Info needed: Transfer case vent

[Paul Edwards]

Thank you for your prompt response guys.

Does anyone in the UK know a supplier?

Cheers,


Paul

[Richard Salter]

Hi Paul
Try HP Hydraulics newgate lane Fareham, Hants or Hypo hose in portsmout or Southampton

Thanks
Richard

[Paul Edwards]

Thanks Richard I'll try your source but before doing so and whilst searching the internet I came across these two photos of what appears to be images of transfer case but the vent differs, is there any reasoning behind this?

I then went on to look at my butchered vent which might suggest it was squashed to enable it to be fitted below the chassis cross member.

Any experts out there that might shed light. I'm thinking I may have the wrong vent.

Cheers,
Paul

1943-CMP-Chevrolet-Military-Truck-7.jpg index.jpg

[Grant Bowker]

A. It would be presumptuous for me to claim to be an expert
B. I suspect the simpler vent (a loose fitting cap pinned onto the vent tube) was a case of simplify to cut production time and cost while maintaining most (some?) of the dirt protection capacity of the damaged version you have
C. It is possible to use the vent caps sold for Chevrolet 235 CID valve covers to fabricate a passable replacement for the damaged transfer case vent. My process is: uncrimp the perimeter of the damaged dome to remove the perforated flat panel (and the filter medium if possible), braze/weld/solder the recovered flat panel to the recovered (or a new replacement) pipe that threads into the transfer case, reinstall the filter medium into the dome and crimp the edge onto the flat disc. If the filter medium isn't recoverable, consider usiing metal mesh from a pot scrubber (also sold as pest control https://www.leevalley.com/en-ca/shop...copper-blocker).

[Grant Bowker]

More images to show how the pipe core was facricated . Basically off the shelf black iron pipe nipple, cut in half to give two pre-threaded stubs, turned down slightly to let a drilled out nut be slid onto the pipe, brazed together then the disc drilled/cut/filed from flat sheet added.

[Grant Bowker]

more images

[Jordan Baker]

There were two different vents used.

Please see attached GM Service Information Bulletin B29, Item 64 from December 12,1942

The early one was simply a pipe with a cap on it held on by a cotter pin "Fig2". The second version was the air cleaner type "Fig2".

These were introduced into production starting at serial number 1844332070.