audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Removing and installing coolant thermostat > < Draining and filling cooling system
4-Cylinder engine (5-valve), Mechanics
Removing and installing parts of cooling system
Removing and installing coolant pump
 
A13-0374

Removing

  • ‒ Remove ribbed belt .
  • ‒ Remove tensioning element for ribbed belt -arrows-.
  • ‒ Drain cooling system=> Page 19-4.
  • ‒ Turn crankshaft to TDC position of No. 1 cylinder with engine installed => Page 13-37.
  • ‒ Turn crankshaft to TDC position of No. 1 cylinder with engine removed => Page 13-42.
  • ‒ Take toothed belt off camshaft sprocket => Page 13-34.
 
A19-0325
  • ‒ → Remove centre section of toothed belt guard -arrows-.

Notes:

  • ◆ The vibration damper and bottom toothed belt guard do not have to be removed.
  • ◆ The toothed belt should be left in position on the crankshaft sprocket.
  • ◆ Before removing the coolant pump cover the toothed belt with a rag to protect it from coolant spills.
 
A19-0033
  • ‒ → Unscrew coolant pump securing bolts -1- and remove coolant pump -2-.

Installing

Install in reverse sequence; note the following points:

Notes:

  • ◆ When performing repairs, renew seals, gaskets and stretch bolts which have a specified tightening angle.
  • ◆ Secure all hose connections with the correct hose clips (same as original equipment)

=> Parts catalogue

 
A19-0084
  • ‒ → Lightly coat new O-ring -3- with coolant G 012 A8 D.
  • ‒ Fit coolant pump -2-.
    • ‒ Installation position: sealing plug in housing faces downwards.
  • ‒ Tighten bolts -1- for coolant pump to 15 Nm.
  • ‒ Install toothed belt (adjust valve timing) => Page 13-35

 
A13-0374
  • ‒ → Install tensioning element for ribbed belt => -arrows-.
  • ‒ Install ribbed belt .
  • ‒ Fill up with coolant=> Page 19-7.

Tightening torques

Component

Nm

Coolant pump to cylinder block

15

Centre section of toothed belt guard to cylinder block


10 1)

Ribbed belt tensioning element to cylinder block


23

    1)    Insert with thread-locking adhesive;
        thread-locker

=> Parts catalogue

Removing and installing coolant thermostat > < Draining and filling cooling system