torque AUDI TT 1999 8N / 1.G AEB ATW Engines Engine Assembly Workshop Manual

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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13-19

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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13-23

- 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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13-26


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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13-35

Tightening torques

Component

Tightening
torque
Toothed belt tensioner to
tensioner assembly
25 Nm (18 ft
lb)
Lower toothed belt cover
to
cylinder block M6 10 Nm (7 ft lb)
M8 20 Nm (15 ft
lb)
Vibration damper/belt pulley to
crankshaft
40 Nm (30 ft lb)
1)
Ribbed belt tensioner to
mounting bracket
25 Nm (18 ft
lb)
1) Bolt strength grade: 10.9
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