Power Steering Pump Specifications

[Vegas Runner]

Does anyoone know what the Power Steering Specification (Gallons per Minute and PSI) are for the 2003 4runner with a V8?

[Vegas Runner]

Somebody must have this information...

I am considering a hydraulic winch and need to know if I have to look at an upgraded steering pump.

[bulldog]

Sorry can't help you with that one.

[Vegas Runner]

I cant believe this information is not available. If anyone has any information regarding the GPM and PSI ratings on the PS pump I am most interested.

[bulldog]

OK, OK, I searched through the manuals again.

The steering pressure minimum indicated for a full lock turn is 1209PSI, engine idling. They also list 71 PSI for when the ehgine is idling, but no input on the steering wheel centered.

No other info was availible. Adding a oil cooler might be adviseable if you want to use the circuit to do winching work (unless the winch itself can do the cooling).

[Vegas Runner]

OK, OK, I searched through the manuals again.

The steering pressure minimum indicated for a full lock turn is 1209PSI, engine idling. They also list 71 PSI for when the ehgine is idling, but no input on the steering wheel centered.

No other info was availible. Adding a oil cooler might be adviseable if you want to use the circuit to do winching work (unless the winch itself can do the cooling).


Thanks, this is very useful information to me. That should be good for the winch for pressure. They specify 1500 PSI but 1200 will give me 80%; on a 12,000 lb winch it will give me ~9,600 lbs of pull. I still need the GPM to determine what the pull rate will be. The numbers for pull rate mile marker gives are at 3.5GPM. I suspect the PS pump is more like 2.7GPM but that should be ok too.


If anyone has the GPM numbers for the PS pump please post up.

Thanks again Andries! I will likely add a cooler if I go this route.

[onfly]

I dont have the flow rate , BUT psi is around 1200 psi at idle. (Valve closed -meaning - When using sst to check pressure, flow valve on tool is shut to give idle pressure then released so fluid pressure does not overheat when checking)


Here is the service specs for 03 V8. (but IC you already have it)



Juan

[Vegas Runner]

Thanks for the PDF. I appreciate you looking for me.

[bulldog]

Thanks, this is very useful information to me. That should be good for the winch for pressure. They specify 1500 PSI but 1200 will give me 80%; on a 12,000 lb winch it will give me ~9,600 lbs of pull. I still need the GPM to determine what the pull rate will be. The numbers for pull rate mile marker gives are at 3.5GPM. I suspect the PS pump is more like 2.7GPM but that should be ok too.


If anyone has the GPM numbers for the PS pump please post up.

Thanks again Andries! I will likely add a cooler if I go this route.
They didn't list any specs for GPM. However the PSI listed is the minimum pressure, so you will likely see more from the pump. It was also listed as the minimum pressure with the SST and gauge valve open and steering wheel turned full lock.

More than likely the pump should give you enough oomph for the winch. Enjoy.

I prefer the electric winch though, easier to hook up and can run for a bit with the engine stalled. Besides you have that fancy 12/24V system now with a big aux battery :D

[Vegas Runner]

They didn't list any specs for GPM. However the PSI listed is the minimum pressure, so you will likely see more from the pump. It was also listed as the minimum pressure with the SST and gauge valve open and steering wheel turned full lock.

More than likely the pump should give you enough oomph for the winch. Enjoy.

I prefer the electric winch though, easier to hook up and can run for a bit with the engine stalled. Besides you have that fancy 12/24V system now with a big aux battery :D

The hydraulic appeals to me for a number of reasons:

1.) No issue running for long durations - does not over heat. I do pulls that can run an hour.

2.) 2 speed gear box - I pull very light loads over long distances. The high gear has speeds over 30ft per minute.

3.) It is something a bit different

4.) Does not generate heat that could damage synthetic winch line


I am not concerned about running the winch with the engine stalled. I believe that a winch is most useful in pulling others out. On those rare occasions where I self winch it is relatively unlikely I will be unable to run my motor


I am also building an electric capstan winch so I will have an electric winch also. That will allow me to use my electric system. : )