1997 AUDI A4 AEB ATW Engines Engine Assembly Workshop Manual

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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13-19

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

- Install V-belt and loosely bolt both halves of belt
pulley to coolant pump.

- Slowly bring belt pulley halves together by
turning coolant pump and tightening bolts for
belt pulley in stages.

While tightening pulley halves, the V-belt must
move outward and sit correctly on belt pulley.

- Tighten bolts to 25 Nm (18 ft lb).

Note:
Adjustment of V-belt tension for coolant pump is
not possible.

- Install ribbed belt and release tension on
tensioner.

- Start engine and check running of belt.

- Check tightening torque of bolts for coolant
pump belt pulley.
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13-20

Bearing for viscous fan in mounting
bracket, removing and installing


Lock carrier in service position Page 13
-1

Special tools and equipment

Hex nut from 3301 assembly tool
Extractor pipe from 3350 installation device
3367 press out tool for viscous clutch fan
bearing bushing

Removing

- Remove ribbed belt Page 13
-15
.

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

- Remove circlip (arrow) from bearing bushing.
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13-21


Installing
Installation is the reverse of removal, noting the following: - Pull bearing from bracket using hex nut from 3301 assembly tool, bolt
from 3367 press out tool for viscous fan bearing bushing and 3350
extractor pipe.

- Press in bearing using 3367 press out tool for viscous fan and hex nut
from 3301 assembly tool.
- Using circlip pliers, install circlip in viscous fan bracket.
- Install viscous fan Page 13
-14
, Fig. 1
.
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13-22

Mounting bracket for generator, power
steering pump and viscous fan,
removing and installing


Lock carrier in service position Page 13
-1

Removing

CAUTION!

Before disconnecting the battery, determine
the correct coding for the anti-theft radio.

Note:
Ribbed belt for A/C remains installed.
Ribbed belt, removing Page 13
-15
. - Switch ignition off and disconnect battery Ground (GND) strap.
- Remove ribbed belt and ribbed belt tensioner Page 13
-18
.
- Remove belt pulley for power steering pump.
- Unbolt power steering pump from mounting bracket for generator,
power steering pump and viscous fan and tie to side.
All lines remain connected
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