4. Checking Pressure Retaining Valve In Pressure Control Valve

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This pressure retaining valve (in the pressure control valve -2- ) can only be checked indirectly.

A fault exists if the clutch boost function does not last for an entire 24 hours, but the pressure retaining valve in the clutch slave cylinder (Test 3) and the pressure control valve -2- (Test 2) are functioning correctly.

Fig 1: Identifying Hydraulic Pump Components (Model Year 2010)

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

If the pressure retaining valve in the clutch slave cylinder is functioning correctly (Test 3), replace the hydraulic pump -1- (tandem pump/pressure control valve assembly -2- ).

→ 489819 REMOVING AND INSTALLING HYDRAULIC PUMP - PDK AND MANUAL TRANSMISSION