transmission output spline search

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wild4679
Posts: 14
Joined: July 8th, 2017, 7:14 am
Body Type: 82B
Model Year: 1931

transmission output spline search

Post by wild4679 » August 7th, 2017, 5:50 pm

Greetings AA'ers,

I'm rebuilding the 4 sp transmission for my '31. I've found a supplier for all parts I need except what I'm calling the output driveshaft spline. It's the internally and externally splined gear on the outside of the transmission that becomes the male spline into the female spline of the 18 inch coupler driveshaft.

What is this spline called and where do I buy one?

Greg

Bob C
Posts: 1058
Joined: April 24th, 2003, 11:50 am
Body Type: Mail truck, Stake tr
Model Year: 1931
Location: SO CAL

Re: transmission output spline search

Post by Bob C » August 7th, 2017, 6:05 pm

Coupling shaft male gear AA-4811. Have to look for a good used one.

Bob

wild4679
Posts: 14
Joined: July 8th, 2017, 7:14 am
Body Type: 82B
Model Year: 1931

Re: transmission output spline search

Post by wild4679 » August 7th, 2017, 8:28 pm

Thanks Bob. My coupling shaft male gear has the teeth worn down on the output side half, with the portion of the teeth closest to the transmission apparently untouched. If the gear were new, would the entire gear look like the half that is closest to the transmission, or is the gear supposed to be "stepped down" like mine is?

Also, what is the name of the female coupling gear that is on the coupling shaft? I'm assuming with the amount of wear on the male part, the female part is also worn. Is there a supplier for this part?

Last question: If I can't find a suitable used gear in time, does anyone have experience with having a worn gear built up by a welder/machinist?

Greg

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Neil Wilson
Posts: 2457
Joined: February 5th, 2003, 9:42 pm
Body Type: 89-A
Model Year: 1930
Location: Boulder, CO
Contact:

Re: transmission output spline search

Post by Neil Wilson » August 8th, 2017, 5:35 am

wild4679 wrote:
August 7th, 2017, 8:28 pm
If the gear were new, would the entire gear look like the half that is closest to the transmission, or is the gear supposed to be "stepped down" like mine is?

Also, what is the name of the female coupling gear that is on the coupling shaft? I'm assuming with the amount of wear on the male part, the female part is also worn. Is there a supplier for this part?Greg
AA-4811 coupling shaft male gear is shown below. AA-4815-B coupling shaft includes the gear which mates with AA-4811 (see below).
Attachments
xAA-4811 Coupling Shaft Male Gear.jpg
xAA-4811 Coupling Shaft Male Gear.jpg (29.6 KiB) Viewed 162 times
AA-4815-B Coupling Shaft 1.jpg
AA-4815-B Coupling Shaft 1.jpg (489.17 KiB) Viewed 162 times
Regards, Neil Wilson
______________________________________
neilwilson.aaford@gmail.com - use this email for contact
www.aafords.com - AA information and photographs

wild4679
Posts: 14
Joined: July 8th, 2017, 7:14 am
Body Type: 82B
Model Year: 1931

Re: transmission output spline search

Post by wild4679 » August 8th, 2017, 7:04 am

Neil,
Thank you for sending me the pictures of both the male and female splines. My parts show signs of significant wear, with thin teeth on each of the splines.

Does anyone out there know where to buy these parts, or a machine shop that would return my parts to original?

Greg

Bob C
Posts: 1058
Joined: April 24th, 2003, 11:50 am
Body Type: Mail truck, Stake tr
Model Year: 1931
Location: SO CAL

Re: transmission output spline search

Post by Bob C » August 8th, 2017, 8:59 am

You might be able to find a service replacement coupling shaft with the u-joint at both ends.

Bob
coupling-2.jpg
coupling-2.jpg (491.06 KiB) Viewed 141 times

User avatar
Neil Wilson
Posts: 2457
Joined: February 5th, 2003, 9:42 pm
Body Type: 89-A
Model Year: 1930
Location: Boulder, CO
Contact:

Re: transmission output spline search

Post by Neil Wilson » August 9th, 2017, 5:34 am

wild4679 wrote:
August 8th, 2017, 7:04 am
Neil,
Thank you for sending me the pictures of both the male and female splines. My parts show signs of significant wear, with thin teeth on each of the splines. Does anyone out there know where to buy these parts, or a machine shop that would return my parts to original? Greg
I suggest that you place a want ad on this forum. Be sure to indicate which wheel base you have.
Regards, Neil Wilson
______________________________________
neilwilson.aaford@gmail.com - use this email for contact
www.aafords.com - AA information and photographs

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