Removing and installing particulate filter - vehicles with four-wheel drive — VW

Removing and installing particulate filter - vehicles with four-wheel drive
Special tools and workshop equipment required
Torque wrench 5-50 Nm
V.A.G 1331
Note
If a new particulate filter is installed, an ash mass comparison must be carried out in guided fault finding
Vehicle diagnostic tester
.
Assembly overview - particulate filter
Chapter
Removing
Unclip fuel and coolant hoses from right air pipe.
Remove bolt
1
.
Remove right air pipe. Raise retaining clips
arrows
slightly to do so.
Disconnect connector
1
on
intake manifold flap motor
V157
.
Unscrew bolts
arrows
and remove
intake manifold flap motor
V157
.
Remove intake hose from air filter/turbocharger.
Disconnect electrical connector
arrow
on
exhaust gas pressure sensor 1
G450
.
Unscrew
exhaust gas pressure sensor 1
G450
with bracket.
Remove subframe together with steering rack
Running gear, axles, steering
Rep. gr.
40
Removing and installing subframe with hydraulic steering rack
.
Remove right drive shaft
Running gear, axles, steering
Rep. gr.
40
Drive shafts; Removing and installing drive shafts
.
Unbolt heat shield for right drive shaft from bevel box
arrows
.
Disconnect control lines
1
and
2
from particulate filter
5
and remove
exhaust gas pressure sensor 1
G450
with control lines.
Separate connector of
exhaust gas temperature sender 2
G448
3
from
Lambda probe
G39
4
and
exhaust gas temperature sender 3
G495
6
.
Loosen retaining clip
1
with seal
2
for particulate filter.
Loosen retaining clip
1
.
Unscrew particulate filter
1
from particulate filter bracket
2
.
Note
Decoupling elements in front exhaust pipe must not be bent more than 10° - danger of damage.
Loosen double clamp
1
and push to rear.
Take particulate filter out downwards.
Installing
Installation is carried out in the reverse order; note the following:
Note
If G450 is renewed, renew M6x22 bolt also.
Decoupling elements in front exhaust pipe must not be bent more than 10° - danger of damage.
Renew seals, gaskets and self-locking nuts.
Fit all cable ties in the original position when installing.
Install right drive shaft
Running gear, axles, steering
Rep. gr.
40
Drive shafts; Removing and installing drive shaft
.
Install subframe together with steering rack
Running gear, axles, steering
Rep. gr.
40
Removing and installing subframe with hydraulic steering rack
.
Tighten new securing nuts for heat shield.
Aligning exhaust system free of stress
Chapter
.
After renewing particulate filter perform adaption in
“Guided functions”
Vehicle diagnostic tester
.
Specified torques
Chapter
“
Assembly overview – emission control with diesel particulate filter, engine codes BLS, BSU
”
Chapter
“
Assembly overview - exhaust gas temperature regulation
”
Chapter
“
Assembly overview - intake manifold, engine codes BLS, BSU
”
Drive shafts; Assembly overview - drive shafts
Rep. gr.
40
Assembly overview - drive shaft
.
Subframe; Assembly overview - subframe
Rep. gr.
40
Subframe
.
Remove noise insulation
Rep. gr.
50
Body - front; Noise insulation
.