Maintenance And Inspection - Hitachi CB 18DBL Manual De Instrucciones

MAINTENANCE AND INSPECTION

WARNING: Be sure to tunred off the switch and pull out the battery.
Be sure to wear gloves when handling the band saw blade.
1. Replacing the band saw blade (Fig. 12, 13)
If the band saw blade becomes dull, it can result in
overburdening the motor and the various parts of the
tool as well as decrease effi ciency.
Do not delay in replacing the band saw blade.
2. Blade pulley rubbers inspection (Fig. 15)
The blade pulley rubbers are installed on the outer
circumferences of the blade pulleys (2 places). (Fitted
type)
When replacing the band saw blade, inspect the
blade pulley rubbers for sagging or damage.
If there is sagging or damage, request a replacement
from Hitachi Authorized Service Center, as it may
result in the band saw blade running unstable or
coming loose.
NOTE
Periodically remove any shavings, etc. that has
adhered to the blade pulley rubbers.
Failure to do so may result in slippage of the band saw
blade and/or injury.
Blade pulley
3. Inspection of band saw blade back ball bearing
supports (Fig. 16)
Periodically inspect the band saw blade back ball
bearing supports inside the bearing holders for wear.
If the band saw blade back ball bearing supports are
worn, there will be excessive force on the band saw
blade that could result in damage to the band saw
blade.
If the band saw blade back ball bearing supports
are worn, arrange for replacements from Hitachi
Authorized Service Center.
Blade pulley rubber
Fig. 15
Band saw blade back
ball bearing support
Band saw
blade
4. Inspection of band saw blade guide rollers and
adjustment of gaps (Fig. 17)
After continued use of the unit, the gaps between the
band saw blade guide rollers may become wider.
If the gaps become wider, the band saw blade may till,
resulting in reduced cutting precision.
Periodically inspect whether the gaps between
the band saw blade guide rollers are appropriate
(bearings are lightly touching the band saw blade),
and make any adjustments if necessary.
Additionally, if the band saw blade guide rollers are
damaged, arrange for replacements from Hitachi
Authorized Service Center.
1 Open the blade pulley cover and remove the band
saw blade.
(See Fig. 12 for band saw blade removal)
2 Use a Phillips head screwdriver to loosen the
screws and remove the bearing holders (A) and
(B) from the unit.
3 Use a fl athead screwdriver to loosen the bearing
pins.
Place the band saw blade between the guide
rollers and tighten the bearing pins, adjusting as
necessary to make sure that the blade is lightly in
contact with the supports.
4 Place bearing holders (A) and (B) back into the
unit and install the band saw blade.
(See Fig.13 for band saw blade installation)
English
Guide rollers
Fig. 16
21