Power Steering Pump Delivery Pressure, Checking

Special Tools And Workshop Equipment Required

Hose Clamps - Up To 25 mm:3094
Power Steering Test Unit:VAG1402
Power Steering Test Unit - Adapter:VAG1402/2
Power Steering Test Unit - Adapter Hose:VAG1402/6
Power Steering Test Unit - Adapter Set:VAG1402/17

-- Remove the design cover carefully from the four retaining pins in direction of -arrows-.

Fig 1: Identifying Removal Of Engine Cover From 4 Ball Studs -Arrow-

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the air guide hose -1-.

Fig 2: Air Guide Hose

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Clamp off the suction hose using Hose Clamps - Up To 25mm:3094 .

Fig 3: Clamp Off Intake Hose Using Hose Clamp 3094.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

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

Fig 4: Mount The Power Steering Test Unit V.A.G 1402 And The Adapters As Illustrated.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Power Steering Test Unit:VAG1402
Power Steering Test Unit - Adapter Hose:VAG1402/6
Bolt
Pressure Line
Power Steering Test Unit - Adapter Set - Adapter 2:VAG1402/17-2 ¹⁾ with Power Steering Test Unit - Adapter Set - Adapter 3:VAG1402/17-3
Power Steering Pump
Power Steering Test Unit - Adapter Set -Adapter 1:VAG1402/17-1 with Power Steering Test Unit - Adapter Set - Adapter 3:VAG1402/17-3

¹⁾ Replace the Power Steering Test Unit - Adapter Set -Adapter 1:VAG1402/17-1 seal if it is damaged or leaking. Refer to the Parts Information.

NOTE:

Position the Power Steering Test Unit - Adapter Set - Adapter 3:VAG1402/17-3 on the Power Steering Test Unit - Adapter Set -Adapter 1:VAG1402/17-1 so that the hose from the Power Steering Test Unit - Adapter Hose:VAG1402/6 does not touch the pulley and/or ribbed belt.

Tighten the union nuts on the Power Steering Test Unit - Adapter Set - Adapter 3:VAG1402/17-3 and the Power Steering Test Unit - Adapter Hose:VAG1402/6 hose hand-tight with an open-end wrench.

-- Remove the Hose Clamps - Up To 25mm:3094 from the intake hose.

Make sure that lever on pressure gauge stands in position -2-.

Fig 5: Ensuring Lever On Pressure Gauge Stands In Open/Closed Position

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Install the air guide hose -1-.

Fig 6: Air Guide Hose

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- 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

Ribbed belt/ribbed belt tension OK
Sealing of system
Hoses/lines are not kinked or constricted

-- With engine at idle speed, close stopcock, not more than five seconds (position -1-) and read pressure.

Fig 7: Ensuring Lever On Pressure Gauge Stands In Open/Closed Position

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Specification for Delivery Pressure:

120 to 128 bar (1740 to 1856.48)

If specified value is not obtained, replace power steering pump. Refer to POWER STEERING PUMP, REMOVING AND INSTALLING .

-- Remove the pressure gauge and adapter.

-- Bleed steering system. Refer to POWER STEERING SYSTEM, BLEEDING .

-- Check The Hydraulic Fluid Level And Fill If Necessary. Refer to the appropriate service information.

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