Modifying Stock Power Steering Pump To Increase Pressure (Hydraulic Winch)

[96r50]

The 96 FSM states that the minimum power steering pump pressure is 1350psi. So one could assume that regular pressures are slightly higher, and maybe meet the MileMarker minimum spec of 1500psi. Maybe. No mention of flow rate (GPM)

 

[wildsmith]

I ran an Ox winch from the PS pump on my 80 which is a rebadged Milemarker 10500lb for about 7 years and it went very slowly but always kept going even with a couple of other trucks tied to the back who's electric winch's had packed up because we had a long way to winch and it was floor pan deep bog all the way. For simplicity / reliability the PS pump is great just don't enter any winch speed dependent events

 

[Ebag333]

Anyone ever look at how hard the 100 or 200 series pumps would be to put in? Would they be any better/powerful?

 

[Filmpros]

Mile Marker, while they did not quote the Toyota spec specifically, told me with great confidence that pretty much all Power Steering Pumps are 1,500 PSI and 4gpm.

I can tell you this. I was pulling down trees with my Hydro MM and I was running it constantly .... non-stop ... and there seemed to be no lack of pulling power.

The 96 FSM states that the minimum power steering pump pressure is 1350psi. So one could assume that regular pressures are slightly higher, and maybe meet the MileMarker minimum spec of 1500psi. Maybe. No mention of flow rate (GPM)

 

[Toy12HT]

Hydraulic Pump Set Up

Sounds like some guys have tackled the problem of pump type and configuration in many different ways. Can anybody post some pics of their pump setup and discuss any installation problems as well as overcomming hot hydraulic oil.

Thanks

 

[number057]

X2 on the pictures!

 

[McGrinnan]

Ok so I am looking to modify my power steering to run 35's and a hydraulic winch. I guess my question is first off adding that what looks like a remote oil filter w/ cooler to the stock pump would increase it from 13-1500 psi and would work it? If I am completely wrong someone please let me know. I have a 80's model hilux with 39's and that thing is a bitch to turn I can only imagine how hard it would be in the lc.

 

[baldilocks]

the biggest problem I found with trying to increase the stock pumps pressure is the design itself. You'll want that pressure at idle and our pumps use vanes that seal by means of centrifugal force. Some pumps built like ours have small springs behind the vanes to create a better seal at lower RPMs.

Sourcing some of those springs would be the first upgrade that I would try to do to ensure you are getting the max out of the pump at low RPMs.

Unless you alter the pressure relief valve on the pump I don't think you will have any worries of burning out pumps or bursting hoses. Just be sure to add a good aux cooler, that factory one is junk even for 35" tires let alone a winch.

Put springs behind the vanes? Interesting. Have you or anyone you know of done this modification to an 80 series PS pump with success?

 

[landtank]

Not that I know of

 

[SNLC]

Seems far better to me to run a PTO box to a hydraulic pump. Then that runs the winch.

This is how all your dump trucks, tow trucks and so forth are done.

Cheers