AUDI A4 1999 B5 / 1.G AWM Engine Valve Gear Service Owner's Manual

15-57

Intake camshaft seal, replacing


Special tools and equipment

Oil seal extractor 2085

Installation tool 3241
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15-58

Removing

Cylinder head installed
Lock carrier must be in service position
Page 13
-1 .

- Remove engine cover -arrows-.
- Remove upper toothed belt guard Page 13
-35
.

- Disconnect connector from camshaft position sensor -arrow-.
- Remove sensor housing.
- Remove sensor rotor and washer.
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15-59


- Insert camshaft sprocket bolt 2085/1 by hand into camshaft as far as it
will go.
- Adjust inner part of oil seal extractor 2085 two turns (approx. 3 mm)
from outer part and lock in position with knurled screw.

- Lubricate threaded head of oil seal extractor 2085, place it in position
and, exerting firm pressure, screw it into oil seal as far as possible.
- Loosen knurled screw and turn inner part of extractor against camshaft
until oil seal has been extracted.
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15-60

Installing

Note:

Production variations may have the shaft
sealing rings with ring spring or PTFE sealing
rings used at the intake camshaft.

Installing PTFE sealing ring:
Difference: The regular shaft sealing ring has only one sealing lip -
arrow 1- which is tensioned by a spring. The PTFE sealing ring has a
thread-like sealing area -arrow 2- but no spring. When installing, the sealing surface of the PTFE sealing ring must not
be stretched. For this reason it is not permitted to install the PTFE
sealing ring together with the guide sleeve for sealing rings with
spring. The PTFE sealing rings must be aligned to the rotation direction of the
shaft (see arrow marking on sealing ring). The wrong rotation direction
causes oil leakage.

Note:
Do not oil sealing lip of oil seal. - Check edge of chamfer -arrow- on shaft end of intake camshaft for
burrs or sharp edges. If necessary, smooth edge with an oil stone.
- Push PTFE sealing ring carefully onto shaft end by hand.
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15-61

Installing sealing ring with spring:

Note:
Do not oil sealing lip of oil seal.

All models: - Place guide sleeve 3241/2 onto camshaft journal.
- Slide oil seal over guide sleeve.

Tightening torques - Press in sealing ring with pressure sleeve 3241/1 as far as it will go. To
do this use bolt 3241/3.
- Install camshaft position sensor Page 15
-46
.
- Install toothed belt guard (upper section).
- Install lock carrier Page 13
-1 .
Component

Nm
Camshaft position sensor rotor to camshaft 25
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Camshaft position sensor housing to cylinder head 10
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15-62


Camshafts and camshaft adjuster,
removing and installing

Special tools and equipment

Holding tool 3036
Retainer for chain tensioner 3366
Tensioning screw T10092
Guide pin T40011
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15-63

Removing

Cylinder head installed
Lock carrier must be in service position
Page 13
-1 .

- Remove engine cover -arrows-.
- Remove combination valve for secondary air inlet Page 26
-64
.

- Disconnect connector -arrow- from camshaft adjuster.
- Remove upper toothed belt guard Page 13
-35
.
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15-64


- Set crankshaft to markings for TDC of No. 1 cylinder by turning central
bolt on crankshaft sprocket in direction of rotation -arrows-.
- Remove cylinder head cover Page 15
-15
.

- Thread socket head fastener T10092 into tensioner for toothed belt.
- Tension pressure piston of tensioner until piston is secured with pin
T40011.
- Remove toothed belt from camshaft sprocket.
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15-65

- Loosen camshaft sprocket (counter hold with
3036).

- Remove camshaft sprocket.

- Remove camshaft position sensor completely.

Note:
If the retainer for chain tensioner is tightened excessively, this can
damage the camshaft adjuster. - Hold camshaft adjuster in position with retainer for chain tensioner
3366.

- Re-check TDC position of camshafts.

Marks on two camshafts must be in line with arrows on bearing
caps.
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