Drive Train Problems

[Vicky]

Hi Everyone -

I have some severe damage in my ’30 drive train and I would like to avoid having it happen again!

I know I’ll need the complete coupling shaft as the female gears are worn and the U Joint destroyed. I’ll believe I’ll also need the male gear that goes on the tranny shaft.

Also, the spring, screw, washer are missing - I don’t remember if they were missing when I first did the truck in the 80s. But I cannot image I would not put parts back if they were there.

There is also damage to the rear end housing – I sure hope that doesn’t need to be replaced!

The roller bearing in the Torque Tube self destructed - I assume the piece at the bottom of the sleve is the other part of the bearing.How do I get that out?

Any comments or suggestions would be appreciated.

Thanks a lot.

Vicky

Pictures are below.

[Neil Wilson]

Vicky,
The third picture below shows the drive shaft bearing parts. The AA-4686 is a grease retainer which is inserted first into the torque tube (from the front end). The grease retainer and AA-4655 sleeve must be driven out the front of the torque tube from the rear using a tool (fitting) on a length of pipe which extends out about 6" longer than the rear of the torque tube.

I made the tool (fitting) as shown in pictures 2 and 1 below.

The fitting and pipe are inserted from the rear end of the torque tube. With the rear end of the pipe on the floor, the torque tube can be raised up about 6" and then dropped resulting in the fitting pushing the grease retainer and sleeve out the front.

Place a piece of plywood on the floor so that the floor and torque tube are not damaged. The grease retainer will have to be replaced.

[Vicky]

Thanks, Neil. Your pictures are marvelous - I hope you're planning to do a book on the AA! Do you have to do them each time someone asks a question or do you have them already done?

Your tool looks simple enough - I'll get the parts tomorrow

What do you think about that rear end housing?

Thanks a lot for your time and patience!

Vicky

[Neil Wilson]

Vicky,
I had to take the pictures of the drive shaft bearings and the tool. The tool was a result of questions from another AA'er asking how to get the grease seal and sleeve out. So, my research ended with the tool shown. I will not have the pictures for future use.

The tool (fitting) is sold for removing the grease seal and sleeve for an A. However, it is too small to work for the AA. I bought the A tool and then determined the problem.

I could not figure out what I was looking at in your picture of the rear end housing. I am not sure if it is the rear of the torque tube or the axle housing??? And, does your truck have a worm drive or bevel axle?

[Bob C]

Neil, I think that one picture is the pinion gear pilot bearing in a
bevel gear rear end.

[Mike in Maine]

Vicky,
I take it that you are pointing to the casting around the pinion pilot bearing. It does appear to be chewed up. If you have all the teeth on ring and pinion and no chunks of metal in the carrier you should be ok. Look for any cracks around the pilot bearing ledge. From what I can see in your picture it appears as this differential has been apart before. There a two bolts holding the pilot bearing plate. Those are not original. The plate was held in by rivets originally. You may be looking at past damage.
Regards,Mike

[Mike in Maine]

Vicky,
I should add that you need to take out the pilot bearing and race and check for cracks in the housing.
Mike

[Vicky]

Thanks a lot, everyone.

I'll go down and see what I have and report back.

Vicky