Removing and installing exhaust gas temperature sender 2 for bank 2 G449 — AUDI

Removing and installing
exhaust gas temperature sender 2 for bank 2
G449
Special tools and workshop equipment required
Engine and gearbox jack
V.A.G 1383 A
Tool set
T10395 A
Removing
Note
All cable ties which are released or cut open when removing must be fitted in the same position when installing.
Release fasteners
2
and
4
and remove rear noise insulation.
Loosen clamps
1
and
2
and move to front.
Remove nuts on left and right
arrows
at centre bracket for exhaust pipes.
Press studs in mounting forwards.
Loosen union nut
1
and unclip pressure pipe at particulate filter/main catalytic converter (left-side).
Loosen union nut
3
and detach pressure pipe at exhaust pipe.
Unscrew
temperature sender 2 before particulate filter
G498
item 2
from particulate filter/main catalytic converter (left-side).
Note
Disregard
item 4
.
Unbolt exhaust pipe (left-side) from starter catalytic converter
arrows
.
Detach particulate filter/main catalytic converter (left side) with exhaust pipe.
Unscrew heat shield
A
for propshaft
arrows
.
Support tunnel cross member using
engine and gearbox jack
V.A.G 1383 A
.
Remove bolts
arrows
at tunnel cross member.
First remove bolts
2
and
3
and then subframe bolts
1
and
4
.
Lower gearbox and subframe slowly using
engine and gearbox jack
V.A.G 1383 A
.
Note
Lower gearbox only as far as absolutely necessary. Bend joints of propshaft only as far as stop to avoid damaging joints.
Detach electrical connector for
exhaust gas temperature sender 2, bank 2
G449
item 3
from retainer and unplug.
Unscrew
exhaust gas temperature sender 2, bank 2
G449
.
Installing
Installation is carried out in the reverse order; note the following:
Note
Fit all cable ties in the original positions when installing.
Note correct installation position of
exhaust gas temperature sender 2, bank 2
G449
:
The electrical connection must point downwards in vertical direction.
Distance to gearbox must be at least 15 mm.
Install particulate filter together with main catalytic converter
Chapter
.
Align exhaust system so it is free of stress
Chapter
.
Install subframe
Rep. gr.
40
.
Tightening torques
Component
Nm
Exhaust gas temperature sender 2, bank 2
G449
to starter catalytic converter
45
1)
Exhaust pipe to centre bracket
25
Tunnel cross member to body
40
Propshaft heat shield to gearbox
23
1)
Coat thread with high-temperature paste; for high-temperature paste refer to
Electronic parts catalogue
.