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Stress-free alignment of exhaust system >
< Removing and installing exhaust manifold (left-side)
A4 Mk2
Power unit
8-cylinder direct petrol injection engine (4.2 ltr. 4-valve RS 4), mechanics
Exhaust system
Removing and installing exhaust manifold (right-side)
Removing and installing exhaust manifold (right-side)
Removing and installing exhaust manifold (right-side)
Removing
l
Engine removed and in position on scissor-type assembly platform -VAS 6131 A- with gearbox attached.
Note
t
Fit all heat shields and heat insulation sleeves in the original positions when installing.
t
All cable ties which are released or cut open when removing must be fitted in the same position when installing.
–
Remove electrical connectors
-1-
and
-2-
from bracket on gearbox.
–
Unplug electrical connectors.
–
Detach heat insulation sleeve at wiring harness and release individual electrical wires.
–
Unscrew bolt
-2-
at bracket for front exhaust pipe (right-side).
Note
Disregard
-item 1-
.
–
Unscrew nuts
-arrows-
securing front exhaust pipe to exhaust manifold (right-side).
–
Take out front exhaust pipe with starter and main catalytic converter.
–
Unscrew nuts
-1 ... 6-
and remove exhaust manifold (right-side).
Installing
Installation is carried out in the reverse order; note the following:
Note
t
Renew gasket and self-locking nuts.
t
Fit all heat shields and heat insulation sleeves in the original positions when installing.
t
All cable ties which are released or cut open when removing must be fitted in the same position when installing.
–
Fit gasket onto studs.
–
Fit exhaust manifold in mounting strips and tighten nuts hand-tight.
–
Tighten nuts for exhaust manifold in 2 stages as follows:
1.
Pre-tighten nuts in the sequence
-1 ... 6-
to 20 Nm.
2.
Tighten nuts in the sequence
-1 ... 6-
to 30 Nm.
–
Install front exhaust pipe (right-side)
→ Chapter
.
Tightening torque
Component
Nm
Exhaust manifold to cylinder head
30
1)2)3)
l
1)
Renew nuts.
l
2)
Grease with high-temperature paste; refer to
→ Electronic parts catalogue
for high-temperature paste
l
3)
Tighten in two stages.
Power unit
8-cylinder direct petrol injection engine (4.2 ltr. 4-valve RS 4), mechanics
Exhaust system
Removing and installing exhaust manifold (right-side)
Stress-free alignment of exhaust system >
< Removing and installing exhaust manifold (left-side)