Replace combustion chamber pressure sensor

AR07.04-P-0065-01LFD

Replace combustion chamber pressure sensor

Engine

642

with code 927 (EU6 emissions standard)

 Sensors

Number

Designation

Engine 642

BA07.04-P-1018-01G

Combustion chamber pressure sensor to cylinder head

Stage 1

Nm

5

Stage 2

°

90

B4/34

Cylinder 1 combustion chamber pressure sensor

B4/35

Cylinder 2 combustion chamber pressure sensor

B4/36

Cylinder 3 combustion chamber pressure sensor

B4/37

Cylinder 4 combustion chamber pressure sensor

B4/38

Cylinder 5 combustion chamber pressure sensor

B4/39

Cylinder 6 combustion chamber pressure sensor

1

Disconnect electrical connection for respective combustion chamber pressure sensor (B4/34, B4/35, B4/36, B4/37, B4/38, B4/39).

 Installation: Ensure that electrical connection is mounted and locked correctly.

2

Clean area around the combustion chamber pressure sensor (B4/34, B4/35, B4/36, B4/37, B4/38, B4/39).

3

Remove respective combustion chamber pressure sensor (B4/34, B4/35, B4/36, B4/37, B4/38, B4/39) from cylinder head.

 A removed combustion chamber pressure sensor (B4/34, B4/35, B4/36, B4/37, B4/38, B4/39) must not be reused and must be replaced.
Orderly installation is not guaranteed otherwise.

4

Check slot and seat of the combustion chamber pressure sensor (B4/34, B4/35, B4/36, B4/37, B4/38, B4/39) for soiling and damage.

 The slot and seat of the combustion chamber pressure sensor (B4/34, B4/35, B4/36, B4/37, B4/38, B4/39) must metallic bright.

5

Clean the slot and seat of the combustion chamber pressure sensor (B4/34, B4/35, B4/36, B4/37, B4/38, B4/39) as well as the thread in cylinder head.

 Repeat the cleaning process until the slot and seat are metallic bright. Blow out cleaning residues carefully with air.
Leakage and damage can occur on the cylinder head otherwise.