SR-22 STEERING — Power Steering 5. INSPECT FLOW CONTROL VALVE AND MEASURE SPRING (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 [4 or 5 kg/cm² (57 or 71 psi, 392 or 490 kPa)] into the opposite side. • Confirm that air does not come out from the end hole. If necessary, replace the valve with one stamped with the same letter on the rear housing. (d) Check the spring specification. Standard length 50.0 mm (1.969 in.) Minimum length 47.0 mm (1.850 in.) If the spring is not within specification, replace the spring. 6. IF NECESSARY REPLACE UNION SEAT (a) Using a screw extractor wrench, remove the union seat. (b) Install a new floating type union seat. NOTE: Only floating type parts are available.