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OK hopefully this will help someone in the future. 1) if u are going to run a MM winch use an OEM PS pump at IDLE. Napa pumps will work for non hydraulic winch trucks. 2) If you are replacing a pump Please be careful and ensure you never run out of fluid. 4-5 seconds of being dry can destroy...

Talked to MM and they said to use winch at idle!!!!!!!!!!!!! been revving motor up I guess that is what was blowing my pumps. Ill change pump again and report back.

I have 2 return lines going to pump. if I had them installed backwards would that cause issues? one from hydro boost and other from fan clutch control valve I think

Will u PLEASE pm me your number? I read a post back from 2006 where u had similar problem. the lines are plumbed correctly and I bled pump correctly. The pumps will work perfect until I use winch while under load..... then steering goes out and I get very little flow

Starting at post #4 Anyone have an idea. I must be missing something simple.

Ok I checked pressure from pump and it's roughly 900 psi with some leaks to tester. Winch will pull in out while not under load. Still no steering . Have bleed by turning wheels all day. I think it's air lock or steering box

Yes

I have been thru 3 pumps so far after I installed my MM winch. The pumps work great until I hook a load and then the winch stalls and bam nothing works. Oem and aftermarket napa pumps used. 30 dollars PayPal for the person that figures this nightmare out. As soon as I install a new pump...

Can the new style power steering pump be used with the V belt design(use pully from old pump). I don't want to convert everything to a serpentine belt system if I don't have to. Also if this will work what all do I need to convert it bracket and a reservoir I assume. Thanks