Tire Pump outlet (frame mounted on CMP)
Following the discussion of how and where the outlet was mounted on MCP, I recently came across a through-frame outlet on a Chevrolet CMP frame that was being prepared for scrap. Don't cry, the frame really was beyond help. (heavily delaminated, shortened, non-standard wheelabse, bent, abused....)
The photos show where it was located on the CMP frame (between the left-hand step brackets) and the fitting. One end is shaped to take a standard 45 degree SAE (single) flare (see photo of mocked up 5/16" tube), the other is threaded similar to a schraeder tire valve stem. Although rusted, it looks to have been threaded both outside for a protective cap and inside to suit a valve core. I don't understand why they would have put a valve core here as any hose to inflate a tire would have had to incorporate a device to press the core open - otherwise the pressure from the pump would keep forcing the core closed so no air would flow. (and the core would restrict flow...)
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