INSPECTION OF POWER STEERING
PUMP
1. MEASURE OIL CLEARANCE OF SHAFT AND BUSH-
ING
Using a micrometer and calipers, measure the oil clear-
ance.
Standard clearance: 0.01 = 0.03 mm
(0.0004 ± 0.0012 in.)
Maximum clearance: 0.07 mm (0.O028 in.)
If more than maximum, replace the entire power steering
pump.
2. INSPECT ROTOR AND VANE PLATES
(a) Using a micrometer, measure the height, thickness
and length of the vane plates.
Minimum height: 8.0 mm (0.315 in.)
Minimum thickness: 1.77 mm (0.0697 in.)
Minimum length: 14.97 mm (0.5894 in.)
(b) Using a feeler gauge, measure the clearance be-
tween the rotor groove and vane plate.
Maximum clearance: 0.03 mm (0.0012 in.)
If more than maximum, replace the vane plate and/or rotor
with one having the same mark stamped on the cam ring.
Inscribed mark: 1,2,3,4 or None
HINT: There are five vane lengths with the following ro-
tor and cam ring marks:
3. INSPECT FLOW CONTROL VALVE
(a) Coat the valve with power steering fluid and check
that it falls smoothly into the valve hole by its own
weight.
Rotor and cam
ring markVane lengthmm (in.)
± STEERINGPower Steering (Power Steering Pump)SR±37
