hydrolic144

iTrader: (2)

So my front pump seal, that goes around the shaft, will leak a pretty good bit if sat for about 2 days or so. If I drive it everyday then it's alright, also it my tranny would slip sometimes in first and sometimes in third when I step on it. I never did put the correct amount of fluid in when I had my engine rebuilt and what not, but haven't driven it but up the street. And fluid is definitely getting to where it needs to go. My question is, why is it that if the front seal is to be replaced, that deems the pump is bad? I don't get it. Why not just replace the front seal and carry on?

Sandslot

iTrader: (2)

If you have slip in the trans, I'd stop driving it anywhere...put it on a level surface & top it off. If you still have slip, you likely have some burnt steel and fiber plates and will need to pull the forward clutch....not so easy to do. If it does not slip, I would replace the front seal. be sure to check the shaft for a bur also.

hydrolic144

iTrader: (2)

Thanks for the swift response. I definitely know it's a lack of fluid cause when it was close to full, it was great. Now I have the tranny on the ground and I'm ready to do the front seal. But was searching and saw people were saying you need a rebuild or new tranny if just the front seal is leaking. Also a "bur" on the shaft, what do you mean exactly?

Sandslot

iTrader: (2)

Sometimes if the torque converter is installed "roughly", you can develop a bur or nick on the shaft...which depending on where it is can cut the seal. this is especially true if the converter had a nick on it. Check both surfaces that run on the seal. Also, when reinstalling the converter, put some light grease on the mating surfaces

hydrolic144

iTrader: (2)

Awesome. Definitely aren't any nicks or grooves on the torque converter itself but haven't inspected the shaft. Will check the shaft tomorrow before I buy the $4 seal. Any tips or articles on replacing this? Never done one before and normally I'm pretty good at diving into things, but I have no experience in this area. Thanks a lot!

Sandslot

iTrader: (2)

Just take your time. Start when you have all kinds of time...work your way around the seal with a lightweight hammer. Its got a nice flange...but you just need to be patient. Don't let the start of the seal frustrate you...you'll bend/kink it & then you'll need another.

hydrolic144

iTrader: (2)

I'll probably get two then. Heck they are only $4 a piece.

Floor guy

If the bushing in the pump (behind the front seal) is worn, a new seal won't last long. Be sure to inspect it carefully while the seal is out.

Pro Built Automatics

Front seals do not leak from sitting. They are a pressure type of seal and will leak when running, and stop leaking when the motor is turned off. I have never seen a front seal leak when sitting in 33+ years of doing this, and I have talked to other builders about this with the same results. Top hat seals at the TV cable or dipstick tube are the most common leaks when sitting. Front pump bolt seals rarely leak.

hydrolic144

iTrader: (2)

This would make sense. Unfortunately I little to no experience with transmissions so it was just a first thought. I also think it may be time for a filter/pan gasket change. Also I discovered both of my trans lines to have very small leaks. I will be tackling these tomorrow and hope to have it resolved. Thanks for all the help!

hydrolic144

iTrader: (2)

Turns out it was my TV cable seal!!