torque AUDI A4 1999 B5 / 1.G AHA ATQ Engines Secondary Air System Workshop Manual

26-16

Secondary Air Injection (AIR) system
components, removing and installing

Component locations page 26
-14
.
Fuel injection and ignition components.

Repair Manual, 2.8 Liter V6 5V Fuel Injection
& Ignition, Repair Group 24
Note:
Always replace gaskets and seals.

A - Combination valve, left

- Remove engine coolant expansion tank from
bracket.

- Disconnect vacuum line -1-.
- Disconnect connection tube -2- from combination valve.
Tightening torque: 10 Nm (7 ft lb).
- Remove bolts -3- for combination valve from cylinder head and remove
valve.
Tightening torque: 10 Nm (7 ft lb).
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jection
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) system
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26-17

B - Combination valve, right

- Remove intake air duct between Mass Air Flow (MAF) sensor and
intake air elbow (three -arrows- on right).
- Remove intake air elbow from throttle body connector.
- Disconnect harness connector for Evaporative Emission (EVAP)
canister purge regulator valve (left arrow) and pull valve out of bracket.
- Disconnect harness connector at Mass Air Flow (MAF) sensor.

- Turn connector tube for Secondary Air Injection (AIR) pump 1/4-turn
(45 ) to right and pull forward off air cleaner. - Remove air cleaner housing.
Tightening torque: 20 Nm (15 ft lb).
Pa
ge 8 of 10 Secondar
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jection
(AIR
) system
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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26-18


C - Secondary Air Injection (AIR) pump motor - Remove vacuum line -1-.
- Disconnect connection tube -2- from combination valve.
Tightening torque: 10 Nm (7 ft lb).
- Remove bolts -3- for combination valve from cylinder head and if
necessary, remove bracket -4- from cylinder head.

Bolt -3- tightening torque: 10 Nm (7 ft lb).
Bracket -4- tightening torque: 20 Nm (15 ft lb).
- Remove combination valve.

Repair Manual, Body Exterior, Repair Group 63

Repair Manual, Body Exterior, Repair Group 50 - Remove noise insulation panel (arrows).
- Remove front bumper.
- Move lock carrier into service position.
Pa
ge 9 of 10 Secondar
y Air In
jection
(AIR
) system
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE03.26.2