[Jacques Reed]

Hi Dave,

From my later edition 1943 F15A-01 parts manual there were three types listed:

C11Q-3337 "used for replacing Steering knuckle CO1Q-3340 on R.H. side only" (it had 1/2" studs)

C11Q 3339 "Knuckle steering and cups assembly used with 1/2" studs" (no side specified)

CO1Q 3340 "Knuckle steering and cups assembly L.H. side only. Used with 7/16" type studs only"

Looks like C11Q 3339 is interchangeable L-R but perhaps another MLU member can shed some more light on it.

I do know of the two stud size differences as I have both types but not on same truck.

Hope this is of some help.

Cheers,