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https://www.steelsoldiers.com/showthread.php?29773-Garwood-Winch-Specs This thread just made my day guys.

@ Porkysplace do you have one of these winches? If so, how big around (DIA) is the drum when no cable is on it?

*motor not pump sorry

Yes for sure porkysplace! That's why I'm likely going to be using a completely different pump. All I need to know is 1) the empty spool diameter, & 2) the reduction ratio with in the winch. These two pieces of information combined with the fact that my MAX pull is 20K will be how I back figure...

@ porkysplace, absolutely! That's why I can't use the same pump, I just need to determine what input torque I need. All I need is 1) the spool / bare drum diameter and 2) gear ratio.

https://www.steelsoldiers.com/showthread.php?104804-M939-winch-system-specs-for-hydraulic-pump Is the standard hydraulic pressure 1750 for the 5 ton trucks? I was planning on using this in a 3000 psi application so I may be forced to get an aftermarket pump.

Thanks @ gimpyrobb. Is there an easy way to ID the winch off of the 939 series, just look for the hydraulic motor I suppose? I definitely want the level wind feature.

Is this a typo? 2500 GPM @ 3k psi is >4300 HP.

Another question: do these winches come with a cable guide that moves along the spool in sync with the drum so it spools evenly? Jack

Hello, I'm pretty green in terms of the 5-ton trucks, but after some limited research, I've concluded some of them came equipped with a 20k Garwood winch. Was supposed to be driven off of the PTO if I'm not mistaken, I plan to buy one, and power it with a low-speed high torque hydraulic pump...

Does anyone know what the ratio is for the 20,000 lb Garwood Winches?