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If your engine or transmission takes a dump, you could still winch yourself out with a 24vdc winch...until your batteries go dead.

D Does it come with another axle to support it? hahahahaha

Most motors have a industry standard flange sizes. you won't have any problem finding one for under 300$.

some hydraulic systems only have 1800-2000 psi Pumps, so some motors are designed to have their peak torque (psi) at that pressure. It doesn't protect the winch. if you put a 2000 psi motor with 1000fbs torque, the winch isn't protected. I wouldn't begin to worry too much about heat build up...

I built my own dump mechanism. If I were you, I'd get one off of CL. I would get at least a 10-12K pound capacity...minimum. Mine is made from telescoping rams that I had and really needs 3000 psi to dump a few tons. Dont undersize it.

since you haven't bought the winch motor yet, get one that operates at 3000 psi. they are more available than 2000 psi anyways. the cost is the same, and often lower. BTW, as you know, the higher psi gives the motor more torque, if its rated for 3000.

https://www.surpluscenter.com/Hydraulics/Hydraulic-Motors/Low-Speed-High-Torque-Hydraulic-Motors/

so before you can size the pump, you need to know the torque required, which is determined on the winch reduction gear ratio and Physics (drum size and load) and the speed which you would like the drum to travel. the speed can be controlled by a flow control valve. the pressure (2000-3000psi)...

theres something real wrong here...( it could be me) but If you have a motor with a 17.9ci/rev displacement, at 3.5 gpm, your speed would only be 45 rpms. Also you had better find out Exactly how many rpm's you require for your drum speed, and what the reduction ratio is, so you can figure out...

I know nothing about military PTO and Hydraulic winches. I do know that you must have a "braking" system somewhere on it because most hydraulic motors will not hold a load. you can lock out both lines and the drain on a motor and if you're hoisting something, it will drop back down. So you had...

why would you need a variable displacement pump to run both your hoist and winch? Is flow a issue?

I bought a A2C for 10K, and put a 1100$ Sherpa winch on it, but I'd rather have a A3....It wasn't in my price range and way too far to recover.

I removed the air conditioning pump and put the hydraulic pump in its place on my 460 Ford. Hydraulic motors need a whole lot more gpm than cylinders.....unless you're not in a hurry. hahaha

I added hydraulics on my ford truck to operate a 4 way snow plow and a dump bed using this type of pump. I think my gpm is a little higher and unnecessary...