AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owner's Manual

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.
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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-.
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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.
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15-25

Removing and installing right cylinder head
cover

Removing

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

- Remove air duct -arrows-.
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15-26

WARNING!

Fuel system is under pressure. Before
opening the system, place a cloth around the
connection. Then release pressure by
carefully loosening the connection.

- Disconnect fuel supply line and fuel return line -1- and -2-, and move
fuel lines clear.
- Pull hose off EVAP valve -3-.

- Unplug connector -1- from air mass meter.
- Unplug connectors -2- from ignition output stages, and move wiring
clear.
- Remove air cleaner.
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15-27


- Remover cover panel from right-hand cylinder head cover -arrows-.

Note:
Plug lower section of intake line. - Disconnect hose -1-.
- Disconnect hose -2-.
- Detach upper section of intake line -3-.
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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.
Pa
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15-29

Cylinder head, removing and installing


Removing and installing left cylinder head

Notes:

All hose connections are secured with clips.
Charge air system must be free of leaks.
Replace all seals and gaskets

Removing

- Remove engine Page 10
-1 .

- Unplug connector from air recirculation valve -2-.
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15-30


- Unplug connector for camshaft timing control -1- (cylinder bank 4..6).
- Unplug connectors from injectors -2- (cylinder bank 4..6).
- Unplug connectors from ignition coils -3- and move wiring harness
clear (cylinder bank 4..6).
- Pull crankcase breather -4- off cylinder head cover (cylinder bank 4..6).
- Remove ignition coils.

- Unplug connectors from injectors -2- (cylinder bank 1..3).
- Pull off hose -5- going to turbocharger intake side.
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