Just to clarify, are what you call tractors LAATs? or another model? I don't think my truck is a 15 cwt. It has 11 leaf springs on the front axle and 12 or 13 (depending if you call that very small leaf on top a spring) on the rear axle. Also, the differential and driveshaft is the same as the C30 LAAT in the thread "have Bofors will travel". So I think we can eliminate 15 cwt's as an option.
What do you think of the leaf spring supported cab? Is this common to all CMP's?
Do you know where any serial numbers may have been stamped on the frame?

Thanks for the help! Derek Heuring:cheers:

Let me try....
 

THe leaf spring cab support is typical of cab 13 CMP.....

It would seem that all CMPs came with a winch cross member although most did not have a winch. You might want to take a close look at the bolt holes in the cross member to see if any evidence of scoring done by bolts/nuts is evident. Also immediately behind the winch crossmember on each side of the frame towards the rear some evidence of the wich bearing support brackets may be evident. If originaly a CGT - gun tractor you should have some 1/2 inch curly pig tails welded on the passenger side of the frame as cable guides. Finally your transfer case should have two exiting drive shafts to the rear...the lower driver side one to the axle the other higher to the winch.

How much of the trcuk is left..... I seem to remember a rolling frame???? What size wheels/tires???? on the front axle underneath the engine and the same place on top of the rear axle should be a stamped gear ratio....clean the area carefully.... wipe with a stiff oily cloth.... should help highlight the stamping recessed in the cast iron..... (see picture)if it read 6 over 39 you have 15cwt axles if lower ratio you may have C30 axles.....but then the gear pumpkins may have been changed. The number of spring leaves you describe match my cab 11 15cwt 101" wheel base CMP.

Searching, researching and finding is half the fun...Good Luck

Bob C.
PS..... the system willnot let me post a picture previously posted therefore... see thread under "matching differencial"..sorry

Laats were a special body on a 30cwt truck chassis with a few other add ons.

Gun tractors with 101 in wheelbase were the Quads etc.

cheers
Cliff:salute:

Re: Let me try....
 

Thank you very much for the info! I should have mentioned that my CMP is 2WD not 4WD. The truck is complete except for a box, although some previous owner welded running boards and rear fenders. The spare tyre carrier is below the pintle hook between the frame rails and the tires are 9:00 X 16:00 with sling hubs for hoisting aboard ships etc. It is painted desert sand over greyish blue over green. I'll try to read the stampings in the diff. to get the ratio. One thing, the cab has a sliding door to the rear that the previous owner said was original. I have no way of knowing.
You're right, half the fun is searching and researching, fortunately my truck runs great so I get the other half of the fun too! Ya'll be good! Derek Heuring

Thanks for the info, please see my response to Mr. Carriere.:cheers:

Derek, LAATs were just one type of body style fitted to 134"wb trucks. Therefore, all C30's or C60S's are not necessarily an LAAT.

I think I read in an earlier post that your truck is a Chev? OK, let's look at that.
1. What type of steering knuckles are fitted to the front axle? If the Kingpin plate has 6 bolts on top, it is the "Large" ot 6 inch steering end. Your truck is probably based on a stretched C-GT or SHORTENED C60L.
2. If the Kingpin plate has 4 bolts ("Small" or 4 7/8ths inch steering ends), your truck could be a stretched C15A or a C30. (A small number of 60cwts had Small steering).
3. Now look on the diff 3rd member for any stamped, not cast numbers, that should indicate the gear ratio. If you find the numbers 6:39, this is a C15A diff. If you find 6:43, this is a C30, C60S/L or C-GT diff.
4. ALL Chev 101" chassis had the winch crossmember, MOST 134" chassis had the crossmember and SOME 158" chassis had the crossmember. Fords were more sparing with the winch crossmembers, only fitting them to trucks so specified in the contract. To find if the winch was fitted originally, look for other signs like evidence of roller fairleads at the rear crossmember, or cable "Pigtails" on the inside of the frame rails.
5. All 13 cab Fords and Chevs had the spring mount under the rear of the cab. (HUPs or other specials? Dunno!)
6. None of this is a surefire way to ID your truck as any components may have been swapped out in the 60 year life of your truck or during it's apparently professional rebuild.

with a sliding door to the rear it seems to me your CMP is not very original. Is the cab an early cab 11 or 12 or the later cab 13?
For example...headlights in the body or sitting on top of the front guards? Is the radiator accessable from the exterior without opening a bonnet (Hood)?

With the other mods you say it has it may also have had the front axle replaced with another to make it only 2 wheel drive.

some pics would certainly help a lot.

Cheers
Cliff:salute:

Thanks Hanno
 

Thanks for the heads-up... I just merged the threads for continuity.

yes now I remember the one. You are right Hanno we have been over this before and decided it was best left in it's 'hotrodded' state.

Cheers
Cliff:salute:

Whoa pardners, ya'll may have decided to leave it in it's "hotrodded" state, but I think the owner may have other plans! Further, we never did ID the truck, just a lot of conjecture on what it most likely is.

Now we're getting somewhere! After sanding a couple layers of paint off the differential I found this stamped into the 3rd member:

6 39 C883 R

The kingpin plate is the 4 bolt variety

There are some pigtails still attached inside the passenger side frame rail

So, my best guess is a stretched 15 cwt. What do you think Tony?

Re: more pics
 

Looks like, indeed, but is not - compare pics below.

http://www.mapleleafup.org/forums/at...p?postid=29306

http://www.surfacezero.com/g503/data...imm009_101.jpg