Power Steering Pump Preload Inspection (page 3 of 3)

A Flow Control Valve

4. Slip the flow control valve back in the pump and check that it moves in and out smoothly.

If OK, go on to next step; if not, replace the flow control valve.

A Identification mark

• The original flow control valve was selected for a precise fit in the pump housing bore, so make sure the new one has the same identification mark.
• Two sizes of valve are available,
  Identification Mark A = 15.995 – 16.000mm
  Without identification = 16.000 – 16.006mm

A Flow Control Valve
B Power steering return hose

5. Attach the power steering return hose to the end of the flow control valve as shown.

A Air pressure
B Power steering fluid

6. Then submerge the flow control valve in a container of power steering fluid, and blow gently through the hose. If air bubbles leak through the flow control valve, replace or repair it as follows.

Note: Do not use compressed air.