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DEPRESSED CENTER WHEEL ASSEMBLY
AND DISASSEMBLY
WARNING:
Never attempt to assemble or disassemble the
depressed center wheel, unless the power switch
is in the "OFF" position and the electrical cord has
been disconnected from the receptacle.
1.
Assembly
(1) Turn the disc grinder upsidedown so that the
spindle is facing upward.
(2) Align the oval-shaped indentation of the wheel
washer with the notched part of the spindle, then
attach them.
(3) Fit the protuberance of the depressed center wheel
onto the wheel washer.
(4) Screw the wheel nut onto the spindle.
(5) While pushing the push button with one hand, lock
the spindle by turning the depressed center wheel
slowly with the other hand.
Tighten the wheel nut by using the supplied
wrench as shown in 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.
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.
12
Wrench
Depressed
center
wheel
Wheel
washer
Spindle
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.
Wheel
nut
Wheel
guard
Push button
Fig. 5
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