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Home >> Audi >> 2011 >> Q7 Quattro (4LB) V6-3.0L DSL Turbo (CATA) >> Repair and Diagnosis >> Steering and Suspension >> Steering >> Power Steering >> Power Steering Pump >> Service and Repair >> V6 TDI

V6 TDI






Power Steering Pump

Assembly Overview I - Power Steering Pump for Engine, Generation I, without SCR

• Always replace seals.

• Do not reuse fluid you have drained.

• Only use hydraulic oil.






1 Power Steering Pump

• Fill with hydraulic oil before installation.

• Checking delivery pressure. Refer to => [ Power Steering Pump Delivery Pressure, Generation I without SCR, Checking ] Power Steering Pump Delivery Pressure, Generation I without SCR, Checking.

2 Belt Pulley

3 Bolt

• 23 Nm

4 Bracket

5 Bolt

• 23 Nm

6 Bolt

• 23 Nm

7 Banjo Bolt

• 35 Nm

8 Seal

• Quantity: 2

• Always replace.

9 Pressurized Line

• Note installed position.

10 Intake Hose

• Note installation position on reservoir. Refer to => [ Location of Hoses on
Reservoir and Reservoir Bracket to Body ] Lines and Hoses Assembly Overview.

• Note power steering pump location.

11 Marking

• On intake hose.

• Must align with marking on pump.

12 Spring Clamp

• Remove and install with Spring Type Clip Pliers (VAS 5024 A).

13 Marking

• On pump.

• Must align with marking on intake hose.

Installation Position of Intake Hose and Pressure Line at Pump






- Install intake hose - arrow A - so that markings - 1 - and - 2 - align.

- Install pressure line - arrow B - so that stop bar - 3 - rests against pump housing - 4 -.

Assembly Overview II - Power Steering Pump for Engine Generation I with SCR and Generation II

• Always replace seals.

• Do not reuse fluid you have drained.

• Only use hydraulic oil.






1 Power Steering Pump

• Fill with hydraulic oil before installation.

• Checking delivery pressure, refer to => [ Power Steering Pump Delivery Pressure, Generation I without SCR, Checking ] Power Steering Pump Delivery Pressure, Generation I without SCR, Checking.

2 Bolt

• 23 Nm

3 Belt Pulley

4 Bracket

5 Bolt

• 23 Nm

6 Bushing

• Drive the bushing back slightly to install the power steering pump.

7 Bolt

• 23 Nm

8 Bolt

• 9 Nm

9 Pressurized Line

• Insert the pressure line completely when installing.

10 Seal

• Always replace.

11 Intake Hose

• Note installation position on reservoir. Refer to => [ Location of Hoses on
Reservoir and Reservoir Bracket to Body ] Lines and Hoses Assembly Overview.

12 Marking

• On the intake hose

• Note power steering pump location: The P marking on the intake hose must line up with the X marking - arrow - on the power steering pump.

13 Spring Clamp

• Tension with spring clamp pliers (VAS 5024 A).

Power Steering Pump, Removing and Installing

Special tools, testers and auxiliary items required

• Hose clamps up to 25 mm diameter (3094)

• Torque wrench (V.A.G 1331)

• Spanner wrench (3212)

• Ring spanner insert AF 21 (T40087)

• Used Oil Collection and Extraction Device (V.A.G 1782)

• Spring type clip pliers (VAS 5024 A)

General Information

• The power steering pump is not designed to be serviced. If there are customer complaints, the cause must be determined using a pressure and leak test. If there is a malfunction, replace the pump.

• If fluid is low in reservoir, always check steering system for leaks.

• If there are leaks in the area of the line connections, the lines/connections must first be inspected for leaks, tightened as necessary and wiped dry.

• Pump is delivered without oil. Therefore, hydraulic oil must be filled before installation and turned by hand. Otherwise, noises when driving or damage to pump may occur.

Removing

- With vehicles with air suspension, place vehicle on hoist. Refer to => [ Positioning Vehicle on Hoist and Wheels ] Positioning Vehicle on Hoist and Wheels.

- Extract hydraulic oil from reservoir using (V.A.G 1782).

- Carefully pull engine cover off from 4 retaining pins - arrows -.






- Remove air guide hose - arrows -.






Applies to Engine, Generation I with SCR and Generation II






- Loosen the air guide pipe - 4 - (if equipped) in the center and move it upward. Remove the bolt - 1 - and - 2 - and loosen the bolt - 3 -.

• Be sure not to damage any parts when moving the air guide pipe - 4 -.

Applies to All






- Mark ribbed belt running direction

- Release the tension on the ribbed belt and remove it from the power steering pump belt pulley.

- Remove bolts - arrows -. Counterhold belt pulley with (3212) when doing so.

Applies to Engine, Generation I without SCR






- Lay several cloths under the power steering pump and hydraulic pipes.

- Pinch off intake hose using (3094) and remove from power steering pump.

- Remove banjo bolt - 1 -.

- Remove bolts - 1 -.






- Remove the bolt - 2 - and remove the power steering pump - 3 -.

Applies to Engine, Generation I with SCR and Generation II






- Lay several cloths under the power steering pump and hydraulic pipes.

- Clamp the intake hose using (3094) and remove from power steering pump.

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

- Remove bolts - 1 -.






- Remove the bolt - 2 - and remove the power steering pump - 3 -.

Installing

Installation is performed in the reverse order of removal. Observe the following when doing so:

• Clean oiled places in engine compartment.

• Always replace seals.

• Before installing new pump on intake side, fill hydraulic oil and screw in by hand until oil escapes on pressure side.

• Charge air system hose supports and hoses must be free of oil and grease before installation.

• Secure all hose connections with hose clamps appropriate to the model.

- Turn the hub by hand until oil runs out of the pressure side.

- To assist attachment of pump, drive threaded sleeve for rear bolt back slightly in bracket.

- Install the power steering pump.

- Tighten the front bolts.

- Tighten the rear bolts.

- Screw belt pulley onto pump.

- Secure the intake hose. Note location of suction hose on power steering pump.

- Use a new seal => [ (Item 8) Seal ] or o-ring => [ (Item 10) Seal ].

- Tighten the pressure line threaded connector.

Tightening specifications, power steering pump for engine, generation I, without SCR.

Tightening specifications, power steering pump for engine generation I with SCR and generation II.

- Clean oiled places in engine compartment.

- Install ribbed belt and check alignment of ribbed belt.

- Top off hydraulic oil.

- Check power steering fluid level. Refer to => [ Power Steering, Checking Hydraulic Oil Level ] .

- Bleed steering system. Refer to => [ Steering System, Bleeding after Reconstructing ] .

- Check the steering system for leaks. Refer to => [ Steering System, Checking for Leaks ] Steering System, Checking For Leaks.






- On vehicles with air suspension, position vehicle on wheels. Refer to => [ Positioning Vehicle on Hoist and Wheels ] Positioning Vehicle on Hoist and Wheels.

• When installing ribbed belt, ensure it is correctly seated in ribbed belt pulley.

1 Belt pulley - generator
2 Idler pulley
3 Idler pulley
4 Belt pulley - coolant pump
5 Belt pulley - power steering pump
6 Ribbed belt pulley - A/C compressor
7 Tensioner pulley
8 Belt pulley - crankshaft

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