Troubleshooting Guide - Hitachi B 16RM Instruction Manual And Safety Instructions

TROUBLESHOOTING GUIDE

TROUBLESHOOTING GUIDE
To avoid injury from an accidental start, turn the switch "OFF" and always remove the plug from the power
source before making any adjustment.
• Consult Hitachi Authorized Service Center if for any reason the motor will not run.
SYMPTOM
Noisy operation
Drill bit burns
Run out of drill bit point - drilled
hole not round.
Wood splinters on underside. 1. No backup material under workpiece.
Workpiece torn loose from
hand.
Drill bit binds in workpiece.
Excessive drill bit runout or
wobble.
Quill returns too slow or too
fast.
Chuck will not stay attached to
spindle. It falls off when trying
to install.
The LASER GUIDE will not
turn on.
WARNING
POSSIBLE CAUSES
1. Incorrect belt tension.
2. Loose spindle pulley.
3. Loose motor pulley.
1. Incorrect speed.
2. Chips not coming out of hole.
3. Dull drill bit.
1. Hand grain in wood or lengths of cutting
fl utes and/or angles not equal.
2. Bent drill bit.
1. Not supported or clamped properly.
1. Workpiece pinching drill bit, or excessive
feed presure.
2. Improper belt tension.
1. Bent drill bit.
2. Worn bearings.
3. Drill bit not properly installed in chuck.
4. Chuck not properly installed.
1. Spring has improper tension.
1. Dirt, grease, or oil on the tapered
insidesurface of chuck or on the
spindle'stapered surface.
1. The batteries are broken.
— 21 —
CORRECTIVE ACTION
1. Adjust tension. See Section "ASSEMBLY
- TENSIONING BELT"
2. Check tightness of retaining nut on
pulley, and tighten if necessary.
3. Tighten set screw in motor pulley.
1. Change speed. See Section "BASIC
DRILL PRESS OPERATION -SPINDLE
SPEEDS"
2. Retract drill frequently to clear chips.
3. Resharpen drill bit.
1. Resharpen drill bit correctly.
2. Replace drill bit.
1. Use backup material. See Section
BASIC DRILL PRESS OPERATION".
1. Support workpiece or clamp it. See
Section "BASIC DRILL PRESS
OPERATION".
1. Support workpiece or clamp it. See
Section "BASIC DRILL PRESS
OPERATION".
2. Adjust tension. See Section "ASSEMBLY
TENSIONING BELT".
1. Replace drill bit.
2. Replace bearings.
3. Install drill properly. See Section
INSTALLING DRILL BIT".
4. Install chuck properly. See Section
"ASSEMBLY - INSTALLING THE
CHUCK".
1. Adjust spring tension. See Section
"ASSEMBLY - ADJUSTMENTS
- QUILLRETURN SPRING".
1. Using a household detergent, clean the
tapered surface of the chuck and spindle
to remove all dirt, grease and oil.
See Section "ASSEMBLY - INSTALLING
THE CHUCK".
1. See INSTALLING BATTERY FOR
LASER GUIDE section.
English