1997 AUDI A4 APB Engine Valve Gear Service Workshop Manual

15-17

Rear oil seal and sealing flange (left cylinder
head)

Note:
Rear sealing flange and oil seal on left-hand
cylinder head must be replaceed together as
follows:

- Remove bolts -arrows- and remove engine cover panels -A...C-.

- Remove air duct -arrows-.
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15-18


Note:
Leave coolant hoses connected. - Remove coolant reservoir -arrows- and move it clear to the side.
- Unplug connector from coolant level monitor.
- Move wiring harness clear at bulkhead.

- Unbolt bracket -arrows- for plug connectors on bulkhead and move
clear to the side.
- Unbolt Hall sensor housing (10 Nm).
- Remove bolt securing Hall sensor rotor (20 Nm) and carefully lever off
rotor using a screwdriver.
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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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15-20


- Remove double bearing cap -arrows-.
- Take out oil seal and sealing flange.
- Clean contact surfaces and sealing surfaces of double bearing cap.

- Apply a thin coating of sealant 454 300 A2 to shaded areas on double
bearing cap (see illustration), install bearing cap and tighten bolts to 10
Nm.
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15-21

- Install guide sleeve (from tool set 3241) onto
camshaft.

Installing
Install in reverse sequence; note the following points: - Press in oil seal until flush using press sleeve 3241/1 and bolt 3241/3.
- Carefully knock in sealing flange against stop using 3202 and a plastic
hammer.

- 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.
Pa
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15-22

Cylinder head covers, removing and
installing


Removing and installing left cylinder head
cover

Removing

- Remove bolts -arrows- and remove engine cover panels -A...C-.

- Remove air duct -arrows-.
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15-23


Note:
Leave coolant hoses connected. - Remove coolant reservoir -arrows- and move it clear to the side.
- Unplug connector from coolant level monitor.
- Remove cover panel from cylinder head cover (cylinder bank 4 - 6).

Note:
Plug lower section of intake line. - Release hose clamp -arrow-.
- Remove intake line -1-.
- Disconnect hose -2-.
- Detach water line -3-.
Pa
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15-24


Installing
Install in reverse sequence; note the following points: - Pull off hose -1-.
- Pull plug connectors off ignition coils.
- Pull crankcase breather off cylinder head cover.
- Remove ignition coils.
- Remove cylinder head cover.

- 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.
Pa
ge 24 of 99 Valve
gear, servicin
g
11/21/2002 htt
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE05.15.1