Repair
Service and Repair Manual
Rocker arms
Reference
Key
Screw specifications
Lubricant *
Reuse**
Torque
Angle (°)
Step
± 5%
Step
± 5°
1
081AC
ISO 4762 M12x1.75x150-10.9
O
Yes
1 100 Nm
74 ft-lb
-
-
Tab. 19: Tightening specifications table
*Lubricants:
MG = Molykote G-n-plus
MW = Castrol Optimol paste white T
MH = Molykote HSC
O = Engine oil
XX = Loctite 243
YY = Loctite 577
**Refer to screws reuse rules.
(For more information see: 5.3.2 Screws pre-tightening, reuse and
3.3.3 Rocker arms housing removal and installation
Previous tasks
q
Drain HT coolant.
q
Remove turbochargers.
(For more information see: 3.8.3 Exhaust gas turbocharger removal
and installation (SL 213), page 170.)
.
q
(For more information see: 3.8.5 Turbocharger brackets
removal and installation, page 180.)
q
Remove retaining plate.
(For more information see: 3.6.4 Injector removal and installation (SL
.
q
Remove inlet and outlet rocker arms.
(For more information see: 3.3.2 Inlet and outlet rocker
arms removal and installation, page 76.)
q
(For more information see: 3.6.2 High pressure pipes removal
Specific safety instructions
– Set cylinders to ignition TDC position.
Special tools
Special tool
Designation
Coolant connector pipe tool
Tab. 20: Special tools
82
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KD83V16 33525088901_2_1 EN_US
2021-07