Audi Workshop Service and Repair Manuals

Removing

Removing and installing ribbed belt

• ‒ Unclip toothed belt guard from both sides.
• ‒ → Turn engine manually into TDC position.
• ‒ Inspect position of camshaft:
  The large bore of the securing plates on the camshaft wheels must face each other internally, otherwise turn crankshaft further by one turn.
• ‒ Unbolt reference marking senders from left of crank housing.

• ‒ The TDC bore of the crankshaft must be behind the bore of the removed ignition timer sender (cannot be seen or felt).
• ‒ → Bolt crankshaft bracket 3242 into the bore of the removed ignition timer sender and tighten.
• ‒ Removing tensioning device for ribbed belt,

• ‒ Remove left and right toothed belt guard
• ‒ Removing and installing oscillation damper
• ‒ Remove lower toothed belt guard

Note:

• ◆ Mark D.O.R. of toothed belt. Running the belt in opposite direction can lead to damage.

• ‒ Slacken toothed belt tensioning roller
• ‒ Removing toothed belt

Installing

• ‒ → Detach camshaft wheels from left and right with claw puller, e.g. KUKKO 20-10 from cone.

Note:

• ◆ The claws of the puller must grip the rear hub.

• ‒ Position toothed belt over both camshaft wheels.
• ‒ Position toothed belt onto all wheels (position tensioning roller last).

• ‒ → Insert camshaft attachment 3243.

Note:

• ◆ The camshaft gears must be fitted sufficiently loosely onto the taper face so that they can still be moved on the camshafts but do not tilt.

Tensioning toothed belt

• ‒ Turn toothed belt tensioning roller with Allen key (A/F 8 mm) towards right and secure.
• ‒ Tighten toothed belt tensioning roller with second Allen key (A/F 8 mm).
• ‒ Check toothed belt tension between right-hand camshaft wheel and coolant pump.

• ‒ → It should be possible to turn the toothed belt between camshaft wheel and coolant pump with thumb and index finger just about 90°.
• ‒ Tightening torque of toothed belt tensioning roller 45 Nm
• ‒ Central bolt of crankshaft