Remove/Install Fuel Level Sensor - AR47.10-P-7000GQ

Model 166 with engine 157, 276, 278, 642, 651 

Model 292 with engine 157, 276, 278, 642 

Fig 1: Fuel Level Sensor Components Location - Model 166 With Engine 157, 276, 278, 642

Courtesy of MERCEDES-BENZ USA

Illustration shows model 166.024 

	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove fuel tank	Model 166 with engine 157, 276, 278, 642, 651 Model 292 with engine 278, 642	AR47.10-P-4100GQ
2	Remove left or right lock ring	Model 166 with engine 157, 276, 278, 651 Model 166, 292 with engine 642	AR47.10-P-4100-02GQ
		Ring nut to fuel tank	*BA47.10-P-1004-01J
		Prong wrench	Fig 3
3	Pry off fuel pump (M3) or transfer unit (1) with attached lines	Do not deform float linkage (2). The fuel level fill level will be indicated falsely otherwise. Allow escaping fuel to flow off into the fuel tank or catch it with absorbent rags.
4	Release and disconnect electrical connection (3)
5	Remove left fuel tank fuel level indicator fill level sensor (B4/1) or right fuel tank fuel level indicator fill level sensor (B4/2)	Do not deform float linkage (2). The fuel level fill level will be indicated falsely otherwise. Lift left fuel tank fuel level indicator fill level sensor (B4/1) or right fuel tank fuel level indicator fill level sensor (B4/2) somewhat as shown using a wedge and push out of guide.
		Long wedge	Fig 2
6	Install in the reverse order
7	Clear fault memory using the diagnostic system
			AD00.00-P-2000-04A
	Check
	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
8	Carry out engine test run and check fuel system for leaktightness

Fig 2: Identifying Long Wedge (115 589 03 59 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Prong Wrench (164 589 01 07 00)

Courtesy of MERCEDES-BENZ USA