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Condition
6. Noisy
1. Backlash between hook gear
operation
and lower shaft gear is too
great.
2. Lower shaft gear is loose.
3. Inappropriate belt tension.
4. Not enough oil.
5. Upper shaft gear is loose.
7. Deformation
1. Inappropriate feed balance.
pattern
2. Top tension is too strong.
WHAT TO DO WHEN
Cause
Eliminate the backlash.
Eliminate the looseness.
See part removal and replacement
"Driving motor (DC motor)".
Oil all moving parts.
Eliminate the looseness.
Adjust the feed balancing dial.
See mechanical adjustment
"Top tension".
3
How to fix
Reference
P. 33
P. 17
P. 16
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