belt AUDI A4 1997 B5 / 1.G AFC Engine Lock Carrier Removing For Service Workshop Manual

15-10

Camshaft oil seals, replacing


Front

- Remove toothed belt page 13-11
.

- Remove cylinder head cover.

- Remove rear toothed-belt guard.

Note:
Do not oil sealing lip or outer edge of seal before pressing in.
Left front - Remove seal with seal extractor 3240.
- Clean bearing and sealing surfaces.

Right front - Press seal in as far as possible using seal installer 3241.
- Use pulling sleeve on camshaft.
- Press seal in flush using 3241.
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15-13

Cylinder head, removing and installing


Engine installed
This removal procedure refers to the left cylinder
head

Removing

- Remove ribbed belt page 13
-9

- Remove toothed belt page 13
-11

- Disconnect exhaust pipe from manifold.
- Disconnect components of EGR system, if applicable.

- Drain engine coolant at drain plug (arrow) using special tool 3247, and
at drain plug in bottom of radiator.
- Remove air hose between Mass Air Flow (MAF) sensor and intake
manifold.
- Disconnect all spark plug connectors.
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15-16

- Remove heated oxygen sensors.

- Remove exhaust manifold heat shield.

- Remove cylinder head cover.

- Remove rear toothed-belt guard.

- Disconnect hose from hydraulic reservoir to
pump.

- Remove cylinder head.

Checking cylinder head distortion

- Measure with feeler gauge at several points using straight edge.
Max. permissible distortion: 0.05 mm (0.0020 in.)
Pa
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15-19

Camshaft, removing and installing


Removing

- Removing ribbed drive belt page 13-9 .

- Remove toothed camshaft drive belt page 13
-
11
.

- Remove cylinder head cover.
_________________________________________________________
Left side:

- Remove housing for camshaft position sensor.
Right side:

- Remove plug/cover on cylinder head.
_________________________________________________________

- Remove toothed belt camshaft sprocket.

- Remove camshaft bearing caps -2- and -3-.
- Gradually and evenly loosen nuts for bearing caps -1- and -4-,
alternating in diagonal sequence.
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15-24

Valve stem oil seals, replacing


Cylinder head installed

- Remove toothed camshaft drive belt page 13
-
11
.

- Remove camshafts and hydraulic lifters.

- Remove spark plugs.

- Rotate crankshaft by hand to set piston of
appropriate cylinder to Bottom Dead Center
(BDC).

- Thread VW 653/3 hose, US 1106 cylinder
leakdown tester or equivalent with seal into
spark plug hole by hand and apply a continuous
pressure of at least 6 bar (87psi).

Note:
Tight valve keepers can be loosened by tapping lightly on lever VW 541/1
with a hammer. - Install compressor tool 2036 and adjust to height of studs.
- Remove valve spring with valve spring tensioner VW 541/1 and thrust
pad VW 541/5 or equivalent.
Pa
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g for service
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