Remove/install high-pressure pump's fuel temperature sensor

AR07.04-P-0008FF

Remove/install high-pressure pump's fuel temperature sensor

23.04.2019

Engine

639.939 in model 454.0

1

Connector

B50

Fuel temperature sensor

 

Remove/install

 Danger

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.

No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only.
Wear protective clothing when handling fuel.

AS47.00-Z-0001-01A

 Danger

Risk of explosion caused by fuel igniting. 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 system when it is pressurized.

AS07.16-Z-0001-01A

1

Remove air filter housing upper part

AR09.10-P-1150-02FG

2

Pull plug (1)

3

Remove fuel temperature sensor (B50)

Notes about Common-Rail components

AH07.16-P-0002-01TX

 Installation: Replace sealing ring.

 Fuel temperature sensor to high-pressure pump

*BA07.16-P-1011-01G

4

Install in the reverse order

 Warning

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

5

Perform engine test run and check leak tightness of the fuel system in the area of the fuel temperature sensor (B50)

6

Read out fault memory



AD00.00-P-2000-04FF

 Common rail diesel injection (CDI)

Number

Designation

Engine 639.9

BA07.16-P-1011-01G

Fuel temperature sensor to high-pressure pump

Nm

15