Chevrolet coolant condensor can

[cordenj]

Recently acquired this brass Condensor Can, marked C-124238, from a long-term CMP collector.

Single pipes at each end. Has been painted olive green in the past, no other colour.

Were these fitted to early CMPs? Pre-dated the shorter steel versions?

Thanks

[Alex van de Wetering]

Were these fitted to early CMPs? Pre-dated the shorter steel versions?

John, as far as I know Cab 11's were never factory fitted with the condensor can, but you do see them on most, not all, Cab 12's delivered from the factory. So, I am guessing they were introduced somewhere in 1941. These are all the "normal" smaller size cans though.

Could your can be from an MCP truck maybe?....or something armoured.....Fox, Otter???

[Grant Bowker]

Based only on the stamped part number, I would not assume this to be a CMP part. The prefix "C" isn't isn't typical of either Ford (usually more than one letter and not normally C without another letter) or Chevrolet (normally no letters) in the period. Just looking at Chevrolet part numbers, they appear to have been assigned more or less sequentially in the order that the part was developed and by 1930 Chevrolet was already past 124238 in numbers so I doubt this would be a Chevrolet designed part developed for CMP use. I also don't see 124283 in any of the CMP parts books I checked.
Having said this, it is an opinion - not a guaranteed fact. I could be completely out to lunch on this and have missed somthing obvious.

[rob love]

I see 6 digit numbers prefixed like that all the time for early the US military items, prior to them adopting the FSN, and later developing that into the NSN. Perhaps it is a US military number.

[Jordan Baker]

Otters mid way through production were fitted with the standard CMP can. Early Otters didn’t but a modification kit was released to fit the cans in them.

[David Herbert]

I agree with Rob, I think that is an American part number. The 'C' refers to the size of the drawing of the part, 'A' being the biggest. It does not indicate a manufacturer or a revision.

David

[Grant Bowker]

Thanks to Rob and David - I went and dug out some of the stash of blueprints I received from Alex Blair's collection to look at their numbering. One drawing in particular caught my eye...
Drawing number C-321587 originally issued on paper marked as the Army Engineering Design Branch, crossed out and stamped as the Directorate Of Vehicle Development, Q.M. G. Branch, Dept. of National Defence has a reference to GM part 5820086 and depicts a "Flange-Transmission-Drive-Shaft". This drawing is dated 5-2-47.
Definite proof that the format of "C-######" was used to number drawings within the AEDB and QMG Branch, including automotive parts.

A very quick check in several CMP and GM armoured vehicle manuals didn't find 5820086. Hopefully someone else will have better luck finding the application of GM part 5820086...