7MS 311, MS 391
Remarks:
1) Loctite 242 or 243, medium strength
2) Loctite 648, high strength
3) Screws with antifricton coated binding head
4) Screws with micro-encapsulated binding head
5) Degrease crankshaft/flywheel and mount oil-free
Use the following procedure when refitting a DG or P screw in an existing thread:
Place the screw in the hole and rotate it counterclockwise until it drops down slightly.
Tighten the screw clockwise to the specified torque.
Coat micro-encapsulated screws with medium-strength threadlocking adhesive before re-installing.
This procedure ensures that the screw engages properly in the existing thread and does not form a new thread
and weaken the assembly.
Power screwdriver setting for polymer: DG and P screws max. 500 rpm
Do not use an impact wrench for releasing or tightening screws.
Do not mix up screws with and without binding heads.
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