AA FRONT END LARGE DIAMETER KING PINS

AA Ford Discussion Group relating to the repair and restoration of your AA Ford.
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BERLIN FORD AA
Posts: 3
Joined: February 25th, 2019, 8:51 am
Body Type: Short Bed
Model Year: 1931

AA FRONT END LARGE DIAMETER KING PINS

Post by BERLIN FORD AA » April 27th, 2020, 7:29 pm

I'm looking to learn about the transition from .812 diameters front spindle king pins, bushings and thrust washers to 1.00 diameter. Was that done at a certain date in the AA production or was it dependent on some other factors? These are stamped FORD BB but I'm assuming they were used on the AA as well? I have four good king pins in hand but definitely need to locate 2 Thrust Bearings and possible a set of 4 King Pin bushings. Are there good sources for these components? Any helpful information or links to information sites would be appreciated.

David R.
Posts: 157
Joined: August 17th, 2019, 1:52 pm
Body Type: Chassis
Model Year: 1930
Location: WV

Re: AA FRONT END LARGE DIAMETER KING PINS

Post by David R. » April 28th, 2020, 7:33 pm

Snyders has the bushings, AA-3109-Q4. Really good quality with the proper spiral grease grooves. (Install in correct position). I found bearings at Grainger that look like proper dimensions. I was going to order them but I had an original set soaking in kerosene and once the petrified grease softened up they looked good. They were roller bearings not ball. I just finished doing this on my truck. I ordered some shims from Rock Auto. They were just a bit over sized but worked out ok. I just got my drag link and tie rods done today and one backing plate on.
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David R.
Posts: 157
Joined: August 17th, 2019, 1:52 pm
Body Type: Chassis
Model Year: 1930
Location: WV

Re: AA FRONT END LARGE DIAMETER KING PINS

Post by David R. » April 28th, 2020, 7:46 pm

I believe the change to the heavier front axle for the AA happened late in ‘29.

Bob C
Posts: 1320
Joined: April 24th, 2003, 11:50 am
Body Type: Mail truck, Stake tr
Model Year: 1931
Location: SO CAL

Re: AA FRONT END LARGE DIAMETER KING PINS

Post by Bob C » April 29th, 2020, 7:22 pm


BERLIN FORD AA
Posts: 3
Joined: February 25th, 2019, 8:51 am
Body Type: Short Bed
Model Year: 1931

Re: AA FRONT END LARGE DIAMETER KING PINS

Post by BERLIN FORD AA » May 1st, 2020, 10:00 am

Thank you David and Bob for your assistance.
I purchased a set of bearings from Grainger and they are a good fit and should work fine. The shell configuration is a bit different from the original and they are a ball instead of a roller bearing. I also purchased the three bearings that were posted on Ebay and will probably use those in my 1930 project truck and use the Grainger bearings to rebuild a Spindle / King Kin spare parts assembly that I have from a parts truck that was from June of 29. So I'm assuming that truck had a front axle replaced with the Heavier BB series at some point of it's life.

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