Test pneumatic working pressure at metering device of exhaust aftertreatment system

AR14.40-W-2025B

Test pneumatic working pressure at metering device of exhaust aftertreatment system

25.7.07



Checking

Danger!

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 from swallowing AdBlue

Only pour AdBlue into suitable containers. Only begin work on the exhaust aftertreatment system after releasing the pressure.

AS14.40-Z-0001-01A



Notes on use, material properties and handling of AdBlue

AH14.40-N-0001-01A

1

Switch off ignition

2

Open maintenance flap

 Danger!

Risk of injury caused by body parts being pinched or crushed as cab is tilted

Ensure that no one is within tilting range of cab as it is being tilted. Always tilt cab all the way to end position and secure with safety strut.

AS60.80-Z-0001-01A

3

Tilt cab



Notes on tilting the cab

AH60.80-N-0003-01A

4

Attach test connection (4) to compressed air inlet for metering device (3)

 Only if no test connection (4) is installed.

The test connection (4) can remain in place after checking in the vehicle.

AR14.40-W-2042B

5

Connect up measuring hose (2) on pressure gauge (1) and test connection (4)



*360589002104



*360589002102

Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running

Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

6

Start engine

 Allow engine to run until the working pressure is built up in the compressed air reservoirs.

7

Check working pressure for a running engine

 When the engine is switched off, the metering device is rinsed with compressed air for a few minutes to prevent deposits from settling.

*BE14.40-N-1002-02B

8

Remove measuring hose (2) on pressure gauge (1) and test connection (4)

 The test connection (4) can remain in place after checking in the vehicle.

 Danger!

Risk of injury caused by body parts being pinched or crushed as cab is tilted

Ensure that no one is within tilting range of cab as it is being tilted. Always tilt cab all the way to end position and secure with safety strut.

AS60.80-Z-0001-01A

9

Lower cab



Notes on tilting the cab

AH60.80-N-0003-01A

10

Close maintenance flap

Number

Designation

Engine
457.9
with code
MS4 or MS5

BE14.40-N-1002-02B

Specified value for operating pressure at compressed air inlet of metering device

bar

5.5 (0.2)