oil AUDI A4 1998 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual

21-3


- Push back heat insulation hose in direction of arrow.
- Disconnect vacuum hose -1-.
- Unbolt bracket -2- with gearbox oil lines.
- Disconnect line -3-.
- Disconnect pressure hose -4- from turbocharger.

- Disconnect oil return line -1-.
- Disconnect water line -2-.
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21-4


- Disconnect hose -arrow- from cylinder head.

Installing
Notes:
When installing turbocharger, ensure that O-ring for oil return is not
damaged. - Remove turbocharger -arrows-.
- Install in reverse sequence.
Pa
ge 4 of 37 Char
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ystem with turbochar
ger
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21-6


Installing
Notes:
When installing turbocharger, be sure that o-ring at connection flange for
oil return is not damaged. - Disconnect oil return line -1-.
- Disconnect water line -2-.
- Remove turbocharger -3- (3 bolts).
- Installation is the reverse of removal.

The text "Abgasturbocharger" must be readable as shown in illustration,
install turbocharger hose -1- properly if necessary.
The hose clamps -2- must be installed as shown in illustration. The bolt-
locks on the screw clamps must be placed at the X-marking on the hose.
Pa
ge 6 of 37 Char
ge air s
ystem with turbochar
ger
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21-7

Tightening torque

Bolted mountings Tightening
torque
Turbocharger 20 Nm
Intake line to cylinder head 10 Nm
Heat shield to turbocharger 10 Nm
Exhaust manifold to exhaust
pipe 25 Nm
Injector pipes 30 Nm
Intake pipe to engine
support 10 Nm
Oil pipe to turbocharger 15 Nm
Oil pipe to intake manifold 20 Nm
Pa
ge 7 of 37 Char
ge air s
ystem with turbochar
ger
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21-10

Requirements for test:

Diagnostic Trouble Code (DTC) memory has
been interrogated

Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel
Injection & Ignition, Engine Code(s): APB, Repair Group 01


Output Diagnostic Test Mode (DTM) has
been performed
Engine oil temperature at least 60 C

All vacuum connections airtight

- Loosen bolts -arrows- and remove engine cover panel -B-.
Pa
ge 10 of 37 Char
ge air s
ystem with turbochar
ger
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE05.21.1