Remove/install rail pressure sensor

AR07.04-S-0200EG

Remove/install rail pressure sensor

14.12.2018

Model

447, 448 with engine 274

B4/21

Fuel pressure and temperature sensor

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 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

General information on work on gasoline direct injection system

AH07.00-P-2000-01A



Remove

1

Remove ground line from battery

AR54.10-S-0003E

2

Remove trim panel of cylinder head cover

AR01.20-S-5015EG

3

Remove cable duct for engine wiring harness

AR01.00-S-2411-02EG

 M6

*BA00.10-N-1002-01A

 Nut, line to starter

*BA15.30-N-1002-01W



Clean

4

Clean rail in the area of the fuel pressure and temperature sensor (B4/21)



Remove

5

Relieve fuel pressure in fuel high-pressure circuit

AR07.03-S-1460-02EG

6

Remove fuel pressure and temperature sensor (B4/21)



Install

7

Install fuel pressure and temperature sensor (B4/21)

 Replace fuel pressure and temperature sensor (B4/21).

 Pressure and temperature sensor to rail

*BA07.04-N-1001-01N

8

Connect opened connecting point in fuel high-pressure circuit again

AR07.03-S-1010-02EG

 Union nut, high-pressure line to rail

*BA07.03-N-1002-01H

 Union nut, high-pressure line to high pressure pump

*BA07.03-N-1003-01H

9

Attach cable duct to engine wiring harness

AR01.00-S-2411-02EG

 M6

*BA00.10-N-1002-01A

 Nut, line to starter

*BA15.30-N-1002-01W

10

Install trim panel of cylinder head cover

AR01.20-S-5015EG

11

Remove ground line for battery

AR54.10-S-0003E



Check

 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

12

Check for leaktightness with engine running

 Visual inspection only.

 Headless screws/bolts: screws/bolts and nuts, coarse-pitch thread

Number

Designation

8.8

10.9

BA00.10-N-1002-01A

M6

Galvanized

Nm

9

13

Phosphated

Nm

9

12

 Headless screws/bolts: screws/bolts and nuts, coarse-pitch thread

Number

Designation

12.9

BA00.10-N-1002-01A

M6

Galvanized

Nm

16

Phosphated

Nm

14

 Injection nozzles, injection valves, lines

Number

Designation

Engine 274 in model 447, 448

BA07.03-N-1002-01H

Union nut, high-pressure line to rail

Stage 1

Nm

15

Stage 2

°

75

Stage 3

°

25

 Injection nozzles, injection valves, lines

Number

Designation

Engine 274 in model 447, 448

BA07.03-N-1003-01H

Union nut, high-pressure line to high pressure pump

Stage 1

Nm

15

Stage 2

°

75

Stage 3

°

25

 Sensors

Number

Designation

Engine 274 in model 447

Engine 274 in model 448

BA07.04-N-1001-01N

Pressure and temperature sensor to rail

Nm

38

38

 Starter

Number

Designation

Engine 274 in model 447, 448

BA15.30-N-1002-01W

Nut, line to starter

M6

Nm

6

M8

Nm

15