Remove/install external pneumatic pressure reduction valve on pump module

AR49.20-G-2049CH

Remove/install external pneumatic pressure reduction valve on pump module

10.08.2018

Engine

457.9, 458.9, 541.9, 542.9, 941.9, 942.9 in model 000.001

with BlueTec

1

Pump module

2

External pneumatic pressure reducing valve

3

Compressed-air line

4

AdBlue® return line

5

AdBlue® return flow

11

AdBlue® feed line

12

Electrical connector

2

External pneumatic pressure reducing valve

6

Banjo union

7

AdBlue® return connection

8

Screw-in bushing

9

Sleeve

10

Nut

A

Shoulder

 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

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

AH00.00-P-0015-01CW

Notes on use, material properties and handling of AdBlue®

AH14.40-N-0001-01A

 

Remove/install

1

Release AdBlue® and coolant line package and press to the side.

 Installation: Replace cable tie.
It is essential to ensure that the AdBlue® and coolant lines are routed absolutely free of tension and that possible chafe marks are prevented.

2

Disconnect electrical connector (12) from pump module (1).

3

Remove pump module (1) from bracket and turn to the side.

 Pump module on bracket

*BA14.40-N-1010-02H

4

Disconnect compressed-air line (3) from the external pneumatic pressure reduction valve (2).

 Compressed air line to external pressure relief valve

*BA14.40-N-1053-02H

5

Detach AdBlue® return line (4) from the external pneumatic pressure reduction valve (2) and seal with end cap.



End cap for AdBlue® return line

WF58.50-W-1440-06A

6

Detach AdBlue® feed line (11) from the external pneumatic pressure reduction valve (2) and seal openings with end caps.



End cap for AdBlue® intake duct and AdBlue® feed line

WF58.50-W-1440-05A



End cap for AdBlue® feed connection on pump module and AdBlue® feed and return connection on AdBlue® container

WF58.50-W-1440-07A

7

Unscrew nut (10).

8

Remove banjo union (6) upward.

 AdBlue® return connection to banjo union of external pressure reduction valve

*BA14.40-N-1050-02H

9

Remove external pneumatic pressure reduction valve (2) from AdBlue® return (5) of the pump module (1).

 Installation: The shoulder (A) in the inside of the nut (10) must point downward toward the banjo union (6).

 Sleeve for external pressure relief valve to pump module

*BA14.40-N-1049-02H

 Nut to sleeve of external pressure reduction valve

*BA14.40-N-1051-02H

 Screw-in bushing to sleeve for external pressure relief valve

*BA14.40-N-1052-02H

 Compressed air line to external pressure relief valve

*BA14.40-N-1053-02H

 AdBlue® return connection to banjo union of external pressure reduction valve

*BA14.40-N-1050-02H

10

Install in the reverse order.

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 457.9, 458.9

engine 541.9, 941.9

BA14.40-N-1010-02H

Pump module on bracket

Nm

60

60

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 542.9, 942.9

BA14.40-N-1010-02H

Pump module on bracket

Nm

60

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 457.9, 458.9

engine 541.9, 941.9

BA14.40-N-1049-02H

Sleeve for external pressure relief valve to pump module

Nm

45

45

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 542.9, 942.9

BA14.40-N-1049-02H

Sleeve for external pressure relief valve to pump module

Nm

45

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 457.9, 458.9

engine 541.9, 941.9

BA14.40-N-1050-02H

AdBlue® return connection to banjo union of external pressure reduction valve

Nm

16

16

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 542.9, 942.9

BA14.40-N-1050-02H

AdBlue® return connection to banjo union of external pressure reduction valve

Nm

16

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 457.9, 458.9

engine 541.9, 941.9

BA14.40-N-1051-02H

Nut to sleeve of external pressure reduction valve

Nm

40

40

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 542.9, 942.9

BA14.40-N-1051-02H

Nut to sleeve of external pressure reduction valve

Nm

40

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 457.9, 458.9

engine 541.9, 941.9

BA14.40-N-1052-02H

Screw-in bushing to sleeve for external pressure relief valve

Nm

30

30

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 542.9, 942.9

BA14.40-N-1052-02H

Screw-in bushing to sleeve for external pressure relief valve

Nm

30

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 457.9, 458.9

engine 541.9, 941.9

BA14.40-N-1053-02H

Compressed air line to external pressure relief valve

Nm

13

13

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 542.9, 942.9

BA14.40-N-1053-02H

Compressed air line to external pressure relief valve

Nm

13