Power Steering Pump Delivery Pressure, Checking

Special tools and workshop equipment required

-- Disconnect the intake hose from the reservoir.

Fig 1: Identifying Hose Clamps

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-- Remove the nuts -arrows- from the return line.

Fig 2: Identifying Power Steering Nuts

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-- Remove the nut -1- and the pressure line from the power steering pump.

Fig 3: Identifying Power Steering Line Bolt

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-- Mount the Power Steering Test Unit VAG1402 and the adapters as shown.

Fig 4: Identifying Power Steering Test Unit V.A.G 1402

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-- Remove Hose Clamps, up to 25 mm Dia.3094 from intake hose.

Fig 5: Identifying Hose Clamps

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Make sure the lever on the pressure gauge is in position -1-.

Fig 6: Identifying The Lever On The Pressure Gauge

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-- Start engine and fill hydraulic fluid in reservoir if necessary.

-- Turn the steering wheel approximately 10 times from stop to stop.

-- Check the delivery pressure.

Test Prerequisites

-- Move the shut-off valve lever on he pressure gauge to -2- and read the pressure.

Fig 7: Identifying Pressure Gauge And The Shut-Off Valve Lever

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CAUTION:

Let the engine run in idle and close the shut-off valve on the pressure gauge for not longer than five seconds (position -2-).

Specification for Delivery Pressure:

96-104 bar (1392.36-1508.39 psi)

-- If specified value is not attained, replace power steering pump, refer to VANE PUMP .

-- Remove the pressure gauge and adapter.

-- Check hydraulic fluid level and fill, if necessary, refer to POWER STEERING FLUID LEVEL, CHECKING .

-- Check the steering system for leaks, refer to STEERING, CHECKING FOR LEAKS .