FSCM Fuel pump i
igni 908 -F-[i
JP _[Retumn to last selection menu_ =F
Return to initial mask -F-[i
-F-L
Application selection: -F-fi
'AAG2 Trailer connection unit Start TIPS. | set
DBE Overhead control panel Second -F-fi],
ENR Electronic level control OK A Fay
First. Pric stability program = -F- Ht
i
|KU Automatic air conditioning/automatic temperature cofftrol_ -F-
: : -F-
Third = ad
oa ees Q| & &
Fa FS Fé FB Fo Fit 4

Switch off the ignition.
Disconnect the diagnostic system.

Disconnect battery charger.

33

® Emissions Campaign 2020040008

Replacement of AEM Parts

15 Spray penetrating oil
on the threads of the
NOx sensor upstream
of SCR catalytic
converter (3), clamp
(16), clamp (21),
thread of the exhaust
gas temperature
sensor (12) and
clamp (15), as shown.

Exhaust system
should be cold in
order to carry out
the next steps. This
avoids injuries.

fi]

Observe the wait
period and details
provided by the
manufacturer of the
penetrating oil!

Removal of SCR Catalytic Converter

16 The NOx sensor
harness downstream
of the SCR catalytic
converter (5) should
be cut for ease of
removal.

i]

The NOx sensor
downstream of the
SCR catalytic
converter (5) is to
remain in the SCR
catalytic converter
and to be returned
return together

34

Emissions Campaign 2020040008

20

Loosen the clamp (15) at
tailpipe (13) connection.

Lift: Remove tailpipe (13)
from decoupling element
(arrow). Remove tailpipe (13)
from vehicle.

Ramps: place a rag (arrow B)
between the tailpipe (13) and
the rear axle. Also Place a rag
(arrow A) between the tailpipe
(13) and the floor. Lay tailpipe
on the floor.

Remove and dispose the
clamp (15).

GJ

Observe state-specific
regulations for disposal.

Remove exhaust gas temperature sensor (12) upstream of

the SCR catalytic converter.

i]

This is done by unscrewing the union nut on the exhaust gas
temperature sensor (12) in a counter-clockwise direction.
Position the exhaust gas temperature sensor (12) outside the
working area

35

Emissions Campaign 2020040008

21

22

23

Remove the screw on the clamp (16 of
the AdBlue® injection nozzle (17).

Remove and dispose clamp (16) at
injection nozzle with a suitable tool and
position the AdBlue® injection nozzle (17)
outside the working area.

fi)

Observe state-specific regulations for
disposal.

Remove and dispose the profile seal (18)
on the AdBlue® injection nozzle (17).

i]

Observe state-specific regulations for
disposal.

36

Emissions Campaign 2020040008

24

25

Remove and dispose the spring washer (14) 26
on the holding bracket of the SCR catalytic
converter (4).

i]

This is done by bending up the individual
locking fins with a screwdriver.

il

Observe state-specific regulations for

disposal. 27

Loosen the clamp (21) between the flex pipe
and the SCR catalytic converter (4).

Removal of Upstream NOx Sensor

28

Remove the SCR catalytic converter (4)

a

To do this, remove the SCR catalytic
converter (4) from the decoupling
elements (20).

" %
Return the SCR catalytic converter (4)

to the originating parts department. return

Remove and dispose the clamp (21).

il

Observe state-specific regulations for
disposal.

Disconnect the electrical plug connection
(24) NOx sensor control unit upstream of

the SCR catalytic converter (23).

To do this, unlock the gray retaining
tab (24.1) by moving towards the cable
harness.

37

29

30

34

32

Emissions Campaign 2020040008

Remove the NOx sensor control unit upstream of the SCR fi]

catalytic converter (23) from the frame. To do this, remove and dispose nuts (23.1).

Remove and dispose the remaining cable ties and retaining
clips (arrows) from harness (22) of the NOx sensor control

P ‘ Observe state-specific regulations for disposal.
unit upstream of the SCR catalytic converter (23).

Remove NOx sensor upstream of SCR catalytic converter (3).

The control unit for the NO, sensor and the NOx sensor
upstream of the SCR catalytic converter (3) are a single unit.

@ a
Return the NOx sensor upstream of SCR catalytic converter ws
(3) to the originating parts department.

return

Clean the threads and the contact surfaces on the exhaust
pipe.

Removal of Downstream NOx Sensor

33

34

Remove the heat shield (25).

Fa

This is done by bending up the individual
locking fins with a screwdriver and
unscrew the clamping nuts (26) ina
counter-clockwise direction with a
screwdriver.

Dispose the clamping nuts (26).

Fa

Observe state-specific regulations for disposal.

38

® Emissions Campaign 2020040008

35 Disconnect the electrical plug connection
(30) at the downstream NOx sensor

control unit (27).

fi]

To do this unlock the gray retaining tab
(29) by moving in the direction of the
arrow.

36 Remove the downstream NOx sensor control
unit (27).

fi)

To do this, remove and dispose the nut
fasteners (28) and cable ties (31).

fi] S,
Return the downstream NOx sensor control ig
unit (27) to the originating parts department. ws

return

39

® Emissions Campaign 2020040008

Installation of Upstream NOx Sensor

fi]

Completely remove the adhesive labels that are on the
new exhaust system and its components and leave no
residue.

37 Install new NOx sensor upstream of SCR 39 Connect the electrical plug connection
catalytic converter (3) (24) and lock the retaining tab (24.1).
i) fi) il ;
A000 905 85 11 80 (included in Push the gray retaining tab (24.1) in
package A 642 905 20 00 85) the direction of the arrow to lock.
NOx sensor upstream of SCR catalytic
converter. Torque to: 60 Nm / 44.3 ft-lb 40 Secure the harness (22) with cable ties

(arrows), as shown.

38 Install the NOx sensor control unit
upstream of the SCR catalytic converter A000 995 90 06 (1x)
(23) on the frame. A007 997 56 90 (2x)
fi]
Use new fasteners (23.1)
N 000000 003477
NOx sensor control unit. Torque to:
9Nm/6.6 ft'lb

40

®

Emissions Campaign 2020040008

Installation of SCR Catalytic Converter

41 Install a new profile seal (18) on the
AdBlue® injection nozzle (17).

fi)

Clean the sealing surface of the
AdBlue® injection nozzle (17)
before installation. If excess
crystallization of AdBlue® is
present, use water and a non-
abrasive cloth to clean the
AdBlue® injection nozzle (17).

fi)

A 207 492 00 00

42 Position the new clamp (21) on the
exhaust pipe.
[i]
A000 490 13 41

43 Install new SCR catalytic converter (4)

Make sure that the SCR catalytic
converter is correctly seated in the
decoupling elements (20)

fi]

A 906 490 36 00 80

Tighten the new clamp (21).

i]

Screw connection point needs to be
pointed downward.

Clamp diesel particle filter on SCR
catalytic converter. Torque to:

35 Nm / 25.8 ft-lb

Install new spring nut (14) on the
holding bracket of SCR catalytic
converter (4).

Fal

A 123 994 13 45

44

46

47

48

Emissions Campaign 2020040008

Install the AdBlue® injection nozzle (17).

i]

Position the new profile clamp (16) on the
SCR catalytic converter (4) first.

Fa

A000 995 11 33

Fy

Ensure correct positioning of the Adblue®
injection valve (17). The catch (arrows) of
the Adblue® injection valve must sit in the
groove of the exhaust pipe (4)

Install the screw on the new profile clamp
(16) on the AdBlue® injection nozzle (17).

i]

Screw: Torque to 5 Nm/ 3.7 ft-Ib

Install the exhaust gas temperature sensor
(12) upstream of the SCR catalytic
converter.

i]

Apply nickel anti-seize paste to threads
only. Avoid contact to the sensor.

A000 989 76 51 (bulk paste; can be
applied to multiple vans)

li)

Temperature sensor: Torque to
45 Nm / 33.2 ft-lb

42

®

Emissions Campaign 2020040008