Play in Rear Spring Seat Assembly

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dlevy
Posts: 53
Joined: April 12th, 2016, 9:20 pm
Body Type: 82B
Model Year: 1931

Play in Rear Spring Seat Assembly

Post by dlevy » February 4th, 2020, 8:53 pm

Hi,

I have a question about the rear spring seat assemblies that the aft end of the rear spring attaches to and then clamps around the differential axle housing.

Both the rear spring seat assemblies and the surface of the axle housing are pretty well worn to the point that there are grooves in the axle housing and when I put the rear spring seat assemblies (AA-5792 or AA-5793) around the axle housing, there is a lot of play; at least a 1/16" of motion in any direction.

Is this acceptable?
Is there a fix for this?
It is not clear to me why there was not a bushing at this location.

Any thoughts are appreciated.

Thanks,
Dave
Attachments
Rear Spring Seat on Differential Axle Housing B.jpg
Rear Spring Seat on Differential Axle Housing B.jpg (294.32 KiB) Viewed 300 times
Rear Spring Seat Assemblies.jpg
Rear Spring Seat Assemblies.jpg (262.63 KiB) Viewed 300 times

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Chris Haynes
Posts: 2098
Joined: September 7th, 2003, 5:18 pm
Body Type: 82A
Model Year: 1930
Location: North Hills, CA/ Pine Grove, CA

Re: Play in Rear Spring Seat Assembly

Post by Chris Haynes » February 4th, 2020, 10:36 pm

Shows a lack of grease. Keep is greased and you won'r have any problems.

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Farrell In Vancouver
Posts: 313
Joined: February 23rd, 2011, 6:52 am
Body Type: Deck
Model Year: 1931
Location: Vancouver BC Canada

Re: Play in Rear Spring Seat Assembly

Post by Farrell In Vancouver » February 5th, 2020, 8:38 am

Keep in mind all the weight of the rear of the truck will wear the top clamp and top of the axle. I found a couple better fitting ones but still needed to build a couple areas up with weld and filed down to fit tighter. if there is still excessive play you can file the flats of the clamps down a bit to clamp tighter, but unless you are in the habit of "Getting Air" in your double A, I don't think you'll notice anything once she's down on the axle and wheels.

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1crosscut
Posts: 826
Joined: December 25th, 2010, 7:22 pm
Body Type: 82-A
Model Year: 1929
Location: Lincoln, NE

Re: Play in Rear Spring Seat Assembly

Post by 1crosscut » February 5th, 2020, 6:51 pm

The grooves are part of the design. I believe that they are there to help with the retention/distribution of grease.
------------
Dave

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Neil Wilson
Posts: 2805
Joined: February 5th, 2003, 9:42 pm
Body Type: 82-A/89-A
Model Year: 1930
Location: Boulder, CO
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Re: Play in Rear Spring Seat Assembly

Post by Neil Wilson » February 6th, 2020, 7:47 am

dlevy wrote:
February 4th, 2020, 8:53 pm
Hi, Both the rear spring seat assemblies and the surface of the axle housing are pretty well worn to the point that there are grooves in the axle housing and when I put the rear spring seat assemblies (AA-5792 or AA-5793) around the axle housing, there is a lot of play; at least a 1/16" of motion in any direction.

Is this acceptable?
Is there a fix for this?
Dave
FYI - The two parts fit like rods fit to the crankshaft. I have reduced/eliminated the up/down movement of the seat assembly by resurfacing the mating surfaces. I cleaned the axle surface and seats and then tested the up/down movement several times while resurfacing. The seat must rotate forward/backward when bolted together solid. So, too much surface removal would require shims.
Regards, Neil Wilson
______________________________________
neil@aafords.com - use this email for contact
https://aafords.com/ - Ford Model AA Truck Club @ aafords.com

David R.
Posts: 117
Joined: August 17th, 2019, 1:52 pm
Body Type: Chassis
Model Year: 1930
Location: WV

Re: Play in Rear Spring Seat Assembly

Post by David R. » February 6th, 2020, 7:51 am

You can learn a lot lurking here on others threads. I haven’t gotten to rear axle yet, but will likely find similar scenario. Have a broken rear spring to deal with also.

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AAholic
Posts: 251
Joined: October 27th, 2010, 7:24 pm
Body Type: 88-A
Model Year: 1931
Location: N.E.Illinois

Re: Play in Rear Spring Seat Assembly

Post by AAholic » February 8th, 2020, 9:37 pm

Farrell In Vancouver wrote:
February 5th, 2020, 8:38 am
Keep in mind all the weight of the rear of the truck will wear the top clamp and top of the axle. I found a couple better fitting ones but still needed to build a couple areas up with weld and filed down to fit tighter. if there is still excessive play you can file the flats of the clamps down a bit to clamp tighter, but unless you are in the habit of "Getting Air" in your double A, I don't think you'll notice anything once she's down on the axle and wheels.
How's this for "getting air"?

https://www.youtube.com/watch?v=JB9RC9KIoHo
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air.jpeg
air.jpeg (61.01 KiB) Viewed 193 times

dlevy
Posts: 53
Joined: April 12th, 2016, 9:20 pm
Body Type: 82B
Model Year: 1931

Re: Play in Rear Spring Seat Assembly

Post by dlevy » February 9th, 2020, 9:19 pm

I don't plan on getting too much air, but I think I will mill down the flats to get a better fit.

It shouldn't be too hard.

Is there a specification for clearance once bolted together tight?

Thanks,
Dave

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Farrell In Vancouver
Posts: 313
Joined: February 23rd, 2011, 6:52 am
Body Type: Deck
Model Year: 1931
Location: Vancouver BC Canada

Re: Play in Rear Spring Seat Assembly

Post by Farrell In Vancouver » February 10th, 2020, 9:44 am

I think that was one of Dodge's first attempts at building a dirt plow for road building.
LOL

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