Checking cylinder head for watertightness
CAUTION:
Spring preload
.
Injury hazard!
Injury hazard!
- The use of the specified special tool (tool) is mandatory.
- Carry out the described steps properly.
NOTE:
RISK OF DAMAGE
Contaminant or foreign body .
Contamination can result in malfunctions, loss of function or leaks .
Contaminant or foreign body .
Contamination can result in malfunctions, loss of function or leaks .
- Adhere to the utmost cleanliness.
- Protect components from contamination e.g. by covering.
- Close off line connections with seal plugs.
Preliminary work
- Refer to REMOVING THE EXHAUST TURBOCHARGER (CYLINDER HEAD REMOVED) .
- Refer to MOUNTING THE CYLINDER HEAD ON THE ASSEMBLY JIG .
- Refer to ADJUSTING THE ECCENTRIC SHAFT TO THE MINIMUM LIFT (CYLINDER HEAD REMOVED) .
- Refer to REMOVING THE TORSION SPRINGS (CYLINDER HEAD REMOVED) .
- Refer to REMOVING ALL GATES .
- Refer to REMOVING ALL INTERMEDIATE LEVERS .
- Refer to REMOVING THE INTAKE CAMSHAFT (CYLINDER HEAD REMOVED) .
- Refer to REMOVING THE SERVOMOTOR FOR THE ECCENTRIC SHAFT (CYLINDER HEAD REMOVED) .
- Refer to REMOVING THE ECCENTRIC SHAFT (CYLINDER HEAD REMOVED) .
- Refer to REMOVING THE EXHAUST CAMSHAFT (CYLINDER HEAD REMOVED) .
- Refer to REMOVING ALL ROLLER CAM FOLLOWERS .
- Refer to REMOVING ALL HYDRAULIC VALVE CLEARANCE COMPENSATING ELEMENTS .
- Refer to REMOVING ALL VALVE SPRINGS .
- Refer to REMOVING VALVE STEM SEALS .
- Refer to REMOVING ALL VALVES .
- Get the set of special tools 2 361 215
ready.
- Have the special tool 2 456 190
ready.
- Position the cylinder head (1) on the special tool 2 361 215 so that the rubber layer faces the cylinder
head (1) and all water ducts at the cylinder head (1) are closed.
- Feed in the screws (1) to (14) on the cylinder head (A).
- Tighten screws in the order (1) to (14).TIGHTENING TORQUES SPECIFICATION
Cylinder head to special tool 2 361 215 35 Nm - Insert and install the special tool 2 456 190 at the cylinder head (2).
- Tighten down screws (2).NOTE: Use screws of the coolant line between the cylinder head and the coolant pump.TIGHTENING TORQUES SPECIFICATION
Special tool 2 456 190 to cylinder head M6X20 Tightening torque 8 Nm - Release venting connector (1).
- Feed out and remove venting connector (1).
- Mount the valve of the special tool 2 361 215 on the cylinder head.
TIGHTENING TORQUES SPECIFICATION
| Venting connector/special tool to cylinder head | |
|---|---|
| M10 | 18 Nm |
Check
- Heat up the cylinder head.TECHNICAL DATA SPECIFICATION
Check for cylinder head watertightness Temperature of the cylinder head 60°C - Connect compressed air.TECHNICAL DATA SPECIFICATION
Check for cylinder head watertightness Testing pressure max. 3.0 bar - Check the cylinder head in for tightness in a water bath.
Result
» Air bubbles develop.
Measure
- Check the cylinder head for damage at the point of exit of the air bubbles.
Measure
- Repair or replace cylinder head.
- Disassemble the valve of the special tool 2 361 215
.
- Install the venting connector (1).TIGHTENING TORQUES SPECIFICATION
Venting connector/special tool to cylinder head M10 18 Nm - Loosen screws (2).
- Guide out and remove the special tool 2 456 190
from the cylinder head (2).
- Release screws in the sequence (14) to (1) from the cylinder head (A).
- Feed out and remove screws (14) to (1).
- Feed out and remove cylinder head (1) from the special tool 2 361 215 .
Follow-up work
- Refer to INSTALLING ALL VALVES .
- Refer to INSTALLING VALVE STEM SEALS .
- Refer to INSTALLING ALL VALVE SPRINGS .
- Refer to INSTALLING ALL HYDRAULIC VALVE CLEARANCE COMPENSATING ELEMENTS .
- Refer to INSTALLING ALL ROLLER CAM FOLLOWERS .
- Refer to INSTALLING EXHAUST CAMSHAFT (CYLINDER HEAD REMOVED) .
- Refer to INSTALLING THE ECCENTRIC SHAFT (CYLINDER HEAD REMOVED) .
- Refer to INSTALLING THE SERVOMOTOR FOR THE ECCENTRIC SHAFT (CYLINDER HEAD REMOVED) .
- Refer to INSTALLING THE INTAKE CAMSHAFT (CYLINDER HEAD REMOVED) .
- Refer to CHECKING THE INTERMEDIATE LEVER CLASSIFICATION .
- Refer to INSTALLING ALL INTERMEDIATE LEVERS .
- Refer to INSTALLING ALL GATES .
- Refer to ADJUSTING THE ECCENTRIC SHAFT TO THE MINIMUM LIFT (CYLINDER HEAD REMOVED) .
- Refer to CHECKING THE POSITION OF THE INTAKE CAMSHAFT (CYLINDER HEAD REMOVED) .
- Refer to INSTALLING THE TORSION SPRINGS (CYLINDER HEAD REMOVED) .
- Refer to REMOVING THE CYLINDER HEAD FROM THE ASSEMBLY JIG .
- Refer to INSTALLING THE EXHAUST TURBOCHARGER (CYLINDER HEAD REMOVED) .