1947 First CMP arriving to Argentina

[Bob Carriere]

Hi Mariano

Those trailers are massive ......... they were designed for very heavy loads....... massive springs and 8 wheels.......possibly with air actuated brakes..... I do not remember ever seeing such trailers used by the Canadian army during that time.

Can only speculate that they would be of US origin and rated at 10 to 20 tons.

One of the close up of the front tow bar shows a device for locking the front axle in a forward position only ....locking the front axle from turning. Possibly and aid for backing up????

Normally CMP trailers have a small manufacturer's tag rivetted to the frame near the front left side.

Bob C

[m606paz]

Bob
Many thanks for your quick reply!
The friend who took the pictures of the trailer, found in this trailer a trailer lights socket







Maybe US made trailer as you say?
Had seen before tow bar cast as owning this trailer?

[Bob Carriere]

Here is a picture of a similar trailer socket used on USA jeep trailers.... the same connector was used on CMP at the time.

I am convinced these heavy trailers were of USA origin.

I beleive both the trailer and the truck would have had the same connector and a four wire plug/cable stretched between the two.

Bob

[m606paz]

Originally Posted by Bob Carriere

Here is a picture of a similar trailer socket used on USA jeep trailers.... the same connector was used on CMP at the time.

I am convinced these heavy trailers were of USA origin.

I beleive both the trailer and the truck would have had the same connector and a four wire plug/cable stretched between the two.

Bob

Thanks you Bob!

CMP factory install these trailer socket?

[Grant Bowker]

One CMP I have did have a much smaller trailer lighting socket than the one above. The small socket had only 2 electrical contacts inside. This is reasonable if the return path is through the housing of the connector because CMP trailers usually did not use electric brakes. The only wiring would be for tail lights and brake light.
I believe I have a document showing the setup for CMP trailers but will not be able to look at it until tonight.

[m606paz]

Originally Posted by Grant Bowker

The small socket had only 2 electrical contacts inside.

Yes Grant!
Our LAAT have this small socket!

[motto (RIP)]

I'm sure that one of these rather unique trailers can be seen on a youtube video being used by U.S. army personnel during road construction.
I don't know how to post links but the video link is given on the G503 'Other MV's US' forum under the 'Trucks 1/2 ton thru 2 ton' heading and titled 'We all need roads to drive on'. the trailer can be seen at about 10 minutes 30.

David