1997 AUDI A4 AEB ATW Engines Engine Assembly Workshop Manual

13-23

- Follow procedures for "Coolant pump, removing
and installing" Page 19
-13
.

Note:
Coolant pump is bolted to mounting bracket for
generator, power steering pump and viscous fan.

Installing
Installation is the reverse of removal, noting the
following:

- Replace O-ring for coolant pump (to guard
against leakage).

Tightening torques

Component

Tightening
torque
Belt pulley to power steering
pump 25 Nm (18 ft
lb)
Power steering pump to mounting
bracket for generator, power
steering pump and viscous fan
25 Nm (18 ft
lb)
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13-24


Toothed belt, overview

CAUTION!
Before removing toothed belt, note direction of
rotation with chalk or felt-tip marker. Reversing
the direction of rotation of a used belt can
destroy the belt. When installing the ribbed belt,
make sure it is seated correctly on the pulley.
1 -
Bolt
10 Nm (7 ft lb)
2 -
Bolt 10 Nm (7 ft lb)
3 -
Bolt 10 Nm (7 ft lb)
4 -
Bolt 20 Nm (15 ft lb)
5 -
Upper toothed belt cover To remove, unbolt ribbed belt tensionerWhen installing, carefully hook into lower
toothed belt cover
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13-25


6 -
Toothed belt
Before removing, note direction of rotation
using chalk or felt-tip marker Check for wearRemoving Page 13
-29
Installing (adjusting valve timing) Page 13
-32

7 -
Bolt for tensioner
25 Nm (18 ft lb)
8 -
Nut 10 Nm (7 ft lb)
9 -
Washer
10 -
Bolt 65 Nm (48 ft lb)Use 3036 retainer for loosening and
tightening
11 -
Washer
12 -
Camshaft gear For exhaust camshaftFor removing and installing, remove
toothed belt Page 13
-29

Installation position Fig. 1
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13 -
Tensioner
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13-26


14 -
Connecting bolt
25 Nm (18 ft lb)For tensioner
15 -
Rear toothed belt cover
16 -
Bolt 20 Nm (15 ft lb)
17 -
Intermediate shaft gear
18 -
Washer
19 -
Toothed belt gear for crankshaft Contact surface between toothed belt gear
and crankshaft must be free of oil Installation only possible in one position
20 -
Bolt for toothed belt gear for crankshaft Always replace90 Nm (66 ft lb) + additional 1/4 turn (90 )Do not oilUse 3099 retainer for loosening or
tightening Attach 3099 retainer Page 13
-39
To secure retainer, remove torque support
bracket Page 17
-2 , item 5
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13-27


21 -
Bolt
65 Nm (48 ft lb)Use 3036 retainer when loosening or
tightening
22 -
Toothed belt tensioner
23 -
Bolt 10 Nm (7 ft lb)
24 -
Idler pulley
25 -
Bolt 25 Nm (18 ft lb)
26 -
Lower toothed belt cover To remove, remove vibration damper
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13-28


Thin rib of camshaft gear points outward (arrows) and TDC Cyl. 1 marking
is visible. Fig. 1 Installation position for camshaft gear
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13-29

Toothed belt, removing and installing


Removing

Engine installed
Lock carrier in service position Page 13
-1

Special tools and equipment
V159 pin wrench

- Remove ribbed belt and ribbed belt tensioner
Page 13
-15
.

- Remove viscous clutch (with belt pulley) Page
13
-14
, Fig. 1
.

- Remove upper toothed belt cover.

CAUTION!

Before removing toothed belt, note direction
of rotation with chalk or felt-tip marker.
Reversing the direction of rotation of a used
belt can destroy the belt.

- Turn crankshaft at central bolt of toothed belt gear in direction of
engine rotation to TDC Cyl.1 marking (arrows).
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