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6.3.5 Spark plug – Removal and installation
Preconditions
☑ Engine is stopped and starting disabled.
☑ Open protective packing of new spark plug only immediately prior to installation.
Special tools, Material, Spare parts
Designation / Use
Part No.
Qty.
Torque wrench, 10-60 Nm
F30452769
1
Spark plug socket wrench, 20.8 mm
F30452574
1
Assembly compound (Molykote P 37)
50564
1
Spark plug
(→ Spare Parts Catalog)
Sealing ring
(→ Spare Parts Catalog)
Spark plug connector with ignition cable
(→ Spare Parts Catalog)
Locking plate
(→ Spare Parts Catalog)
WARNING
Component is hot.
Risk of burning!
• Wear protective gloves.
WARNING
Compressed air
Risk of injury!
• Do not direct compressed-air jet at persons.
• Wear protective goggles / safety mask and ear protectors.
Removing spark plug
1.
Remove ignition cable (2) from ignition coil.
2.
Remove screws (4) and locking plate (5)
from cylinder head cover (1).
3.
Remove spark plug connector (3) with igni‐
tion cable (2) from spark plug.
4.
Unscrew spark plug a few threads.
5.
Clean spark-plug recess with compressed
air.
6.
Unscrew spark plug from cylinder head.
7.
Remove the lower gasket on ignition line
(see instructions for changing ignition line
gasket).
142 | Task Description | MS150058/01E 2012-07
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