Remove/install pump module for exhaust aftertreatment system

AR14.40-B-2007A

Remove/install pump module for exhaust aftertreatment system

07.11.2019

Engine

924.9 in model 368, 384.0/2, 685.282/284/289/290, 979.2

Engine

926.9 in model 368, 382.17/18, 384.0

Modification notes

11.11.2011

Work step 4

Valid only for vehicles with CODE (HV1) AdBlue heating

Represented in model 382.17

1

AdBlue pipe opening (suction)

4

Compressed air connector

7

Electrical connector

2

AdBlue pipe opening (inlet)

5

Coolant pipe opening (outlet)

8

Pump module

3

AdBlue pipe opening (return)

6

Coolant pipe opening (inlet)

9

Fastening nuts

10

Fastening screws

 

Remove/install

 Warning

Risk of burn injuries and scalding when working at AdBlue lines and the components attached to them. Risk of injury to skin and eyes when handling AdBlue. Risk of poisoning caused by swallowing AdBlue

Pour AdBlue into suitable containers only. Wait until the pressure is released before starting any work on the exhaust aftertreatment system.

AS14.40-Z-0001-01A

1

Open the access cover

Notes on use, material properties and handling of AdBlue®

AH14.40-N-0001-01A

2

Turn off ignition

 Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

3

Relieve the cooling system pressure

Topical note

Notes on coolant

AH20.00-N-2080-01A

4

Remove coolant pipe on pipe nozzle (5,6)

Only vehicles fitted with AdBlue heating

 Catch the coolant in an appropriate container.

 Installation: Replace the O-ring. Identify the coolant pipes with their respective coolant pipe openings (5, 6). After installing the pump module (8), refill the cooling system with the collected coolant.

 Clamp

*000589543700

5

Detach the electric connector (7) from the pump module (8)

 Do not let the connector (7) contact the AdBlue. This may cause damage to the harness and SCR control unit.

6

Check the electric wiring harness

.

AR14.40-B-2033B

7

Remove the compressed air connector (4) at the pump module (8)

 Socket connection system of - "SCHÄFER SDF" compressed air in metallic material

*BA00.18-B-1003-01A

8

Open the insulation hose in the AdBlue pipe nozzle area (1,2,3) to a length of approximately 15 cm and move it backwards

 Roller tongs

*950589013700

9

Detach the piping (1) on the AdBlue suction nozzle

10

Loosen the tube lines (2,3) from the AdBlue inlet nozzles

 Identify the AdBlue pipes with their respective AdBlue pipe nozzles (2,3).

 Installation: Replace the O-ring. Observe the identification of the pipes (2,3).

 Clamp

*000589543700

11

Remove the fastening nuts (9)

 .Pump module on support

*BA14.40-B-1010-02B

12

Remove the bolts (10) and separate the pump module (8) from the support

 .Pump module on support

*BA14.40-B-1010-02B

13

Install in reverse order

14

Charge the pressure accumulator of the pump module

Only if the replacement of the pump module (8) is needed.



.

AP14.40-B-1490BA

15

Check the pipes connection area for tightness

 Just visual inspection.

 Compressed air piping

Number

Designation

Model all (BUS, TRUCK)

BA00.18-B-1003-01A

Socket connection system of - "SCHÄFER SDF" compressed air in metallic material

M10

Nm

5

 Exhaust gas after-treatment

Number

Designation

Engine 924.9, 926.9 except Liquid Only

BA14.40-B-1010-02B

Pump module on support

Nm

60