Removing and Installing/Replacing Left Inlet Camshaft

11 31 032 - Removing and installing or replacing left inlet camshafts (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 left cylinder head cover [1][2]Removing and Installing/Sealing Left Cylinder Head Cover
- Remove left VANOS adjustment unit Removing and Installing / Replacing Left VANOS Adjustment Unit (S85)
- Remove left VANOS exhaust gear Removing and Installing/Replacing Left Exhaust VANOS Gear (S85)
- Remove left VANOS inlet gear Removing and Installing/Replacing Left Inlet 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 inlet camshafts, insert special tool 11 5 243 11 5 240 Press-Down Device in direction of arrow in 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 (1) at hexagon head in direction of arrow.

Lock (2) 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 1-5.
Arrow (2) must point in direction of travel to chain drive.

Installation:
Lubricate all bearing points with engine oil.





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

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





Release lock on special tool 11 5 241 11 5 240 Press-Down Device.
Relieve tension on eccentric shaft (1) at hexagon head in direction of arrow.
Inlet camshaft is pressed upwards by valve springs.

Important!
Inlet camshaft must lift off uniformly in upward direction.

Remove special tool 11 5 241 11 5 240 Press-Down Device.

Remove inlet camshaft.





Insert inlet camshaft, cylinders 6-10.
Designation (E2) on dihedron points upwards.
Cams (1) on 6th cylinder point downwards.

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. E 6= inlet side on 6th cylinder.
Arrow (1) must point in direction of travel to chain drive.





Installation:
Arrangement of bearing shells, cylinders 6 to 10.

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!
Inlet 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.