Remove/install filler neck for AdBlue container - AR14.40-P-2028GY

ENGINES 642.886 in MODEL 463 

Fig 1: Identifying Filler Neck, Rubber Seal, Filling And Bleed Hose

Courtesy of MERCEDES-BENZ USA

	Remove/install
	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
	Notes on use, material properties and handling of AdBlue®		AH14.40-N-0001-01AB
		All tools and vehicle parts coming into contact with AdBlue® must be thoroughly cleaned with water immediately after use.
1	Remove right rear wheel well cover
2	Unscrew screw cap on filler neck (1)
3	Detach filling and bleed hose (3); detach clamps to do this	Installation  : Check filling and bleed hose (3); replace if necessary. Installation  : Replace clamps.
4	Remove filler neck (1) from body; remove bolts to do this
5	Remove filler neck (1) downwards	Installation  : Check rubber seal (2) on filler neck (1) and on body for correct seating.
6	Install in the reverse order