Pay particular attention to the following on installation:

• Before installing a new pump, fill intake side with hydraulic fluid and turn pump by hand until fluid comes out the pump side.
• Clean areas in engine compartment contaminated with fluid.
• Installation position of expansion hose, see INSTALLATION POSITION OF RIBBED BELT 
• Installation position of suction hose, see INSTALLATION POSITION OF RIBBED BELT 
• Replace oil seals and O-rings.
• Secure all hose connections with standard hose clamps.

See Parts Catalog

• Place pump in bracket and screw in all three bolts (arrows).
• Install expansion and intake hoses with new seals, but do not tighten all the way.
  Fig 1: Installing Power Steering Pump (8-Cylinder Engine Bi-Turbo)

  Courtesy of AUDI OF AMERICA, INC.
  NOTE: The front of the belt pulley is marked "front".
Fig 2: Identifying Power Steering Pump Belt Pulley (8-Cylinder Engine Bi-Turbo)
Courtesy of AUDI OF AMERICA, INC.
• Screw on power steering pump pulley while counterholding with pin wrench - 3212-.
Fig 3: Installing Power Steering Pump Belt Pulley Bolts (8-Cylinder Engine Bi-Turbo)
Courtesy of AUDI OF AMERICA, INC.