Changing a Rear Crankshaft Seal in an F-134

I am still awaiting my brake lines. Got all the electrical wiring figured out, labeled it and put where it belongs, except for one thing. The hi-beam indicator lights up when the lows are on. I thought it might be the wires were swapped on the floor-mounted dimmer switch, but this is not the case. Apparently the hi-beam indicator was tapped into the wire for the lows, further upstream. Minor...

But I have "driven" a few miles with the Jeep on the jackstands to see if there are any leaks from the rebuild I did, and all seems tight except for one major thing. The rear crankshaft seal on the F-134 seems to be leaking. Seems like rear seals have been the plague of my life: 351 Ford Windsor (1975), two Datsun pickup trucks (1973 1600 cc and 1985 2000), 1974 Vega, 2300 sleeved, 1952 Caddy, and I am sure there were a few more. I am also sure that I am not the first one to ask this question, so forgive me if this has been covered ad nauseum before. Doesn't hurt to try and get the latest and greatest info, though...

So the question is this: Can I change the rear seal with the engine in the Jeep or do I need to pull it? What kind of kits are available and what do you recommend? I know that sometimes with newer technologies, there are much better sealing materials available, and smart people come up with ways to make whatever needs to be done as easy as possible. Let me know what you know. Thanks in advance for sharing your experience with a jeep neophyte...

 

A little over-simplified.
It can be done if you like to lay on the floor looking up at the bottom of the motor.
If you used the rope-style seal, it can be labor-intensive to remove that, but again, not impossible.
My father made a small tool for that purpose.


http://blog.kaiserwillys.com/willys-jeep-parts-qa-neoprene-rear-main-oil-seal

 

I think the tool you are referring to is the "sneaky pete" tool for removing a rope seal.

I don't have any experience in removing a seal so I cannot comment on the removal procedure.

 

Thanks for the information. I believe that is the tool you mention. The name sounds correct. The leak is not a bad one, but I am an obsessive-compulsive type and everything has to be right. I really don't enjoy this curse, but having it has paid off in my work. I will check and see if I can find one of these tools and see if it is the one I had.

Have a great day...

c.