Porsche’s maintenance schedule requires flushing the PSD’s hydraulic fluid every two years. As with the brake and clutch systems, it’s a good idea to replace the fluid and bleed the system at least that often. The PSD system consists of several components:
wheel speed sensors (also used for ABS) ABS/PSD control unit hydraulic pump hydraulic pressure accumulator fluid reservoir lock solenoid valve slave cylinder. The hydraulic pump and the lock solenoid valve are normally under control of the PSD control unit or 9288 System Tester. In this procedure, they will be disconnected from the control unit and operated manually. 8. Clean the top of the reservoir and area with a rag and/or compressed air. This is very important. Take your time and make sure the reservoir and area above are clean. Make sure the inside of the fender is clean before you proceed.
Tags : porsche 928s, psd system, solenoid valve, clutch systems, speed sensors, wheel speed, fluid reservoir, hydraulic pump, slave cylinder, hydraulic pressure, system tester, hydraulic fluid, maintenance schedule, solenoid, fender
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