Removing and Installing

Power steering pump for vehicles with 8-cylinder engine, removing and installing
Special tools and equipment required





- 3094 Hose clamps





- VAG 1331 Torque wrench

Removing
- Remove engine noise insulation.
- Set lock carrier to service position





- Unclip connector -arrow- from horn -1-.
- 2 - Lock carrier





- Insert a piece of wood with thickness a = 50 mm between longitudinal member -1- and lock carrier -2-.





- Clamp off suction and return hose using hose clamp 3094.





- Remove hex bolts -arrows- for securing air conditioning line -1-.
- Mark direction of rotation of ribbed belt.





- Turn tensioning roller to stop in direction of arrow.
- Remove ribbed V-belt.





- Unbolt -arrows- crankcase breather -1- from bracket -2-.
- Place oil tray under vehicle.





- Remove banjo bolt -1- and hex bolt -2-.
- Set pressure line -3- to side.
- Seal pressure line/hose with a plastic bag or similar.





- Remove hex bolt -A-.
- Unbolt power steering pump pulley -arrows B-.

Note:
^ When removing power steering pump pulley, observe the shim located behind it. It is important for the measurement and adjustment of the power steering pump.
^ Do not yet remove shim from power steering pump gear.

- Open hose clip -arrow C- and pull suction hose off power steering pump.





- Measure distance from front side of hub with shim -1- to power steering pump bracket -3- with depth gauge -2-.
- Note the measured value.





- Remove upper power steering pump securing bolt -arrow-.
- To do so, use an Allen key shortened to length -a-.
a = about 75 mm





- Press pulley -1- in direction of arrow and remove bolts -arrows-.





- Unclip connectors -1- from bracket.
- Remove bolts -arrows- from power steering pump.
- Take out pump.

Installing
- Fill power steering pump with hydraulic oil.
Fill pump with oil via suction union.
- Turn hub by hand until oil emits from pressure side.





- Install power steering pump in bracket and tighten bolts -arrows- to 23 Nm.





- Then tighten bolts -arrows- on front side of power steering pump to 23 Nm.





- Tighten upper power steering pump securing bolt -arrow- to 23 Nm.
- To do so, use an Allen key shortened to length -a-.
a = about 75 mm





Determining shim thickness
- Measure distance from front of hub without shim -1- to power steering pump bracket -3- with depth gauge -2-.
- Note the measured value.
- Now determine shim thickness using values measured before removing and after installing.





Example:





The following shims are available:
Shim application Refer to, Parts Supplier





- Install suction hose and install new hose clip -arrow C-.
- Bolt on vane pump pulley with torque setting 23 Nm -arrows B-.
- Screw in hex bolt -arrow A-.
- Install pressure line to vane pump and tighten banjo bolt.
- Remove hose clamp 3094 from suction and pressure lines.





- Turn tensioning roller to stop in direction of arrow.
- Install ribbed belt and turn tensioning roller opposite direction of arrow until ribbed belt is tensioned.

Note: When installing the ribbed belt make sure that the direction of rotation and seating in the pulley are correct.

Installation is continued in reverse sequence
- Check hydraulic oil level.
- Check steering system for leaks.
- Bleed steering system.