Chevrolet 1533X2 30-cwt trucks

[Grant Bowker]

Some of the filter/intakes look a lot like engine valve cover vents used on later Chevrolets if you need to make one up...

[Charlie Down]

Hi Grant,
Thanks for the info. I've been searching the old postings and have narrowed it down to a fitted filter on Chevrolet compressors and the inverted 'v' inlet on Ford compressors.

http://www.mapleleafup.net/forums/sh...ght=compressor

I think the attached photo of a transmission breather for CMP could be a close relative of the part, but it would be nice to have something a bit more definite!

[Colin Alford]

Charlie,

The Chevrolet tire pumps started with the ‘inverted v’ air intakes, then transitioned to the air cleaner. The 1543X2 parts list indicates that the air cleaner was fitted to “after jobs”, but there is no indication of an exact serial number.

Attached are 4 images. The first two are from the 1543X2 parts list (as discussed before, Chevrolet used many “standard” illustrations in their parts manuals and while this shows the Control rod which is actuated through the floor of a CMP, I am quite positive that this is incorrect for the 1543X2 and 1533X2). The third and fourth images are from the CMP Parts lists C8A-04, and C30-03, to illustrate that the tire pump air cleaner is the same as the transfer case air cleaner. On both the C8A, and C30 the transfer case air cleaner was added in 1942, but i do not know if this would have coincided with air cleaners being added to the tire pump.

Colin

[Charlie Down]

Thanks Colin for clearing that up.
From what you say the 1533X2's would most likely have had the inverted 'V' inlet as they were produced in 1941. Later production vehicles would have had the filter if they had been ordered (the LRDG wanted to order another 200 trucks in late 1942 but by then it was clear operations in North Africa were winding down, so no authourity was given), with the filter being the same part as the Transfer case air cleaner. Trucks could possibly have been upgraded with filter system, but LRDG documents don't mention any other factory upgrades being retrofitted and it seems unlikely for such a small order in faraway Egypt that it was thought about. Now someone will prove me wrong!
So the attached photo would be the most likely set up (with push/pull rod controls) for the LRDG 1533X2 as delivered.