M939 winch system specs for hydraulic pump,

[hot rod deuce]

Hey guys, I'm working on two M925 projects, a water truck and a dump. I'm wondering if any one knows the specs on the hydraulic pump or PTO? Looking for something as simple as GPM at X engine RPM, or even pump cubic inches/displacement and I could figure the rest. Also looking for system pressure relief valve setting.

If no one has the info I will dive in and figure it out so any one wanting to run a hydraulic gizmo would have the info.

Thanks

 

[jcappeljr]

I dont know the specs,But I have a complete hyd.system for sale from a 939 series truck.

 

[jdknech]

I am under the impression that at gov. speed (2100 rpm) the pump flows 25gpm... i could be wrong though... contact M16TY, he has all the specs for the M939A0/A1 Hyd. system..

 

[m16ty]

Let me give it a shot off the top of my head.

I think the pump is rated at 14gpm @ 1,000 rpm. The PTO turns right at 2,000 rpm at governed speed so that gives you right at 24-26gpm. This is all going by memory as it been awhile and the spec sheet is at work. I can give you concrete figures after I look at the sheet.

You can also do a google search for "vickers vane pump specs" and it will tell you how to decipher the model number.

 

[m16ty]

Here's a link that tells you how to read the numbers- http://www.google.com/url?sa=t&rct=...Re2yZRNGP0EpY2Q&bvm=bv.44158598,d.eWU&cad=rja

You won't find the military pump listed but it will show you how to decipher the numbers on the pump.

 

[hot rod deuce]

Got it.

Thanks!

 

[Hank Elrod]

How much do you want for the hydraulic system?

 

[Speedzilla]

Anyone know what kind of PSI the pump produces?

 

[2old2humps]

the relief is preset about 1750 psi, but can be shimed.

 

[74M35A2]

.