Maintenance And Inspection - Hitachi G12SN Manual De Instrucciones

English
Wrench
Depressed
center
wheel
Wheel
washer
Spindle

MAINTENANCE AND INSPECTION

WARNING
Be sure to switch power OFF and disconnect the plug from the receptacle during maintenance and inspection.
Using cracked, deformed or damaged wheels can lead to wheel breakage and resulting serious injury.
1. Replacing the depressed center wheel
Replace the depressed center wheel when it has been
worn out to about 2-3/8" (60mm) in external diameter.
Confirm that there is no crack or any damage to the
depressed center wheel. If there is a crack or a
transformation in the wheel, replace it immediately.
2. Inspecting the screws
Regularly inspect all screws and ensure that they
are fully tightened. Should any of the screws be
loosened, retighten them immediately.
WARNING
Using this grinder with loosened screws is
extremely dangerous.
3. Confirm that there is no damage in the wheel
guard, the electrical cord and the housing, etc.
Check that the on/off switch operates normally.
4. Inspecting the carbon brushes
For your continued safety and electrical shock
protection, carbon brush inspection and
replacement on this tool should ONLY be performed
by a HITACHI AUTHORIZED SERVICE CENTER.
5. Replacing supply cord
If the supply cord of Tool is damaged, the Tool
must be returned to Hitachi Authorized Service
Center for the cord to be replaced.
12
Wheel
nut
Wheel
guard
Push button
Fig. 5
CAUTION
Tighten the wheel nut securely and confirm that
the depressed center wheel does not wobble.
2. Disassembly
To remove the depressed center wheel, simply
reverse the above-mentioned procedure.
6. Service and repairs
All quality power tools will eventually require
servicing or replacement of parts because of wear
from normal use. To assure that only authorized
replacement parts will be used, all service and
repairs must be performed by a HITACHI
AUTHORIZED SERVICE CENTER, ONLY.
7. Maintenance of the motor
WARNING
Always wear protective goggles and dust
respirators when blowing air from the tail cover
air hole with the use of an air gun, etc.
Failure to observe this may result in ejected dust
being inhaled or entering your eyes.
The coil on the motor is an important part of the
unit. Make sure that it is not damaged or subject
to oil or water.
NOTE
When work has been finished, blow air containing
no moisture from the tail cover air hole with the
use of an air gun, etc., while running the motor
without any load applied. This is effective in
removing any dirt and dust that has accumulated.
Dirt and dust collecting inside the motor may result
in malfunctions.