Rear seal leaking

[jesbob]

I have a 69 440 that has had a new rear seal put in last winter that is now leaking. Is there a way to replace the seal without pulling the engine? If so, can you please explain how its done. Thanks in advance for your help. The motor is in a 63 Dodge B Body and has an 727 tranny.

[jesbob]

anyone????

[72Challenger]

This procedure works to replace the stock, original rope-type seals with the replacement rubber type.

1. Remove the oil pan.
2. Remove the rear seal retainer and the rear main bearing cap.
3. Remove the lower rope seal by prying from the side with a small screwdriver.
4. To remove the upper rope seal, drive up on either exposed end of the seal with a 6 inch piece of 3/16 inch brazing rod. When the opposite end of the seal starts to protrude from the block, have an assistant grasp it with pliers and gently pull it from the block while the opposite end is being driven.
5. Wipe the crankshaft clean and lightly oil crankshaft and new seal before installing seal.
6. Loosen all main bearing caps slightly to lower the cranshaft which will ease installation.

CAUTION: Do not allow the crankshaft to drop enough to permit the main bearings to become displaced on the crankshaft.

7. Hold the seal tightly against the crankshaft with the thumb (with paint stripe to the rear) and install the seal in the block groove. Rotate the crankshaft if necessary while installing the seal in the groove. Make sure the sharp edges on the block groove do not cut or nick the rear of the seal.
8. Install lower half of seal (with paint stripe to the rear) into the lower seal retainer.
9. Install rear main bearing cap.
10. Tighten all main bearing caps to specification.

NOTE: make sure all main bearings are located in their proper position before tightening the main bearing caps.

[pishta]

All 72 said and a few more. You can get a "Sneaky Pete" From Lysle (?) tool makers. It is like a braided cable that can be used to grab the new rope seal from AROUND the TOP of the crank surface and pull it into place, then you trim with a razor. I have replaces motor side main bearings using a heavy paper clip bent and stuck into the oil passage of the crank and used as a stop to push the old/new shell into place while turning the crank. May depend on the bearing number though.

[jesbob]

sounds good. thanks for the tips.
Bob