Remove/Install Adblue Tank - AR14.40-P-2014GQ

Engine 642 in model 292 

with code U77 (Diesel Emission control BLUETEC (SCR)) 

Engine 642, 651 in model 166 

with code U42 (BlueTEC diesel exhaust treatment (SCR)) 

Engine 642, 651 in model 166 

with code U77 (Diesel Emission control BLUETEC (SCR)) 

Shown on model 166.024 

Fig 1: Adblue Tank Components Location - Engine 642 In Model 166 With Codes U42, U77 (Shown On Model 166.024)

Courtesy of MERCEDES-BENZ USA

Shown on model 166.024 

Courtesy of MERCEDES-BENZ USA

	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
	Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on use, material properties and handling of AdBlue®		AH14.40-P-0001-01KOA
	Remove/install
1	Drain AdBlue® tank (1)
	000 588 07 82 00 Filling unit		WS14.00-P-0014B
	000 588 01 71 00 Extraction pump		WS14.00-P-0013B
			AR14.40-P-2014-02GQ
		Engine 642 in model 292 with code U77 (Diesel Emission control BLUETEC (SCR)) Engine 642, 651 in model 166 with code U42 (BlueTEC diesel exhaust treatment (SCR)) Engine 642, 651 in model 166 with code U77 (Diesel Emission control BLUETEC (SCR)) AdBlue® tank	*BF14.40-P-1001-01A
2	Remove the rear, right internal fender		AR88.10-P-1400GQ
	Clean
3	Clean the filler neck (2a) and lines (2b, 2c) around the connecting points	Dirt must not be allowed to find its way into the emission control system. Damage and malfunctions can occur otherwise.
4	Unlock the filler neck (2a) and pull it off the hose fitting	Seal exposed connections with suitable stop plugs or protective covers. Dirt must not be allowed to find its way into the emission control system. Damage and malfunctions can occur otherwise.
		Set of protective covers	Fig 2
		Record plug	Fig 3
5	Unlock the line (2b) and pull off the AdBlue® container (1)	Seal exposed connections using suitable plugs. Dirt must not be allowed to find its way into the emission control system. Damage and malfunctions can occur otherwise.
		Record plug	Fig 3
6	Unlock line (2c) and detach from line (2d)	Seal exposed connections using suitable plugs. Dirt must not be allowed to find its way into the emission control system. Damage and malfunctions can occur otherwise.
		Record plug	Fig 3
7	Release and disconnect AdBlue® (A103/1x1) tank module electrical connection and AdBlue® (A103/2x1) delivery module electrical connection
8	Remove cover (1a) for AdBlue® container (1)
9	Open the bracket (3h) and remove the line (3)	Handle line (3) carefully. Otherwise the fitting (4s) on the AdBlue® delivery module (A103/2) may break off.
10	Support AdBlue® container (1)
	000 588 10 62 00 Support plate		WS26.00-P-3309B
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
11	Remove the retaining bracket (1 h) and unscrew the screws (1s)	Nut/bolt, AdBlue® tank to body	*BA14.40-P-1001-02A
12	Carefully lower the AdBlue® container (1) until electrical connection 1 for the AdBlue® tank module pressure line heater element (A103/1x4) is accessible
	000 588 10 62 00 Support plate		WS26.00-P-3309B
	000 588 11 62 00 Major assembly mount	Lower the AdBlue® container (1) by a maximum of 5 cm. Otherwise the fitting (4s) on the AdBlue® delivery module (A103/2) may break off.	WS01.00-P-0092B
13	Release and disconnect AdBlue® (A103/1x4) tank module pressure line heating element electrical connection 1
14	Unlock the line (3) and pull it off the fitting (4s) at the AdBlue® delivery module (A103/2)	Seal exposed connections using suitable plugs. Dirt must not be allowed to find its way into the emission control system. Damage and malfunctions can occur otherwise.
		Record plug	Fig 3
15	Lower and remove the AdBlue® container (1)
	000 588 10 62 00 Support plate		WS26.00-P-3309B
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
16	Install in the reverse order
17	Connect the diagnostic system and write the AdBlue® container (1) fill level to the AdBlue® control unit (N118/5)	Engine 642, 651 in model 166 with code U42 (BlueTEC diesel exhaust treatment (SCR))
			AD00.00-P-2000-04A

Fig 2: Identifying Set Of Protective Covers (001 589 01 91 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA