Maintenance And Inspection - Hitachi G 14DL Manual De Instrucciones

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MAINTENANCE AND INSPECTION

WARNING:
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. Check the Screws
Loose screws are dangerous. Regularly inspect
them and make sure they are tight.
CAUTION:
Using this power tool with loosened screws is
extremely dangerous.
3. Maintenance of the motor
The motor unit winding is the very "heart" of the
power tool.
Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.
4. Inspecting the carbon brushes (Fig. 9)
The motor employs carbon brushes which are
consumable parts. Since and excessively worn
carbon brush can result in motor trouble, replace
the carbon brush with new ones when it becomes
worn to or near the "wear limit". In addition,
always keep carbon brushes clean and ensure that
they slide freely within the brush holders.
0.12" (3 mm)
0.45"
(11.5 mm)
NOTE:
When replacing the carbon brush with a new one,
be sure to use the Hitachi Carbon Brush Code No.
999054.
5. Replacing carbon brushes
Take out the carbon brush by first removing the
brush cap and then hooking the protrusion of the
carbon brush with a flat head screw driver, etc., as
shown in Fig. 11.
16
Be sure to turned off the switch and pull out the battery.
Using cracked, deformed or damaged wheels can lead to wheel breakage and resulting
serious injury.
Wear limit
Fig. 9
When installing the carbon brush, choose the
direction so that the nail of the carbon brush agrees
with the contact portion outside the brush tube.
Then push it in with a finger as illustrated in Fig.
12. Lastly, install the brush cap.
Nail of carbon brush
Fig. 10
Fig. 11
Fig. 12
CAUTION:
● Be absolutely sure to insert the nail of the carbon
brush into the contact portion outside the brush
tube. (You can insert whichever one of the two
nails provided.)
● Caution must be exercised since any error in this
operation can result in the deformed nail of the
carbon brush and may cause motor trouble at an
early stage.
Protrusion of
carbon brush
Contact portion outside
brush tube