audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Removing, installing and checking thermostat > < Draining and filling cooling system

A4 Cabriolet Mk2

Removing and installing coolant pump
Removing and installing coolant pump
Removing
–  Drain off coolant → Chapter.
–  Move lock carrier to service position → Chapter.
–  Remove toothed belt → Chapter.
   
–  Unscrew bolts -1- for coolant pump and remove coolant pump -2-.
–  Remove O-ring -3-.
Installing
Installation is carried out in the reverse order; note the following:
  Note
t  Renew O-ring.
t  Hose connections and hoses for charge air system must be free of oil and grease before assembly.
t  Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue.
t  To ensure that the charge air hoses can be properly secured at their connections, spray rust remover onto the worm thread of used hose clips before installing.
–  Clean and smoothen sealing surface for O-ring as required.
–  Lubricate new O-ring -3- with coolant additive.
–  Fit coolant pump -2-.
l  Installation position: Sealing plug in housing faces downwards.
–  Tighten bolts -1- for coolant pump.
–  Install toothed belt (adjust valve timing) → Anchor.
–  Install vibration damper → Chapter.
–  Install poly V-belt → Chapter.
–  Install lock carrier with attachments → Rep. Gr.50.
  A19-0084
–  Allow stop for torque reaction support to rest on rubber buffer for torque reaction support under its own weight and tighten nuts -arrows-.
–  Install bumper cover (front) → Rep. Gr.63.
–  Fill cooling system → Anchor.
Tightening torques
  A10-10288
ComponentNm
Coolant pump to cylinder block15
Stop for torque reaction support to lock carrier28
Hose clips (9 mm wide)3
Hose clips (13 mm wide)5.5

   

Removing, installing and checking thermostat > < Draining and filling cooling system