oil AUDI A4 1998 B5 / 1.G AWM Engine Charge Pressure System With Exhaust Turbocharger Workshop Manual

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7 -
Oil supply line
Tighten union nut to 23 NmFrom oil filter bracket -Item 24 -, Page 17
-10

8 -
3.5 Nm
9 -
Heat shield
10 -
23 Nm
11 -
Exhaust manifold
Removing and installing Page 26
-21
12 -
35 Nm
Always replaceCoat thread and head attachment area with
high temperature lubricant G 052 112 A3
13 -
10 Nm
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22 -
10 Nm
Apply D 000 600 when installing
23 -
Gasket Always replace
24 -
Oil return line To oil pan
25 -
Gasket Always replace
26 -
10 Nm
27 -
10 Nm
28 -
Turbocharger Checking Page 21
-8
29 -
25 Nm
30 -
Bracket
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CAUTION!
The air conditioner refrigerant circuit must not be opened. - Loosen bolts securing ribbed belt tensioning roller for A/C compressor -
arrows-. Loosen belt and remove.
- Disconnect A/C compressor from bracket and secure to body with wire.

- Remove bracket for exhaust turbocharger -2-.
- Unscrew oil return line -1- from exhaust turbocharger and set aside.
- Loosen air duct hoses -4- and -5- on exhaust turbocharger.
- Remove banjo bolt -3- for pressure line.
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Note:
The isolating element in the exhaust system must not be bent more than
10 or it may be damaged. - Loosen bolts -1- and -3- of oil feed line.
- Remove oil feed line -5- at exhaust turbocharger.- Remove catalytic converter from exhaust turbocharger -6-.
- Remove exhaust turbocharger from exhaust manifold -2-.
- Swivel exhaust turbocharger to side, loosen mounting angle and banjo
bolt of coolant feed line on exhaust turbocharger.
- Remove exhaust turbocharger.
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Installing
Installation is carried out in the reverse order of
removal; note the following:

Note:

All cable ties which are released or cut open
when removing must be installed in the same
position when installing.
Secure all hose connections with the correct
hose clips (same as original equipment):

Parts Catalog

The hose connectors and hoses must be free of
oil and grease before assembling.
Always replace seals, gaskets and self-locking
nuts.

- Perform following operating steps before
tightening exhaust turbocharger:

-
Fasten coolant feed line loosely to bracket on
vacuum unit for wastegate bypass regulator
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Note:
Fill the exhaust turbocharger with engine oil via
the oil supply connection.

- Install ribbed belt for A/C compressor Page
13
-20
.

- Top up coolant Page 19
-7 .

- Check oil level Page 17
-35
.

Note:
After installing the turbocharger, run engine for
approx. 1 minute at idling speed; do not rev. up
immediately. This ensures the turbocharger is
properly lubricated.

Tightening torques

Component
Nm
Coolant feed line to exhaust turbocharger
35
Bracket for coolant feed line to exhaust
turbocharger
10
Turbocharger to exhaust manifold
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Component
Nm
Turbocharger bracket to cylinder block 25
Turbocharger bracket to turbocharger 30
Catalytic converter to exhaust
turbocharger 30
Oil return line to turbocharger 10
Oil supply line to turbocharger 23
Bracket for oil feed line to cylinder head 23
Heat shield to line for secondary air inlet
3.5
Hose clamps for coolant hoses 2
Hose clamps for air duct hoses 3.5
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