SR–28 STEERING – POWER STEERING VANE PUMP POWER STEERING VANE PUMP INSPECTION AND REPLACEMENT NOTICE: When using a vise, do not overtighten it. 1. MEASURE OIL CLEARANCE BETWEEN VANE PUMP SHAFT AND BUSHING Using a micrometer and caliper gauge, measure the oil clearance. Oil clearance mm (in.) Standard 0.03–0.05 (0.0012–0.0020) Maximum 0.07 (0.0028) 2. INSPECT VANE PUMP ROTOR AND VANE PLATES (a) Using a micrometer, measure the height, thickness and length of the 10 vane plates. Minimum mm (in.) Height 8.6 (0.339) Thickness 1.40 (0.0551) Length 14.99 (0.5902) (b) Using a feeler gauge, measure the clearance between the rotor groove and plate. Clearance mm (in.) Maximum 0.035 (0.0014) If more than maximum, replace the 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 5 vane lengths with the following rotor and cam ring marks: Rotor and cam ring number Vane plate length mm (in.) None 14.999–15.001 (0.59051–0.59059) 1 14.997–14.999 (0.59043–0.59051) 2 14.995–14.997 (0.59035–0.59043) 3 14.993–14.995 (0.59027–0.59035) 4 14.991–14.993 (0.59020–0.59027) 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. Thickness Height Length Feeler Gauge Inscribed Mark Vane Length X8178 Z06060 Z8080 Z06061 R10262 SR2673 R07603