Universal joint mateing to gear box

[firechief5215]

As most know our model a is a fire truck, we are having a problem because the Universal joint mates up to a gear box then out of gear box to the rear. My problem is that the transmission end hooks up to the transmission as normal a model a would . The other end hooks up to a gear box and there is a slip sleeve looking thing . It has a round about 2 in piece of pipe that has internal splines in it That mates to a gear that has external splines in it. Im wondering if this sound like a piece that they may have use on a wrecker or something and not just our fire pump. It has 3 different fabric seals that need replaced and the splines are getting a little play. I didn't get pictures because they sent it to a shop to see if they would know Thanks Billy

[2manycars]

Sounds like you have an auxiliary "dual high" 2 speed reduction transmission. The internal/external gear setup you describe is normal for that unit.

[Steve Plucker]

Billy,

Contact Neil Wilson...He is head of the Model AA Truck Club...He might have some thoughts on this also as well as the members here.

Pluck

[Bob C]

There should either be a coupling shaft or an auxiliary transmission behind
your main box.

Bob

[Tom Wesenberg]

It sounds like the same coupling shaft that was on the 1930 AA I restored for a guy. The coupling shaft was really worn out, including the outer cover, and the parts were fairly hard to find. Between Bert's, Little Dearborn, and swap meets, I was able to find all the parts to assemble a new coupling shaft from NOS and mint used parts.

[Rowdy]

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If you do not find what you need by mid March send me a PM. Have a coupling shaft with a pile of parts I still need to pick up. Can not get to that place until the snow melts off. Rod

[Brian T]

Here is a pic of the coupler that is used when the HI LO unit isn't used, does it look like this?, is the rear axle still the truck?, the coupler you refer to can't be removed with it still in place.

[Rowdy]

I believe there were 2 different lengths of these coupler shafts. The one I will hopefully be retreiving is from an early 30. I did not measure it when looking at the parts. So it may or may not be the one you need. Rod

[Tom Wesenberg]

I'm not sure about the length, but know that 2 styles were mentioned when I was looking for the late 30 AA parts. As Pluck mentioned, Neil Wilson is the AA man.

[firechief5215]

Thank you for your help as soon as I get the shaft back I will post pictures Thank You