Looking for CMP 4x2 information.....
 

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.

I think it's the same as the 1 1/2 ton

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. :confused

Owen.

Thank you, thank you, thank you.....
 

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.

Got some reading to do and pictures to see....
 

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.

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

Thanks Owen
 

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...............

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.

Belated response to this; the front axle was more stubborn than I thought!

Owen.

More photos....

Last lot for now. Shout if you need any other details....

Owen.

The elusive dream....... HUBs from a C15 .....
 

Thanks Owen....... 1798276.....matched to Hyatt barrel roller bearings. To my knowledge, based on the GM manuals at hand, that shallow adapter was CMP use only!!!!!!

Nothing like that on this side of the Pond unfortunately..... However...... I am following up on an external clue.

It seems that the bicycle ball bearings are in most front axle of Civvy trucks and this stayed until at least the early 50s.

The clue to the HD axle and roller bearings is the cover in the center to wheel.... inside the 5 big wheel nuts..... the regualr axle model has a stamped/formed grease cover that is recessed into the hub..... the end of the cap is hex shape like a large nut....... on the HD...... they have a flat or domed sheet metal cover held by 4 or 5 or 6 small 1/4 -20 bolts........ the hub of the C15 has 6 little bolts holding the domed cap.

I am pursuing a Maple Leaf truck circa 41/42 that has a sheet metal cover over the bearing with 4 bolts...... waiting to get it home to take it apart and confirm my assumption that it has roller bearings......

Thanks for all your help Owen.......Alex and others who have replied on other threads.

Here the snow and ice as almost vanished which will let me get my hands on the 1940 1 1/2 ton Civvy Chev from the back field.....just need a wek or so for the ground to dry up or risk sinking to the belly of the tractor.

In the absence of original C15 HUBs I will get adapter plates that will allow me to bolt CMP rims to the adapter plate which in turn will bolt on to the 5 or 10 bolts pattern of the GM civvy Hub.

Time to get out of the closet........
 

I found a whole bunch of parts vehicle all to the credit of MLU.

I have now acquired a C15 for the power train offered by a MLU member.

Found a 41/42 Mapleleaf HD with cab....no box from another MLU connection.

Found a rolling chassis of a 2 1/2 TON 46 Chev that even has the extra frame reinforcement plates........again an OMVA/MLU member....

.....and a tubular Ford front axle from another MLU source.

Now I think I have enough to build an early smaller 1940 Egypt crafted LRDG and a larger repro of the Canadian built 42 "waterfall" grill LRDG model.

Sadly the front fenders (4 of them) of my civilian 1940 Chev may be rusted beyond repairs and may have to buy used steel fenders from Ebay or use Canadian made fiberglass front fenders....the early model will have steel 1934-35 rear fenders. Fiber Glass vs steel will depend on whether or not I will need to widen the front fenders???

Thanks for all the help from MLU....comments, suggestions, old pictures of the real thing, etc ............

Will need to catalog what I have and sort out sets of parts for the different models. Meanwhile I need to replace a 25x40 dry equipment shed that collapsed on the last wet heavy snowfall.....and that will eat into my free time. Plans are for sea cans and covered span between two boxes.

Will continue to scrounge for fenders,running boards( may make my own), better 1940 hood and other tid bits....such as an vintage old style 25 to 35 fuel drum for mounting as a prop inside the cargo box........collect some more POW cans, helmets to hand here and there, ....... May look into importing a RHD steering box from Australia for the 42 conversion..... they apparently grow on trees there!!!!

With the advent of plastic containers you would be surprise how hard it is to find older steel fuel drums particularly those stamped Shell, Imperial Oil, Standard Petroleum /Oil. etc........ seems most of them are in Jamaica used as musical instruments..........

Meanwhile, I have acquired a few more 40 era GM parts manuals and will help anyone in search of specific information.

Pictures will be posted as I get my hot sweaty little hands on the treasures.

Cheers

Looking forward to seeing your progress on this one! :thup2:
Maybe you could knock a few of these up to use as props too:

http://www.mapleleafup.net/forums/sh...ad.php?t=25373

Good luck!
Owen.

Take a tour around the radar sites up north, it has been claimed there were millions of drums left up there that the eco-conscious would thank you for taking away..... It's not mosquito season up there yet...

Parts
 

Bob

You will also have to find a RHD clutch shaft .

I have a Chev truck (1939 and 40) NASCO parts book for the local GMH RHD assembled 1/2 to 3 Ton models, if you need a part number let me know . NASCO was the Aust. GM parts division: National Automotive Service Company.