Main auto oil seals Reinstallation

Dave’s first indication of a possible endplay problem was a slipping clutch. It was especially noticeable when shifting down while climbing a hill. Also, Dave noticed an excessive amount of oil on the floor in the garage. Upon examination it was found that the leak was coming from between the engine case and the tranny, indicating a probable main auto oil seals problem.
So Dave resignedly removed the engine from the car for the fourth time. The further he got into it, the more problems he found. The most disturbing thing was that the metal of the engine casing forward of the flywheel was worn, in about a 4-inch diameter area around the auto oil seals, and there were little shavings of metal laying around.
Rob wrote to say — That’s typical when the front main bearing spins in the case. This is starting to get into “gulp” country – internal case work is required if the main bearing has spun. They are normally held in position in the engine case by some kind of pin or bump in the shell of the bearing (I can’t picture it from memory) and if they spin they can wear out the bearing carrier, which is part of the case. auto auto oil seals Environmental.auto auto oil seals Environmental.I think it can be repaired by boring the case and using a “fatter” bearing shell to take up the space induced by the boring.rubber sealing.
“Speedy Jim” wrote with a “poor man’s” endplay test –
Remove the flywheel and push in on the bearing. (Prying with a large screwdriver works well.)shaft seal.
Push the crank back in from the pulley end.
Repeat. What you’re trying to do is make the crankshaft move longitudinally through the case.dust seal.
Look for movement at both/either end of the crankshaft.
If you can see any movement of the crankshaft, the bearing has spun.
In other words, see if the crankshaft can be push-pulled long-wise through the case. If you can see/feel more than the tiniest motion (0.006″– same feel as a normal tappet movement), the end-play is excessive, usually due to the bearing. auto auto oil seals Environmental.If the bearing has been spun, you can NOT compensate by shimming more.car seal.
The main bearing takes the “end load” — the push-pull load on the crankshaft. So if this bearing has “spun” in the engine case, then the end-play is no longer properly controlled and the crankshaft can move fore-aft. That’s what causes the main auto oil seals to get rubbed and damaged. Also, if the bearing has spun, the engine case may be damaged; if so, internal engine case work will be required to repair it (at least a partial engine rebuild).