1999 AUDI A6 AEB ATW Engines Engine Assembly Workshop Manual

13-8


22 -
Brace
For intake manifold
23 -
Bolt 20 Nm (15 ft lb)
24 -
Bolt 40 Nm (30 ft lb)
25 -
Bolt 25 Nm (18 ft lb)
26 -
Bolt 25 Nm (18 ft lb)
27 -
Bracket For generator, power steering pump and
viscous fan Removing and installing Page 13
-22
Different length boltsArrangement and tightening sequence
Page 19
-16

28 -
Power steering pump
Removing and installing Repair Manual, Suspension, Wheels, Steering, Repair Group 48

29 -
Bolt
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25 Nm (18 ft lb)
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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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