CMP front wheel bearing shims

[Jacques Reed]

Hi John,

I posted this on MLU Forum on their FB page this morning. Replying to Jordan.

From my F-15A Parts List Ford and GM are the same.

Here is one of mine: 3.00" OD, 2.75" ID

Hope this helps.

Cheers

[Jordan Baker]

Thanks all. My original question was on behalf of John.

[Tony Smith]

Originally Posted by Jacques Reed

Hi John,

I posted this on MLU Forum on their FB page this morning. Replying to Jordan.

Hope this helps.

Cheers

WHAT!! A secret "Shadow" MLU is out there?

[Hanno Spoelstra]

Originally Posted by Tony Smith

WHAT!! A secret "Shadow" MLU is out there?

Yes, read about the “why” here: http://www.mapleleafup.net/forums/sh...ad.php?t=24991

Keith Webb set up a CMP Facebook page long before MLU-FB, there’s also an Australian group on Blitzes and a myriad of other groups on all sorts of related subjects.

[Tony Smith]

Originally Posted by Hanno Spoelstra

Yes, read about the “why” here: http://www.mapleleafup.net/forums/sh...ad.php?t=24991

Well, I suppose at least they have a "Like" button!

[Bob Carriere]

For my personal edification.......

Not all models have the cast iron tea cup.....having seen it only once on/in a HUP front axle......

Dealing primarily in C15a...... what model/year etc. has the tea cup and why not others???? My front axle has the R-Zeppa U-joint.....others I have dismantled had the later simpler U-joints but no tea cup?????

Never too late to learn!!!!!

[Jacques Reed]

Hi Bob,

I also would like some edification.

My Ford F15-A Parts List shows 14 different Spacers in 0.005" increments.
Did GM do the same? I believe that part of the drive train was common to Ford and GM.

Next question is why? Was the manufacturing tolerances so large they needed such a large range. I know bearing preload is affected by small change in distance hence the shims but so many "Teacups". Maybe the "Mad Hatter" was in charge of design!

Even amongst the spacers I have two different designs but perhaps just 2 different foundry suppliers.

Disregard my previous comment about "B". probably just a foundry mark. Found a very faint stamp on one of the larger ones near the horizontal groove. "K" and when miked it is 2.110"
Another large one has what looks like a very faint "H" at the same location and measures 2.095". Both were hard to find. Never stop finding out new things about these trucks

Look forward to some info.

Cheers,

[Tony Smith]

My understanding in the difference in C11Q-1193-A,B, C, D, etc and C21Q-1193A is that the 1941 pattern used several different spacers in different sizes to suit, while 1942 used only one spacer of a standard size, but built that up with different shims.

I suppose someone thought that keeping supplies of multiple sized spacers was more of a production or logistical supply problem than having only one spacer and supplying shims for adjustment.