I have a 93 d-250 Cummings. I rebuilt the entire front suspension and i noticed the upper control arm had been changed out with a set of incorrect cam adjustment washers. The correct size is right at 2", the size I just ordered and received are 1.7" Where can I get the correct size washers and bolts with the specialized square end for wrenching on?

 

I hold the end of the bolt with an open-end wrench. Its just 2 flats shaved off a round bolt isn't it?

I'm quite sure the cam washers are the same on all the D-series trucks. I always had extra used ones on hand, haven't had to buy new.

 

Yes, it is 2 flats shaved off a round bolt. This truck has over 600K miles on it and somewhere in it's life someone re-built the front end and either lost or damaged 2 of the original bolts and replaced them with cam washers that are 1/4" smaller diameter than the stock ones. I have 2 pics where I can show the difference in the bolts. I ordered a set from Parts Geek for a D250 Cummins Dodge truck with a 6k lb axle and they sent me the same ones that I already had and wanted to replace. The small cam washers will not allow adjustment for wheel alignment. I'm needing 2 bolts and 4 cam washers that are 2" in diameter (like the ones in the first photo). Any ideas where I can find these?


This is the original with the end of the bolt made to be held with adjustable wrench and making alignment easier.

This shows how the disc is too small to make contact with adjustment points. These are the new bolts I got that don't work.

 

Visually they look the same as what is on my truck. Perhaps try going to a Dodge dealer and ask to see a washer from 2003+ truck? If you are lucky it will be the same as what you are looking for.

 

Hold on a second.... are you sure the washer is supposed to take up the entire space? Seems to me it would bind up if it were.

 

Correct me if I am wrong, but I think it is supposed to bind. As the bolt head is turned, the washer then "binds" on the protrusion, which in turn changes the camber.
One thing I do when rotating bolts like this, is after setting the camber, rotate the bolt head slightly backwards, just enough to free up the bolt. If not, then that leaves the bolt at a very slight angle and the two washers slightly offset from one another. OK, I know, this small amount may not amount to anything, but I am picky.

 

What I mean is, if the washer fit tight, the bolt would have an orbital path when adjusted. Because its a slot (not simply a bigger hole to wallow around in) something has to give. Thus the washer is smaller to make it work.

I wish I weren't away from my trucks at the moment so I could properly solve this riddle.