AUDI A4 1999 B5 / 1.G AWM Engine Cylinder Head Remove And Install Owner's Manual

15-18

Installing
Installation is carried out in the reverse order of
removal; note the following:

Note:

Replace seals and gaskets.
Replace cylinder head cover gaskets if
damaged.

- Apply a small quantity of sealant AMV 174 004 01 to sides of joints -
arrows- on upper sealing surface of cylinder head.

- Apply a small quantity of sealant AMV 174 004 01 to sides of joints -
arrows- on upper sealing surface of cylinder head.
- First tighten inner nuts for cylinder head cover then tighten outer nuts
diagonally.
- Check that upper toothed belt guard is correctly seated.
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15-19

Tightening torques

Component
Nm
Cylinder head cover to cylinder head 10
Line of crankcase vent to cylinder
headcover
10
Line of secondary air inlet to cylinder head
cover
10
Hose clamps 2
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15-20

Cylinder head, removing


Special tools and equipment

Socket head fastener T10092

Pin T40011
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15-21

Procedure

Engine in vehicle
Lock carrier must be in service position
Page 13
-1 .

Note:
All cable ties which are released or cut open
when removing must be located in the same
position when installing.

- Observe or obtain radio anti-theft code on
vehicles with coded radio.

- Disconnect Ground strap at battery with ignition
switched off.

- Drain coolant Page 19
-4 .

- Remove intake line Page 15
-9 .

- Remove ribbed belt and tensioner for ribbed belt
Page 13
-18
.

- Remove air filter cover -arrow-.
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15-22


- Disconnect connectors as follows:
1 - on ACF valve (in addition, remove ACF valve from air filter housing)
2 - on air mass meter
3 - on solenoid valve for charge pressure control -N75-
- Disconnect hose connections, move wiring aside and remove air filter
housing -arrows-.

- Disconnect connector -arrow- from camshaft adjuster.
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15-23


- Remove line of crankcase vent -1-.
- Remove hose of crankcase venting from cylinder head cover.
- Remove line -1- from combination valve for secondary air inlet on
cylinder head cover and from heat shield -3- (engine code ANB only).
- Slightly swivel secondary air inlet line to side.
- Remove heat shield.

- Remove bolts -1- and -2- of oil feed line.
- Remove bolts -3- for exhaust turbocharger.
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15-24


- Disconnect connector -arrow- at coolant temperature sensor -G2-/-
G62-.

- Disconnect vacuum hose -arrow- from combination valve.
- Remove bolts -2- and -3- and remove coolant flange.
- Remove bracket -1- for oil feed line.
- Unclip all wiring from cylinder head and move clear to one side.
- Remove coolant hose going to heat exchanger (heater unit) at back of
cylinder head (first release retainers on connecting flange).
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15-25

- Remove upper toothed belt guard Page 13
-
35
.

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

- Attach socket head fastener T10092 into tensioner.
- Only tension pressure piston of tensioner until piston is secured with
pin T40011.
- Remove toothed belt from camshaft sprocket.
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15-26


- Disconnec Ground wire -2-.
- Disconnect connectors -3-.
- Move lines and hoses aside.
- Remove ignition coils -1-.

- Loosen nuts -arrows- for cylinder head cover and remove cylinder head
cover.
- Remove both oil deflectors.
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15-27


- Loosen cylinder head bolts in correct sequence.
- Remove cylinder head.
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