Remove/install fuel filter water level sensor · ar4750s0100sd · Mercedes-Benz WIS

AR47.50-S-0100SD

Remove/install fuel filter water level sensor

2.6.09

ENGINES 646 in MODEL 636, 639 with CODE (KL5) Fuel filter with water separator

N47.50-2004-06

1 Fuel pipe

2 Drain pipe

3 Electrical connector

4 Bolts

5 Sealing rings

6 Fuel filter water level sensor

 	Remove/install
 Danger!	Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
 Danger!	Risk of explosion. Fuel may ignite and explode. Risk of injury to skin and eyes caused by fuel spraying out at high pressure.	Keep all ignition sources out of hazard area. Do not carry out any work on systems when they are under pressure	AS07.16-Z-0001-01A
 Danger!	Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel and risk of injury to eyes and skin caused by contact with fuel	No fire, sparks, open flames or smoking. Pour fuels only into suitable and appropriately marked containers. Wear protective clothing when handling fuel.	AS47.00-Z-0001-01A
1	Remove air filter housing		AR09.10-S-1150S
2	Remove/install fuel main filter		AP47.20-S-0780B
3	Remove bolts (4)		*BA47.50-N-1001-01A
4	Remove the fuel filter water level sensor (6)	 To do this turn fuel filter water level sensor (6) through 30° clockwise and remove upwards; clean surrounding environment if necessary.
		 Installation: Install new sealing rings (5) and moisten with fuel.
5	Reinstall in opposite order
	Checking
6	Check for leaks with engine running

 Sensors

Number	Designation		Engine 646.98 in model 636, 639


BA47.50-N-1001-01A	Bolt, fuel filter water level sensor to fuel filter	Nm	2

ap4720s0780b Replace fuel filter
ar0910s1150s Remove/install air filter housing
as0000z000501a 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.
as0716z000101a Risk of explosion caused by fuel igniting. Risk of injury to skin and eyes caused by fuel spraying out at high pressure
as4700z000101a Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel.