1997 AUDI A4 belt

15-7


24 -
Rotor for Hall sensor
Note position (notch on camshaft)
25 -
Washer Conical
26 -
25 Nm
27 -
Hall sensor
28 -
10 Nm
29 -
30 Nm +180 (1/2 turn)
30 -
Camshaft sprocket
31 -
Oil seal (toothed belt end)
Replacing Page 15
-10
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15-10

Oil seals in cylinder heads, replacing


Oil seal for camshaft drive (left and right
cylinder heads)

Note:
If the oil seal on one side is leaking it is advisable
to replace the seals on both sides.

- Remove ribbed belt Page 13
-1 .

- Remove toothed belt Page 13
-4 .

- Remove rear toothed belt guard.

- Pull out oil seal with oil seal extractor 3240.
- Clean contact surface and sealing surface.
- Do not apply oil to sealing lip or outer circumference of seal.
- Install guide sleeve 3241/2 (from tool set 3241) onto camshaft.

- Press seal flush into cylinder head using press sleeve 3241/1 and bolt
3241/3.
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15-19

- Remove cover panel from cylinder head cover
(cylinder bank 4-6).

- Release hose clamp -arrow-.
- Remove upper section of intake line -1-.
- Disconnect hose -2-.

- Disconnect hose (arrow).
- Remove bolt securing toothed belt guard from cylinder head cover.
- Pull plug connectors off ignition coils.
- Pull crankcase breather off cylinder head cover.
- Remove cylinder head cover.
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15-28

- Remove bolt securing toothed belt guard from
cylinder head cover.

- Unplug connectors from ignition coils.

- Pull crankcase breather off cylinder head
cover.

- Remove ignition coils.

- Remove cylinder head cover.

Installing
Install in reverse sequence; note the following
points.

- Seal end points of joints between bearing caps and cylinder head.
- Before installing cylinder head cover and gasket, carefully apply a
small quantity of sealant D 454 300 A2 at four end points of sealing
surfaces on cylinder head -arrows-, using a small screwdriver.
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15-32


Note:
Watch position of retaining strips -2-. - Remove pressure lines -1-.

- Remove tensioner -1- for ribbed belt.
- Remove toothed belt guards -2- (left and right).
- Remove toothed belt guard -3- (center).
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15-34


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

- Remove idler wheel for ribbed belt -arrows-.
- Remove toothed belt guard behind vibration damper -arrows-.
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15-35

Notes:

Mark the direction of rotation of the toothed belt
with chalk or felt pen before removing. A used
belt can break if it rotates in the wrong direction
when reinstalled.
The toothed belt tensioning element is oil-
damped and can therefore only be compressed
slowly by applying constant pressure.

- Using a hexagon key, turn toothed belt tensioning roller -1- clockwise 8
mm in direction of arrow until tensioning lever -2- compresses
tensioning element -3- sufficiently to enable a 2mm dia. spring pin to be
installed in the drilling and in the plunger.
- Insert spring pin and release toothed belt tensioning roller.
Use spring pin from 2024 A.
- Insert camshaft clamp 3391 in securing plates of two camshafts.
- Loosen both camshaft bolts and remove approx. 5 turns.
- Take out camshaft clamp 3391.

- Pull off both camshaft sprockets with special tool T40001.
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15-36


- Unbolt rear left toothed belt guard -arrows-.
- Detach intake manifold using special tool 3249.

- Unbolt cylinder head lifting bracket with coolant line -arrows- from
cylinder head.
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