Remove/install rail pressure sensor

AR07.04-S-0200PS

Remove/install rail pressure sensor

18.04.2019

Engine

642 in model 470, 471

1

Screw

4

Heat shield

7

Engine suspension lug on the rear right

2

Bracket

5

Retaining clamp

8

Turbocharger

3

Bolts

6

Bolts

8

Turbocharger

9

Electrical connector

10

Pressure sensor

11

Right rail

 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

 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

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Notes about Common-Rail components

AH07.16-P-0002-01TX



Remove

1

Switch off ignition and store transmitter key outside of transmission range (min. 2  m).

2

Remove heat shield (4) from exhaust gas turbocharger (8).

AR09.40-S-6045PS

3

Unclip electrical wiring harness from retaining clip (5).

4

Remove screws (6) and remove right rear engine lifting lug (7).

5

Disconnect electrical connector (9) from pressure sensor (10).

6

Remove pressure sensor (10) from right rail (11).

 Catch escaping fuel with clean, lint-free dry cloths.



Install

7

Screw pressure sensor (10) into right rail (11).

Note on calculation of tightening torque when using insertion or socket tools with various effective lengths

AH00.00-P-0015-01CW

 Rail pressure sensor at rail

*BA07.16-N-1011-03PS

8

Connect electrical connector (9).

9

Insert right rear engine lifting lug (7) and screw in screws (6).

 Screw/bolt, engine suspension lug to cylinder head

*BA01.30-N-1001-01PS

10

Clip electrical wiring harness into retaining clip (5).

11

Install heat shield (5) on exhaust gas turbocharger (8).

AR09.40-S-6045PS

 Only install upper engine cover after the leak test.

12

Read out and delete fault memory and perform initialization of pressure sensor (10).

If the pressure sensor (10) is replaced.



AD00.00-S-2000-06P

 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

13

Perform engine test run and check pressure sensor (10) in terms of leak tightness.

14

Install upper engine cover.

 Cylinder head

Number

Designation

Engine 642 in model 470, 471

BA01.30-N-1001-01PS

Screw/bolt, engine suspension lug to cylinder head

Nm

14

 Common Rail diesel injection system

Number

Designation

Engine 642 in model 470, 471

BA07.16-N-1011-03PS

Rail pressure sensor at rail

Nm

70