M109 rebirth into M48A2

[Mullaney]

@Mullaney - that's exactly what I had in mind. I'd be curious what the rear winch hydraulic pump specs are for the 936, I'm thinking the mid mount winch will be a 20K load max. I'm using another members research and work here on a hydraulic conversion for the front winch on his truck (Mudguppy). He did a great conversion to his truck (Cummins/NV4500 and the winch).

He found for the front 10k winch, to maintain current line speed and 10k capacity he needed 24 GPM and 2000 PSI.

Am I wrong in guessing a 20K winch with a 20K load would require a higher pressure and/or higher GPM?

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Yes Sir. The thing to remember with hydraulics is that flow (GPM) controls speed more than pressure

Eaton Vickers Hydraulic Vane Pump (9M-81 NSN 4320-01-521-6943 drives the the winches on the M936. One 45000#, a 20,000# on the boom, and the front winch (on a separate pump) is a 10,000#. Engage the PTO and two are active... Engage the transmission pump and it turns on.

Another option would be Eaton vickers 11c20 pump.

Also the pump on wrecker is 2500 psi and 20 gpm