Roller-Overfeed Belt Tension - Duerkopp Adler 271 Service Manual

2.7.6 Roller-overfeed belt tension

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Regulation and inspection
The tension in the synchronous belts should so be such that the step
lengths are precisely transmitted.
Excessive belt tension can cause heavy wear and malfunctions.
Caution: danger of injury
Turn off the main switch.
The upper and lower belt tension may only be adjusted with the
machine turned off.
Adjusting the upper synchronous belt
–
Undo screw 2.
–
Move lever 3.
Adjust the tension of the synchronous belt 1 as required.
–
Retighten screw 2.
Adjusting the lower synchronous belt
–
Undo screw 6.
–
Move lever 5.
Adjust the tension of the synchronous belt 4.
–
Retighten screw 6.
4 5 6