Remove/install muffler with reduction catalytic converter

AR14.40-B-2019TD

Remove/install muffler with reduction catalytic converter

30.10.2019

Engine

457.911 in model 695.023/053

Engine

924 in model 694.000/042

Engine

926 in model 693.298/328/388, 695.010/011/304

1

Support muffler fastening screws

2

Electrical connection of the NOx sensor and control unit assembly (A113)

3

Temperature sensor electric connection after the catalyst (B116)

4

Temperature sensor electric connection before the catalyst (B115)

5

Silencer with catalyser

 

Remove/install

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

1

Turn off ignition

2

Detach the exhaust piping at the muffler inlet with catalyst (5)

 In order to prevent burn injuries, do not carry out the due work when the exhaust piping is hot.

 .Exhaust pipe on silencer

*BA14.40-B-1027-02B

 .Exhaust pipe on silencer

*BA14.40-B-1027-02C

3

Detach the exhaust piping at the muffler outlet with catalyst (5)

 Only for vehicles with CODE (K68) for vertical exhaust piping in the back of the cabin.

 .Exhaust pipe on silencer

*BA14.40-B-1027-02B

4

Detach the electrical connection from the NOx sensor and control unit assembly (A113) (2), the electrical connection of the temperature sensor after the catalyst (B116) (3) and the electrical connection of the temperature sensor before the catalyst (B115) (4)

5

Remove the temperature sensor (B115) at the muffler inlet with catalyst (5)

Remove/install temperature sensor upstream of SCR catalytic converter
.

AR14.40-B-2011TC

Remove/install temperature sensor upstream of SCR catalytic converter.

AR14.40-B-2011TB

 For engines 924.9, 926.9.

 For the 457.9 engines

6

Remove the temperature sensor (B116) at the muffler outlet with catalyst (5)

Remove/install temperature sensor downstream SCR catalytic converter
.

AR14.40-B-2012TC

Remove/install temperature sensor downstream SCR catalytic converter.

AR14.40-B-2012TB

 For engines 924.9, 926.9.

 For engines 457.9

7

Remove the NO x sensor assembly and command unit (A113)

Remove/install NOx sensor with controller unit
.

AR14.40-B-2038TC

Remove/install NOx sensor with controller unit.

AR14.40-B-2038TB

 For engines 924.9, 926.9.

 For engines 457.9

8

Support the muffler with catalyst (5) upon a hydraulic jack

 Use an appropriate support between the muffler (5) and the hydraulic jack.

9

Loosen the muffler fastening screws on the bracket (1)

 .Catalyst on the stringer

*BA14.40-B-1031-02B

 .Catalytic converter on the longitudinal member

*BA14.40-B-1031-02C

10

Remove the muffler with catalyst (5) from the longitudinal member support

11

Install in reverse order

 Exhaust gas after-treatment

Number

Designation

Engine 924.9, 926.9 except Liquid Only

BA14.40-B-1027-02B

Exhaust pipe on silencer

Nm

50

 Exhaust gas after-treatment

Number

Designation

Engine 457.9; 460.984 except Liquid Only

BA14.40-B-1027-02C

Exhaust pipe on silencer

Nm

50

 Exhaust gas after-treatment

Number

Designation

Engine 924.9, 926.9 except Liquid Only

BA14.40-B-1031-02B

Catalyst on the stringer

Nm

51

 Exhaust gas after-treatment

Number

Designation

Engine 457.9; 460.984 except Liquid Only

BA14.40-B-1031-02C

Catalytic converter on the longitudinal member

Nm

51