AUDI A6 1996 C5 / 2.G AEB ATW Engines Engine Assembly User Guide

13-9


30 -
Coolant pump
With coolant regulatorRemoving and installing Page 19
-13
31 -
Belt pulley
For power steering pumpDesigned for ribbed beltInstall with bulged side facing in driving
direction
32 -
Belt pulley For power steering pumpDesigned for ribbed belt
33 -
Bolt 25 Nm (18 ft lb)
34 -
V-belt For coolant pumpRemoving and installing Page 13
-18
35 -
Viscous clutch
Removing and installing Page 13
-14
,
Fig. 1

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13-10


Ribbed belt for air conditioning

CAUTION!

The A/C refrigerant circuit must not be
opened.
Before removing ribbed 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
25 Nm (18 ft lb)
2 -
Refrigerant lines Do not unbolt or separate
3 -
Bushing Verify proper seating in bracket
4 -
Bolt For bolt strength grade 8.8, tighten to 25
Nm (18 ft lb) parts catalog For bolt strength grade 10.9, tighten to 30
Nm (22 ft lb) parts catalog
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13-11


CAUTION!
Do not let A/C compressor hang by refrigerant
lines. 5 -
Bracket
For A/C compressor
6 -
Ribbed belt tensioner Removing and installing Page 13
-15
7 -
Washer
8 -
Bolt
20 Nm (15 ft lb)
9 -
Ribbed belt Removing and installing Page 13
-15
Check for wear
10 -
A/C compressor After removing, secure A/C compressor to
long member (i.e. using wire).
11 -
Washer
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13-12


V-belt and ribbed belt, routing overview

1 -
Ribbed belt tensioner
2 -
Generator
3 -
Viscous clutch
4 -
Coolant pump
5 -
Power steering pump
6 -
V-belt
For coolant pumpRemoving and installing Page 13
-18
7 -
Ribbed belt
For generator, power steering pump and
viscous fan Removing and installing Page 13
-15
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13-13


8 -
Vibration damper
9 -
Ribbed belt tensioner
For A/C compressor
10 -
Ribbed belt For A/C compressor Removing and installing Page 13
-15
11 -
A/C compressor
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13-14


Fig. 1 Viscous fan, removing and installing
Lock carrier in service position Page 13
-1
Ribbed belt free of tension Page 13
-15

- Secure belt pulley for viscous fan with 5 x 60 mm bolt and remove
using hex socket wrench.
- Remove viscous fan.
- When installing viscous fan, tighten to 45 Nm (33 ft lb).

Installation is only possible in one position: the bore hole of the vibration
damper (arrow) must align with raised portion of toothed belt gear. Fig. 2 Install vibration damper
Lock carrier in service position Page 13
-1
Ribbed belt removed Page 13
-15

- Install vibration damper using only original equipment bolts (bolt
strength grade 10.9) parts catalog. - Tighten vibration damper bolts to 40 Nm (30 ft lb).
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13-15

Ribbed belt, removing and installing


Lock carrier in service position Page 13
-1

CAUTION!

Before removing ribbed 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.

Removing

- Remove noise insulation panel (arrows).

- Loosen bolts for ribbed belt tensioner for A/C compressor (arrows).
- Release tension on ribbed belt and remove belt.
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13-16

All models

Note: - Move ribbed belt tensioner in direction of arrow to release tension on
ribbed belt.

Ribbed belt tensioner can be locked in place by inserting a proper sized
angled hex socket wrench (arrow) or 3204 drift into locating bore.
- Remove ribbed belt and release tension on ribbed belt tensioner.
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13-17

Installing

Note:
When installing ribbed belt, make sure it is
seated correctly on the pulley.

- Place ribbed belt on belt pulleys for crankshaft,
viscous fan and power steering pump, (use tools
to pull up if necessary).

- Move ribbed belt tensioner in direction of arrow.
- Install ribbed belt on belt pulley for generator last and release tension
on belt tensioner.
- Check ribbed belt for proper installation.
Ribbed belt routing Page 13
-12
- Install ribbed belt for A/C compressor.
Ribbed belt routing Page 13
-12

- Use torque wrench to pre-tighten belt tensioner hex screw to 25 Nm
(18 ft lb).
- Tighten bolts -A- to 20 Nm (15 ft lb) at same time.
- Start engine and check running of belt.
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13-18

V-belt, removing and installing


Lock carrier in service position Page 13
-
17


Ribbed belt free of tension Page 13
-15


Removing

- Remove noise insulation panel (arrows).
- Remove viscous fan (with belt pulley) from bearing Page 13
-14
, Fig.
1
.

- Remove belt pulley for coolant pump. Use drift (arrow) to counterhold
at belt pulley for power steering pump.
- Remove V-belt.
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