11 12 101 Replacing cylinder head gasket (N55 Hybrid)
Special tools required:
WARNING:
High-voltage hazard!
The following must be strictly observed prior to starting work :
- Observe SAFETY INFORMATION for handling hybrid cars.
IMPORTANT:
Aluminum screws/bolts must be replaced each time they are released
.
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Joining torque and angle of rotation must be observed without fail (risk of damage) .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Joining torque and angle of rotation must be observed without fail (risk of damage) .
Necessary preliminary work:
- Remove CYLINDER HEAD .
- Check cylinder head for DEVIATION FROM FLATNESS .
- Check cylinder head for WATERTIGHTNESS .
Remove cylinder head gasket.
Insert special tool 11 4 430 into feed pipe of oil pump.
Remove remnants of oil and dirt from blind holes (1).
IMPORTANT:
Work on sealing surface on engine block and on cylinder head with special tool 11 4 470
only.
Do not use any metal-cutting tools.
Do not use any metal-cutting tools.
Check adapter sleeves (1) for damage and firm seating.
Cylinder head gasket N55 is a beaded metal gasket.
Place cylinder head gasket (2) in direction of arrow on engine block.
Fix new cylinder head gasket with fitting sleeves (1).
Assemble engine.