interesting couplingshaft found on 31AA anyone know about?

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birdacre
Posts: 480
Joined: October 8th, 2013, 2:37 pm
Body Type: AA express
Model Year: 1928

interesting couplingshaft found on 31AA anyone know about?

Post by birdacre »

i have two AA dump trucks. i was not sure of years 30 or 31. i took intermediate shaft out of one and found a gear that bolts on output shaft of the 4 speed. the next truck i took apart has a u joint on the back of the 4 speed. this must be the unique set up that is discussed on page 27 of jim schilds AA shop manual. it looks identical to the photos. i guess the advantage of this is that the rear end does not have to be pulled back to get the transmission out. does this sound accurate to those that are knowledgeable about this. seems that if this is true this is the coupling i should use. now i just have to find a good four speed case that is not cracked. i also have 2 PTO assemblies that bolt on the four speeds if anyone is interested. let me know, and thank you in advance, kevin in ct
Hayslip
Posts: 235
Joined: February 26th, 2007, 6:20 am
Model Year: 1930

Re: interesting couplingshaft found on 31AA anyone know abo

Post by Hayslip »

See the 1932 Service Bulletins for this shaft. It was a good idea;, saves a lot of work to replace a clutch.
Hayslip
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stew
Posts: 70
Joined: June 2nd, 2012, 4:46 am
Body Type: dump
Model Year: 1931
Location: Lake Mills, Wisconsin

Re: interesting couplingshaft found on 31AA anyone know abo

Post by stew »

What brand are the PTO's ?
Always one bad decision away from a good time.
birdacre
Posts: 480
Joined: October 8th, 2013, 2:37 pm
Body Type: AA express
Model Year: 1928

Re: interesting couplingshaft found on 31AA anyone know abo

Post by birdacre »

i will check the pto's. i just removed them the other day and will get back to you. thank you. kevin
birdacre
Posts: 480
Joined: October 8th, 2013, 2:37 pm
Body Type: AA express
Model Year: 1928

Re: interesting couplingshaft found on 31AA anyone know abo

Post by birdacre »

can you send me a link to the 1932 service bulletins? thank you for the info. kevin
birdacre
Posts: 480
Joined: October 8th, 2013, 2:37 pm
Body Type: AA express
Model Year: 1928

Re: interesting couplingshaft found on 31AA anyone know abo

Post by birdacre »

i am wondering if this special shaft will work with a 28 worm drive rear end. i think someone told me once it only works with bevel gear rear end. any ideas out there? thank you, kevin
Bob C
Posts: 1442
Joined: April 24th, 2003, 11:50 am
Body Type: Mail truck, Stake tr
Model Year: 1931
Location: SO CAL

Re: interesting couplingshaft found on 31AA anyone know abo

Post by Bob C »

This is from the 32 Service Bulletins.

Bob
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birdacre
Posts: 480
Joined: October 8th, 2013, 2:37 pm
Body Type: AA express
Model Year: 1928

Re: interesting couplingshaft found on 31AA anyone know abo

Post by birdacre »

hey thank you for the photo. yes, it sure does say bevel gear at top. i guess i will not be able to employ this great update with a worm drive. thank you. kevin
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