Transmission Help

[gwj]

Can anyone provide the procedure for replacing the transmission output shaft seal, on an 3000 MH.

[gwj]

Can anyone provide the procedure for replacing the transmission output shaft seal, on an 3000 MH.

[gwj]

Someone has to have some info.

[Joe-K]

I have a feeling that with the cost of the tranny and the difficulty in separating it from the engine then dropping it, not many folks here have replaced a front seal themselves on a Allision transmission.

I'm curious, if you've removed the transmission, could you take it to a Allision service shop and just have them change the seal, then replace the transmission yourself?

[gwj]

I was told the output shaft seal was the seal on the rear of the transmission, thats where the leak is. Where the drive shaft ties into the transmission.

[Cruzer]

Yes, it is on the rear. On some transmissions you simply remove the drive shaft, then pry the old seal out and pop a new one in. I don't know if it's that easy on the Allison though.

One other consideration is why it failed. If it was nicked or damaged, then a simple replacement will be fine. But, if there's something else wrong, like a worn driveshaft support bushing, then the next seal will fail quickly too unless the real cause is taken care of first. It could go either way.

[Jerry Andre]

Had mine changed recently at allison shop. Cost $90 for 1 hour labor and $19.95 for seal. So its not to difficult of a job.

[gwj]

Thanks for the info!

[JJWalters]

I brought my car in for an engine oil change. The shop now says that I need an output shaft for the front right side because of a leak.. I park my car in the garage every night and I have not seen a drop of tranny fluid or any other fluid for that matter. What are your thoughts? Its a 2005 Malibu 90,000. Highway travel for work..