Power Steering Pump, Reservoir, Hydraulic Lines

Power steering pump, reservoir, hydraulic lines

Delivery pressure, checking





Special tools and equipment
^ 3094 Hose clamps
^ VAG 1402 Power steering test unit
^ VAG 1402/1 A Adapter
^ VAG 1402/2 Adapter
^ VAG 1402/6 Hose from adapter set
^ VAS 5024 Assembly pliers





Vehicles with power steering pumps in lower section
- Clamp return hose using hose clamp 3094.
- Remove noise insulation panel.





- Clamp suction hose using hose clamp 3094.
- Place drip tray underneath.
- Disconnect bracket for pump pressure line from cylinder block.
- Disconnect pump pressure line.





- Install adapter -1- (use seal).
1. VAG 1402/1A
2. VAG 1402/6 Hose from adapter set




- Connect pressure gauge VAG 1402.
1. VAG 1402 Pressure gauge
2. VAG 1402/6 Adapter hose
3. Banjo bolt
4. Pressure hose banjo union
5. VAG 1402/2 Adapter set
6. Hose from VAG 1402 pressure gauge
- Remove hose clamps 3094 from suction and return hoses.
- Start engine and if necessary add fluid to reservoir.
- Turn steering wheel approx.10 times from lock-to-lock.
- Check delivery pressure.

Test requirements:
^ Ribbed belt and ribbed belt tension OK
^ System not leaking
^ Hoses/lines are not kinked or restricted
- With engine running at idle speed. Close cut-off valve (not longer than 5 seconds) and read off pressure.

Specifications
- Gasoline engines: 85 - 95 bar (1233 - 1378 psi)
- Diesel engines: 96 - 105 bar (1392 - 1523 psi)

Notes:
^ If the reading is higher or lower than specified replace power steering pump.
^ Removing and installing power steering pump, vehicles with power steering pump in lower section, Refer to Power Steering Pump, Service and Repair
^ If power steering fluid reservoir level is low, then check steering system for leaks.
^ For leaks at the pinion first check the hoses/line connections for leaks and if necessary tighten and wipe dry.
^ If the pinion seal or the rack seals in steering gear housing are leaking, replace the steering gear.
^ To check the rack seals: loosen the clamp on the boot and push boot to one side.





Vehicles with power steering pump in upper section
- Remove engine cover -arrows-.





- Clamp return hose with hose clamp 3094.





- Clamp suction hose using hose clamp 3094.
- Place drip tray underneath.
- Disconnect pump pressure line.