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

AR07.04-P-0008A

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

8.10.10

 

Remove/install

 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 cylinder head cover trim

Engine 646, 647

AR01.20-P-5014-02A

Engine 648.

AR01.20-P-5014-02C

2

Unplug electrical connector (2) from the fuel temperature sensor (B50)

3

Clean high-pressure pump (1) in the area of fuel temperature sensor (B50) with cold cleaning solvent and blow dry with compressed air

 Depending on installation position, use an absorbent, lint-free cloth to collect any fuel that runs out.

*BR00.45-Z-1051-04A

4

Remove fuel temperature sensor (B50)

 Vacuum up any particles, like paint, from around hole.

 Fuel temperature sensor to high-pressure pump.

*BA07.04-P-1007-01G

5

Remove sealing ring (3) from fuel temperature sensor (B50)

 Installation: The sealing ring (3) must always be replaced.

 Vacuum up any paint and dirt particles, particularly from out of the hole.

6

Install in the reverse order

 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

7

Check fuel system for leaks with engine running

 Visual inspection.

Number

Designation

Engine
646.951/
961/962/
963/966

Engine
646.8 with
code 474

Engine
647

BA07.04-P-1007-01G

Fuel temperature sensor to high-pressure pump

Nm

23

23

23

Number

Designation

Engine
648.960 without Code 474

Engine
648.961 without code 494

BA07.04-P-1007-01G

Fuel temperature sensor to high-pressure pump

Nm

23

23

Number

Designation

Order number

BR00.45-Z-1051-04A

Cold degreasing agent/cold cleaning solvent HAKU 1025-920

Chemische Werke Kluthe GmbH
Gottlieb-Daimler-Str. 12
69115 Heidelberg
Germany
Tel. +49 6221 5301-0
Fax + 49 6221 5301-176
www.wuerth.de