1997 AUDI A4 APB Engine Assembly Workshop Manual

13-9

Installing

- Insert camshaft clamp 3391 in securing plates of
two camshafts.

- Slacken both camshaft bolts and remove
approx. 5 turns.

- Take out camshaft clamp 3391.

Note:
The camshaft sprockets should be just tight enough on the camshaft
tapers so that they can still be turned but do not move axially. - Pull off both camshaft sprockets with special tool T40001.
- Reinstall both camshaft sprockets with securing plates and tighten
hand-tight again.

- Install toothed belt on all sprockets as illustrated.
- Install camshaft clamp 3391.
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13-10


- Using a hex key, turn toothed belt tensioning roller -1- clockwise 8 mm
in direction of arrow until special tool T 400 11 can be removed.

- Pre-tension toothed belt by a turning in direction of arrow with a torque
of 15 Nm using a torque wrench.
- Tighten bolts on camshaft sprockets.
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13-11


- Install idler wheel for ribbed belt -arrows-.
- Install toothed belt guard behind vibration damper -arrows-.

- Install vibration damper. Note positions of locating lugs -arrows- on belt
sprocket.
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13-12

- Install toothed belt guard.

- Install ribbed belt Page 13
-3 .

Tightening torques

Toothed belt sprocket to
camshaft 55 Nm
Idler wheel 45 Nm
Toothed belt tensioning roller 20 Nm
Pulley to crankshaft 20 Nm
Toothed belt tensioning
element 10 Nm
Central bolt
1)
to crankshaft
200 Nm + 180

2)

1) The central bolt must always be replaced.
2) Turning in two stages of 90 is also
permissible.
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13-13

Vibration damper, removing and
installing


- Remove ribbed belt Page 13
-1 .

Note:
The central bolt does not have to be loosened to
remove the vibration damper.

- Remove vibration damper.

- When installing, ensure that notches -arrows- in vibration damper are
aligned with locating lugs on toothed belt sprocket.
Tightening torque: 25 Nm
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