Check AdBlue(R) concentration

AR49.20-D-9264TS

Check AdBlue(R) concentration

30.11.2017

Engine

642 in model 907

Engine

651 in model 907, 910

1

Prism

2

Hinged lid

3

Adjustment screw

4

Eyepiece

5

Refractometer

B

Scale

 Warning

Risk of burn injuries and scalding when working on AdBlue(R) lines and the component parts attached to them. Risk of injury to skin and eyes when handling AdBlue(R). Risk of poisoning caused by swallowing AdBlue(R)

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

AS49.20-Z-0002-01A

Topical note

Notes on use, material properties and handling of NOx reducing agent

AH49.20-N-0002-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A



Remove

1

Adjust the refractometer (5)

AR49.20-D-9264-01TS



000 588 08 21 00 Test and measuring kit

WS14.00-P-0012B

2

Remove cap of AdBlue® tank

 Model 907 with code K52 (lockable DEF filler cap) Models 907, 910 with code K53 (lockable AdBlue filler cap)
To do this, release and unscrew the cap using the vehicle tool kit.

3.1

Remove a small amount of AdBlue® from the filler neck of the AdBlue® tank using a pipette

For a completely charge AdBlue® tank.



000 588 08 21 00 Test and measuring kit

WS14.00-P-0012B

3.2

Suction off a small amount of AdBlue® from the AdBlue® tank

For a not completely charge AdBlue® tank.

AR49.20-D-2014-01TS



000 588 01 71 00 Extraction pump

WS14.00-P-0013B



Check

4

Place 1 to 2 drops of AdBlue® on the prism (1) of the refractometer (5) and close the hinged lid (2)


Only the prism (1) and the folding lid (2) may come into contact with the AdBlue®.
AdBlue® can find its way into the refractometer (5) otherwise and damage it.

5

Bring the scales of scale (B) for AdBlue® into focus by turning the eyepiece (4)

 To do this, look through the eyepiece (4) against a light background when turning.

6

Read off the measurement at the light-dark boundary on the AdBlue® scale (B)

NOx reducing agent urea content

*BE49.20-N-1001-01A

If necessary



Carefully adjust adjustment screw (3) using a screwdriver so that the light/dark border matches the zero line (water line).

If the AdBlue® concentration in not sufficient.



Replace AdBlue®.

AR49.20-D-2015TS



Clean

7

Carefully remove any AdBlue® from the prism (1) and hinged lid (2)


Only the prism (1) and the hinged lid (2) should come into contact with the fluid.
AdBlue® can find its way into the refractometer (5) otherwise and make it unusable.

 Only use water without any additive as a cleaning agent.



Install

8

Install the cap of the AdBlue® tank

NOx reducing agent check values

Number

Designation

Engine 642, 651

BE49.20-N-1001-01A

NOx reducing agent urea content

New

%

32,5

Replace at

%

 31,8