "O" ring on the housing. Make sure "O" ring is seated in the groove.
Install flywheel housing with the 6 attaching bolts and washers. Tighten evenly and torque 40 to 50 ft.-lbs."
There is no "diagram" at this point. Fig. 3-151 is a photo showing installation of the "O" ring. It appears "straightforward". It seems that this would not be done incorrectly.
Fig. 3-166 is a diagram showing the front of the transmission and the possible locations for a leak.
Concerning leaks at the front of the transmission, omitting loose drain plug, porous castings, and bad welds, the usual suspects are:
Torus cover to flywheel seal damaged or improperly installed.
Flywheel bolts loose.
Front seal leaks.
Flywheel housing to case "O" ring damaged or improperly installed.
Install flywheel housing with the 6 attaching bolts and washers. Tighten evenly and torque 40 to 50 ft.-lbs."
There is no "diagram" at this point. Fig. 3-151 is a photo showing installation of the "O" ring. It appears "straightforward". It seems that this would not be done incorrectly.
Fig. 3-166 is a diagram showing the front of the transmission and the possible locations for a leak.
Concerning leaks at the front of the transmission, omitting loose drain plug, porous castings, and bad welds, the usual suspects are:
Torus cover to flywheel seal damaged or improperly installed.
Flywheel bolts loose.
Front seal leaks.
Flywheel housing to case "O" ring damaged or improperly installed.
#8
This stream is when the engine is running I presume. If it stops after shutting the engine down, I would say it's more likely to be the front trans seal. However to replace the seal you still need to dis-assemble the Torus assy. Which means the flywheel O-ring still needs to be inspected/replaced in the process. Just don't short change your self here by skipping the front seal replacement.
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