King pin question

[Don/WI]

I recently bought a set of Model A king pins. They were not in an original box, but they are new and all the normal parts were included.
However, in addition to those parts, there is a set of king pins with the bushings. These king pins are just straight shafts, with a machined area for the locking pin and no hole down the center. The bushings are included on the shafts. They are 0.790" in diameter and 5.39" long. The bushings are pushed on the shafts and are 0.929" outside diameter x 1.20" long and have a part number 633672 with the letters EZ stamped on another area of the bushing. Can anyone identify these parts? There are no markings on the shafts. I appreciate any information. Thanks. Don/WI

[glenn in camino]

They might work with hydraulic brakes, or no brakes.

[Fordors]

1966 Moog information shows '40-'56 Chrysler products use something close, .795 dia. X 5 7/16 long. There is no exact match on the chart I have.

[briphaeton]

Here is a diagram showing the difference.
Brian

[Doug in NJ]

Originally Posted by briphaeton

Here is a diagram showing the difference.
Brian

Isn't that diagram wrong for '28-'31? It shows the hemisphere centered, and on 'A' kingpins, it isn't.

Doug

[Bob C]

Sponsored Links (Register now to hide all advertisements)

Originally Posted by Doug in NJ

Isn't that diagram wrong for '28-'31? It shows the hemisphere centered, and on 'A' kingpins, it isn't.

Doug

That's what I though and the locking pin slot in not in the
same place on the 32-34 either.

Bob

[Brianmc]

Hope this clears it up a little.
1928-31 pins have left & right sides also (not center cups as in picture) all .8125 dia

1928-31 1932-34 1935-36 1937-41 1942-48 1949-53
A-3111 B-3111 48-3111 78-3111 21A-3111 A9A-3111


To determine if your king pins are A or B style place the king pin on a flat surface, cup facing down, The shaft of the king pin will angle upward. From the end of the king pin shaft measure to the level surface. A - king pin measures about .700 while a B- king pin measure .950. The B king pin has a steeper angle but unless you have then to compare it is hard to determine. The 35/6 style, the king pin shaft is almost parallel to the surface.




axle dimension
Years
Kingpin
Width
Perch
Width
Perch
Height
Desc
1928-31
51 7/8
36 1/4
2 1/4
continous curve across
1932-36
51 3/4
36 3/8
2
ends curve more
1937-41
50 7/8
38 1/2
2 1/4

1942-48
52
40 5/8
2 1/4
1948 has holes for tube shocks