Looking for CMP 4x2 information.....

[Owen Evans]

Originally Posted by Bob Carriere

Looking for a picture of the front wheel brake drum and the beam axle and if possible the guts inside the brake drum........

I am trying to match against the Chev or GMC civilian axles of that period in the 1 1/2 to 3 ton range.

Thanks for your help.

Bob C.

Bob,

Some photos of the C15 4x2 setup here (posts 9 to 12):

http://www.mapleleafup.net/forums/sh...light=ignition

I think the C8 4x2 setup is slightly different. At least, different part numbers.

Owen.

[Bob Carriere]

I had assumed they were the same as you say David but the lead from Owen hit the bulleye dead one.... that is exactly the photographs I was looking for.

Convinced more than ever that the civvy one ton axles are similar or very much the same as the 1940 Chev one ton truck.

The main difference is that the C15 has a special adapter on the brake drum to accept the 8 bolts CMP 16 in. wheel/rim.

I will be pouring over that thread in great depth.

Thanks for your help.

Bob C.

[Bob Carriere]

Quite obvious that the brake system is civvy and identical to the HUP system so parts are available. Very narrow brake drums with narrow linings even at the rear.

May need to chat with Jaap and Alex.

So important to post our projects on the forum without using a 3rd party posting site.

Thanks again for digging it up for me.

Bob C

[Owen Evans]

Originally Posted by Bob Carriere

Quite obvious that the brake system is civvy and identical to the HUP system so parts are available. Very narrow brake drums with narrow linings even at the rear.

May need to chat with Jaap and Alex.

So important to post our projects on the forum without using a 3rd party posting site.

Thanks again for digging it up for me.

Bob C

I haven't split my front axle yet (it's on the 'jobs for 2019' list ), but here's some photos of the rear assembly. The C15 4x2 uses the same shoes front and rear. Also some pics of the wheel cylinders.

Owen.

[Alex van de Wetering]

Bob, Hopefully these will help. Let me know if you have any questions.

As mentioned by Owen, C8 and C15 are different, although the front wheel cylinder is the same.
C8 mostly uses 1/2ton parts for the front axle. Some of the hinge pins and clips in the brake system are the same as GMC CCKW.

Alex

[Bob Carriere]

Wonderful pictures.

A long shot.....are the spindle size of the front axle and the rear axle the same and therefore use the same bearing size?????

You confirm that the brakes ona C!% are infact Chevrolet andthe brakes on a C15A are A Ford design..............

Alex

I am working on a 1940 Civvy one ton or one and a half........has very narrow brake drums and would love to replace them with the complete C15 axles.

Thanks for your help. Hang in there it is not over.

Bob C

PS could almost conclude that the whole backing plate assembly is a bolt on...............

[Owen Evans]

Originally Posted by Bob Carriere

A long shot.....are the spindle size of the front axle and the rear axle the same and therefore use the same bearing size?????

Hmmm, not sure. I have yet to take my fronts apart. I suspect they are different; I'll be able to confirm that when the front axle is apart. Probably a couple of months time before I get to it though.

Owen.