Power Steering Pump Replacement
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
sounds like all ya need to do is rig up a line pressure gauge and a collection of shims and set it up like you want. I would go with the stock pressure, the other Hydraulic components are matched to that pressure. And the hoses are not rated for higher pressures. Will work fine that way
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Something Batman brought to my attention that I think could break the difference, is that I'm going to be using a Hydro. Won't that and all the extra lines take up any slack in the form of teh extra pressure? He seemed to think it'd be okay. Any thoughts?
Le Mans Master
Joined: Jul 2000
Posts: 6,001
Likes: 113
From: Saginaw Michigan
Your power steering pump puts out a controlled amount of fluid flow. Pressure is created by the pump when the gear valve and/or the hydraboost valve blocks that flow of oil. Every thing upstream from the controlling valve will see that pressure. The number of lines in the system will not diminish the pressure.
The maximum amount of pressure that you need is determined by stopping the car on cement, letting it idle, holding it with your foot brake, turn the steering wheel to full lock. If you can reach full lock with full power assist, you have sufficient pressure. This maneuver requires the most pressure to steer your car.
Jim
The maximum amount of pressure that you need is determined by stopping the car on cement, letting it idle, holding it with your foot brake, turn the steering wheel to full lock. If you can reach full lock with full power assist, you have sufficient pressure. This maneuver requires the most pressure to steer your car.
Jim
Le Mans Master
Joined: Jul 2000
Posts: 6,001
Likes: 113
From: Saginaw Michigan
A gage is the best way of measuring pump pressure. Make sure that the gage and connections are good to at least 1500 psi. Then turn the steering wheel to full lock. Hold at full lock for no more than 5 seconds at a time. You should be able to get a pressure reading in that time.
The other way to do it is to just add shims under the hex head screw on the flow control valve in the pump. Keep adding them until you run out of power assist at full lock. Make sure that you have deaireated your system properly before making a decision that you have full assist or not.
Foam in your power steering fluid can make your system appear to run out of assist. Air entrapped in the oil (foam) actually makes your fluid compressible.
Jim
The other way to do it is to just add shims under the hex head screw on the flow control valve in the pump. Keep adding them until you run out of power assist at full lock. Make sure that you have deaireated your system properly before making a decision that you have full assist or not.
Foam in your power steering fluid can make your system appear to run out of assist. Air entrapped in the oil (foam) actually makes your fluid compressible.
Jim
