AA FRONT END LARGE DIAMETER KING PINS
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- Posts: 4
- Joined: February 25th, 2019, 8:51 am
- Body Type: Short Bed
- Model Year: 1931
AA FRONT END LARGE DIAMETER KING PINS
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.
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- Posts: 260
- Joined: August 17th, 2019, 1:52 pm
- Body Type: Chassis
- Model Year: 1930
- Location: WV
Re: AA FRONT END LARGE DIAMETER KING PINS
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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- Posts: 260
- Joined: August 17th, 2019, 1:52 pm
- Body Type: Chassis
- Model Year: 1930
- Location: WV
Re: AA FRONT END LARGE DIAMETER KING PINS
I believe the change to the heavier front axle for the AA happened late in ‘29.
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- Posts: 1446
- 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
Here is a good deal on bearings. https://www.ebay.com/itm/FORD-BB-3123-A ... 4B&vxp=mtr
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- Posts: 4
- Joined: February 25th, 2019, 8:51 am
- Body Type: Short Bed
- Model Year: 1931
Re: AA FRONT END LARGE DIAMETER KING PINS
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.
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.
Re: AA FRONT END LARGE DIAMETER KING PINS
Howdy boys, I too am looking for king pin shims for an early BB I am working on. The axle has "AA" on it, and the pins are 1", so the shims you spoke of would be what I am after. Rock Auto is a little difficult if you have a question, since they won't answer the phone. We are all expected to be parts store professionals who always know what we're after! I don't fall into that category! I'll give them a try though. Thanks for the info!