Remove/install exhaust aftertreatment unit, replace if necessary

AR49.20-G-3000NB

Remove/install exhaust aftertreatment unit, replace if necessary

24.04.2018

Engine

470.9, 471.9 in model 800.110/112

with engine version EEV

Engine

470.9, 471.9 in model 800.110/112

Euro V standard engine version

1

Exhaust aftertreatment unit

7

Electrical connector

13

Heat shield

2

Electrical connector

8

Electrical connector

14

Exhaust tailpipe

3

AdBlue® return line

9

Electrical connector

A60

Exhaust aftertreatment (ACM) control unit

4

AdBlue® pressure line

10

Line package

A67

AdBlue® metering device

5

Exhaust flex pipe

11

Electrical connector

6

Electrical connector

12

Heat shield

Shown: equipped and unequipped EATU

1

Exhaust aftertreatment unit

12

Heat shield

13

Heat shield

15

Carrier

16

Carrier

A

Unequipped EATU (delivery condition)

B

Equipped EATU

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Note on calculation of tightening torque when using insertion or socket tools with various effective lengths

AH00.00-P-0015-01CW

 

Remove/install

1

Switch off ignition.

2

Remove heat shield.

Only if fitted.

3

Disconnect electrical connection (11) from exhaust aftertreatment (ACM) control unit (A60) and remove it.

4

Unfasten line package (10).

5

Remove AdBlue® metering device (A67) and tie up to one side.

 Do not disconnect the electrical connection (2), the AdBlue® return line (3) and the AdBlue® pressure line (4).

 Installation: Install new seal and screw/bolts.

 AdBlue® metering device to EATU

*BA14.40-N-1016-02I

6

Disconnect electrical connections (6, 7, 8, 9).

7

Remove exhaust flex pipe (5).

AR49.10-G-8000N

8

Remove mounting plates over the carriers (15, 16).

 Bolt, mounting plate to exhaust aftertreatment unit carrier

*BA49.10-N-1002-02A

9

Support EATU (1) by means of a pallet forklift and remove it.


Use a suitable base such as a Euro pallet.
The exhaust tailpipe (14) or the EATU (1) can get damaged otherwise.

10

Remove heat shields (12, 13).

Only when replacing the EATU (1).

11

Remove assembly parts of the EATU (1) (see Picture A and Picture B)

Only when replacing the EATU (1).

AR49.20-G-0001-01NB

 Some assembly parts are reused for replacing the EATU (1). This must be removed and attached together with the new parts to the new EATU (1).

 Exhaust temperature sensor to exhaust aftertreatment unit

*BA49.10-N-1004-02A

 NOx sensor to exhaust aftertreatment unit

*BA49.10-N-1005-02A

 NOx sensor control unit to bracket

*BA49.10-N-1006-02A

 NOx sensor control unit bracket to exhaust aftertreatment unit

*BA49.10-N-1007-02A

 Carrier at exhaust aftertreatment unit

*BA49.10-N-1020-02A

12

Install in the reverse order

13

Update documentation.

Only if EATU (1) was replaced.

 The documentation must be updated before the following operation steps was updated.
See information from body manufacturer.

14

Connect diagnostic system.

Only if EATU (1) was replaced.

 See information from body manufacturer.

15

Update software release in exhaust aftertreatment control unit (ACM) (A60).

Only if EATU (1) was replaced.

16

Perform teach-in process on exhaust aftertreatment (ACM) control unit (A60).

Only if EATU (1) was replaced.

AR49.20-G-3001N


After the EATU (1) was replaced, the exhaust aftertreatment (ACM) control unit (A60) must be taught in.
Non-teaching in leads to a renewed workshop visit.

17

End and remove vehicle diagnosis system.

Only if EATU (1) was replaced.

 Exhaust aftertreatment, BlueTec®

Number

Designation

Engine 470.9, 471.9, 473.9

BA14.40-N-1016-02I

AdBlue® metering device to EATU

Nm

10

 Exhaust system

Number

Designation

Engine 470.9, 471.9

BA49.10-N-1002-02A

Bolt, mounting plate to exhaust aftertreatment unit carrier

Nm

225

 Exhaust system

Number

Designation

Engine 470.9, 471.9

BA49.10-N-1004-02A

Exhaust temperature sensor to exhaust aftertreatment unit

Nm

30

 Exhaust system

Number

Designation

Engine 470.9, 471.9

BA49.10-N-1005-02A

NOx sensor to exhaust aftertreatment unit

Nm

50

 Exhaust system

Number

Designation

Engine 470.9, 471.9

BA49.10-N-1006-02A

NOx sensor control unit to bracket

Nm

12

 Exhaust system

Number

Designation

Engine 470.9, 471.9

BA49.10-N-1007-02A

NOx sensor control unit bracket to exhaust aftertreatment unit

Nm

12

 Exhaust system

Number

Designation

Engine 470.9, 471.9

BA49.10-N-1020-02A

Carrier at exhaust aftertreatment unit

M14x1.5

Nm

150