Remove/install rail pressure sensor

AR07.04-G-0200N

Remove/install rail pressure sensor

08.10.2018

Engine

470.9, 471.9 in model 800.110/112

Modification notes

02.10.2018

Work procedure completely revised.

Shown on engine 471.9

1

Rail

2

Electrical connector

B622

Rail pressure sensor

 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-0001-01B

 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

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-N-5000-01H

 

Remove/install

1

Clean engine in the area of the rail pressure sensor (B622).

2

Disconnect electrical connection (2).

3

Remove rail pressure sensor (B622) from the rail (1).

 Counterhold rail (1) at front on flange with an open end wrench.

 Engine 470.9, 471.9Rail pressure sensor at rail

*BA07.16-N-1034-03A

 Open end wrench attachment, 27_mm

*000589109922

 Torque wrench

*001589672100

4

Install in the reverse order.

5

Start engine and perform an engine test run.

 See information from body manufacturer.
Allow the engine to run at a higher engine speed.

If engine fails to start or only runs for a brief period,



Fill fuel low-pressure circuit.

AR07.16-G-1007N

6

Check area of the rail pressure sensor (B622) for leak tightness.

 Visual inspection.

7

Switch off engine.

 Common rail diesel injection system

Number

Designation

Engine 470.9

Engine 471.9## ## up to 032690

BA07.16-N-1034-03A

Rail pressure sensor at rail

Nm

70

70

 Common rail diesel injection system

Number

Designation

Engine 471.9## ## as of 032691

BA07.16-N-1034-03A

Rail pressure sensor at rail

Nm

70