audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

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Removing and installing power steering pump (vehicles with 8-cyl. petrol engine with timing chain) > < Removing and installing power steering pump (vehicles with 6-cyl. 2.5 ltr. TDI engine)

A4 Mk2

Removing and installing power steering pump (vehicles with 6-cyl. 2.7 ltr. and 3.0 ltr. TDI common rail engine)
   
Removing and installing power steering pump (vehicles with 6-cyl. 2.7 ltr. and 3.0 ltr. TDI common rail engine)
Special tools and workshop equipment required
t  Hose clamps up to 25 mm Ø -3094-
t  Torque wrench -V.A.G 1331-
t  Torque wrench -V.A.G 1332-
t  Oil extractor -V.A.G 1358 A- with oil extractor probe -V.A.G 1358 A/1-

   
t  Pin wrench -3212-
General notes
There is no provision for repairing the power steering pump. If problems are reported, trace the fault by means of a pressure test and a leakage test. Renew the power steering pump if there is a fault.
t  Always check steering system for leaks if fluid level in reservoir is low.
t  If leakage is visible at the pipe connections first tighten connections and wipe dry, then check for leaks again.
t  The power steering pump is supplied without fluid filling. Prior to installation, the pump must therefore always be filled with hydraulic fluid and rotated by hand. Otherwise, there is a possibility of pump damage or noise while driving.
Removing
–  Extract hydraulic fluid from reservoir using oil extractor -V.A.G 1358 A- or used oil collection and extraction unit -V.A.G 1782-.
–  Remove noise insulation → Rep. Gr.50.
–  Detach engine cover panel.
–  Remove bumper → Rep. Gr.63.
–  Set lock carrier to service position → Rep. Gr.50.
–  Remove poly V-belt → Rep. Gr.13.
  Note
Before removing poly V-belt, mark direction of rotation. A used belt can break if it runs in the opposite direction. Ensure that the belt is properly seated in the pulleys when installing.
  W00-0462
–  Remove bolts -arrows-.
–  Unbolt power steering pump pulley. Use pin wrench -3212- to counterhold pulley.
  A10-0340
–  Open hose clip -5- and disconnect air intake hose from throttle valve module.
–  Place a drip tray underneath to catch hydraulic fluid.
  A10-10050
–  Detach hose clip -4- from suction hose -3-.
–  Disconnect suction hose and move hose to one side.
–  Unscrew banjo bolt -2- for pressure hose -1-.
–  Seal off connections with plugs.
  A48-10060
–  Remove bolt -2- (accessible from below).
–  Remove bolts -1- and take out power steering pump -3-.
Installing
Installation is carried out in the reverse sequence. Note the following points:
  Note
t  Renew gaskets and seals.
t  Before fitting a new power steering pump, put in hydraulic fluid at the inlet and rotate pump by hand until fluid comes out at the pressure outlet.
t  Secure all hose connections with new hose clips → Electronic parts catalogue “ETKA”.
  A48-10122
Marking -P- on suction hose -1- must be aligned with seam on power steering pump -2--arrows-.
–  Clean off fluid in engine compartment where necessary.
Install poly V-belt for power steering pump → Rep. Gr.13.
–  Attach lock carrier → Rep. Gr.50.
–  Install bumper → Rep. Gr.63.
–  Check hydraulic fluid level → Chapter.
–  Bleed steering system → Chapter.
–  Check steering system for leaks → Chapter.
–  Fit noise insulation → Rep. Gr.50.
  A48-10100

Removing and installing power steering pump (vehicles with 8-cyl. petrol engine with timing chain) > < Removing and installing power steering pump (vehicles with 6-cyl. 2.5 ltr. TDI engine)