Hitachi CB 13F - Troubleshooting Guide; General Troubleshooting

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22
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English
TROUBLESHOOTING GUIDE
WARNING
•
To avoid injury from an accidental start, turn the switch OFF and remove the plug from the power source
before making any adjustments.
•
All electrical or mechanical repairs should be done only by qualifi ed service technicians. Contact Hitachi
Authorized Service Center.
GENERAL
PROBLEM
PROBABLE CAUSE
REMEDY
Blade does not run in the
center of the upper wheel.
1. Not tracking properly.
2. Defective blade.
1. Adjust tracking. See ASSEMBLY AND
ADJUSTMENTS section BLADE
TRACKING
2. Replace blade.
Band saw slows down
when cutting.
1. Belt too loose.
2. Cutting too small a radius.
3. Dull blade.
4. Overloading moto
1. Adjust belt tension. See ASSEMBLY
AND ADJUSTMENTS section BLADE
TENSION.
2. Stop feeding, back up the material
slightly, until the band saw speeds up.
3. Replace blade.
4. Slow down, trying to cut too fast.
See MOTOR TROUBLESHOOTING
GUIDE on page 23.
Blades braking.
1. Too much tension on the blade.
2. Kink in the blade caused by cutting too
small a radius or turning the material too
fast when cutting.
1. Adjust tension. See ASSEMBLY AND
ADJUSTMENTS section BLADE
TENSION
2. Use correct cutting technique. See
OPERATION section GENERAL
CUTTING.
Blade dulls too quickly.
1. Blade guides set too close to the teeth.
2. Cutting incorrect material.
1. Adjust upper and lower blade guides.
2. See OPERATION section BLADE
SELECTION.
Band saw vibrates.
1. Too much tension on motor belt.
1. Adjust according to ASSEMBLY AND
ADJUSTMENTS section, INSTALL
THE BELT.