Removing and Installing/Replacing Right Exhaust Camshaft

11 31 038 - Removing and installing / replacing right exhaust camshaft (S85)





Special tools required:
- 11 5 241 11 5 240 Press-Down Device
- 11 5 242 11 5 240 Press-Down Device
- 11 5 243 11 5 240 Press-Down Device





Necessary preliminary tasks:
- Remove right cylinder head cover Removing and Installing/Sealing Right Cylinder Head Cover
- Remove right VANOS adjustment unit Removing and Installing / Replacing Right VANOS Adjustment Unit (S85)
- Remove right VANOS exhaust gear Removing and Installing/Replacing Right Exhaust VANOS Gear (S85)





Important!
Use only special tool 11 5 241 11 5 240 Press-Down Device to remove and install camshafts.

To remove and install the exhaust camshafts, special tool 11 5 243 11 5 240 Press-Down Device is not required and must be removed from special tool 11 5 241 11 5 240 Press-Down Device.





Secure special tool 11 5 241 11 5 240 Press-Down Device to cylinder head on left with special tool 11 5 242 11 5 240 Press-Down Device.

Important!
Screw in special tool 11 5 242 11 5 240 Press-Down Device to max. 30 Nm.

Pretension eccentric shaft (2) at hexagon head in direction of arrow.

Lock (1) must snap audibly into place.





Release screws (1).
Tightening torque: 11 31 7AZ 11 31 Camshaft.
E - Inlet camshaft.
A - Exhaust camshaft.

Important!
Risk of mix-up with cylinder bank 6-10.
Arrow must point in direction of travel to chain drive.

Remove bearing caps.

Installation:
Lubricate all bearing points with engine oil.





Release screws along lines (1).
Tightening torque: 11 31 7AZ 11 31 Camshaft.

Installation:
Lubricate all bearing points with engine oil.

Note:
Illustration does not show special tool 11 5 241 11 5 240 Press-Down Device.





Release lock (1) on special tool 11 5 241 11 5 240 Press-Down Device.
Relieve tension on eccentric shaft at hexagon head in direction of arrow.

Important!
Inlet camshaft is pressed upwards by valve springs.
Exhaust camshaft must lift off uniformly in upward direction.





Insert exhaust camshaft, cylinders 1-5.
Designation (A 2) on dihedron points upwards.

Installation:
Lubricate all bearing points with engine oil.





Installation:
All bearing shells are assigned to one cylinder.
E and A from (1 to 10), e.g. A 1= exhaust side on 1st cylinder.
Arrow (1) must point in direction of travel to chain drive.





Installation:
Arrangement of bearing shells, cylinders 1 to 5.

Important!
Mixing them up will result in increased wear - risk of damage!





Mount special tool 11 5 241 11 5 240 Press-Down Device with special tool 11 5 242 11 5 240 Press-Down Device.
Pretension eccentric shaft (1) at hexagon head in direction of arrow.

Important!
Exhaust camshaft is pressed upwards by valve springs.

Lock must snap audibly into place.

Install all bearing caps by numbers.
Tightening torque: 11 31 7AZ 11 31 Camshaft.





Adjust valve timing .
Assemble engine.