Check AdBlue® concentration - AR14.40-P-2041GZB: Notes

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ENGINES 642 with CODE (U42) BlueTEC (SCR) diesel exhaust treatment

Fig 1: Identifying AdBlue® Refactometer Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Removing
	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®	Fill AdBlue® only into suitable containers. Wait until the pressure is released before starting any work on the exhaust aftertreatment system.	AS14.40-Z-0001-01A
1	Attach rear fender protector and expose filler opening of the AdBlue® tank in the cargo area	Fender and rear apron protector gotis://K_68-80_01.0
2	Adjust refractometer (5) to determine the AdBlue® concentration	BLUETEC measurement	AR14.40-P-2041-01GZB
3	Remove a small amount of AdBlue® from the AdBlue® tank using the siphon
	Notes on use, material properties and handling of AdBlue®		AH14.40-N-0001-01AB
4	Place 1 to 2 drops of AdBlue® on the prism (1) of the refractometer (5)	Only the prism (1) and hinged lid (2) may come into contact with AdBlue® otherwise AdBlue® can find its way into the interior of the refractometer (5) and make it unusable. The refractometer (5) is very sensitive to impacts and scratching. Closing the hinged lid (2) causes the AdBlue® to be distributed evenly.
5	Look through the eyepiece (4) against a light background.	Bring the scales into focus by turning the eyepiece (4).
	Checking
6	Read off the measurement at the light-dark boundary on the AdBlue® scale (B)	AdBlue® urea content If the AdBlue® concentration is too low, empty the AdBlue® tank and replace the AdBlue®: ↓ Empty, fill AdBlue tank	*BE14.40-P-1001-02A
		BLUETEC- AdBlue® extraction pumps	AR14.40-P-2014-02GZB
		AdBlue® container	*BF14.40-P-1001-01A
	Clean
7	Carefully remove any AdBlue® from the prism (1) and hinged lid (2)	Only the prism (1) and hinged lid (2) may come into contact with liquid otherwise liquid can find its way into the interior of the refractometer (5) and make it unusable. Only use water without any additive as a cleaning agent.
	Install
8	Install exposed detachable parts over the AdBlue® tank in the cargo area

CHECK VALUES FOR BLUETEC DIESEL EXHAUST TREATMENT (SCR)

Number	Designation			Engine 642
BE14.40-P-1001-02A	AdBlue® urea content	New	%	32.5
BE14.40-P-1001-02A	AdBlue® urea content	Replace at	%	≤ 31.8

FILLING CAPACITY FOR BLUETEC DIESEL EXHAUST TREATMENT (SCR)

Number	Designation			Engine 642 model 164.1	Engine 642 model 164.8
BF14.40-P-1001-01A	AdBlue tank	Filling capacity for the initial filling	Liters	28.1	33.3
BF14.40-P-1001-01A	AdBlue tank	Specifications for service products	Sheet	BB00.40-P-0352-01A	BB00.40-P-0352-01A

FILLING CAPACITY FOR BLUETEC DIESEL EXHAUST TREATMENT (SCR)

Number	Designation			Engine 642 in model 212	Engine 642 in model 221
BF14.40-P-1001-01A	AdBlue tank	Filling capacity for the initial filling	Liters	25.5	26.0
BF14.40-P-1001-01A	AdBlue tank	Specifications for service products	Sheet	BB00.40-P-0352-01A	BB00.40-P-0352-01A

FILLING CAPACITY FOR BLUETEC DIESEL EXHAUST TREATMENT (SCR)

Number	Designation			Engine 642 in model 251	Engine 642 in model 463
BF14.40-P-1001-01A	AdBlue tank	Filling capacity for the initial filling	Liters	29.0	16.0
BF14.40-P-1001-01A	AdBlue tank	Specifications for service products	Sheet	BB00.40-P-0352-01A	BB00.40-P-0352-01A