Toyota Hilux Surf 1993 Owner's Manual page 792

SR–60
STEERING – Power Steering (Power Steering Pump)
HINT: There are five vane lengths with the following ro–
tor and cam ring numbers:
Rotor and cam
ring number
5. INSPECT FLOW CONTROL VALVE
(a) Check the flow control valve for wear or damage.
(b) Apply fluid to the valve and check that it falls
smoothly into the valve hole by its own weight.
(c) Check the flow control valve for leakage. Close one
of the holes and apply compressed air [392 – 490
kPa (4 – 5 kgf/cm
side, and confirm that air does not come out from
the end hole.
If necessary, replace the valve with one having the same
letter as inscribed on the rear housing.
6. INSPECT FLOW CONTROL VALVE SPRING
Check that the spring is within specification.
Spring length: 35 – 37 mm (1.38 – 1.46 in.)
If the spring is not within specification, replace it.
Vane length
2
, 57 – 71 psi)] into the opposite
mm (in.)