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Maintenance And Inspection - Hitachi CC 12Y Safety Instructions And Instruction Manual

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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.
Inspecting the cutting wheel
Ensure that the cutting wheel is free of cracks and
surface defects.
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 cut-off machine 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. 4)
The Motor employs carbon brushes which are
consumable parts. When they become worn to or
near the "wear limit", it could result in motor
trouble. When an auto-stop carbon brush is
equipped, the motor will stop automatically. At that
time, replace both carbon brushes with new ones
which have the same carbon brush Numbers
shown in the figure. In addition, always keep
carbon brushes clean and ensure that they slide
freely within the brush holders.
NOTE:
Use HITACHI carbon brush number indicated in
Fig. 4
Wear limit
0.67" (17mm)
Usual carbon
brush
(6 mm)
Auto-stop
carbon brush
(7 mm)
10
No. of carbon
brush
No. of
a
carbon brush
0.24"
44
0.28"
74
Fig. 4
5.
Replacing carbon brushes
Disassemble the brush caps with a slotted-head
screwdriver. The carbon brushes can then be easily
removed.
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.
Service parts list
CAUTION: Repair, modification and inspection
of Hitachi Power Tools must be
carried out by a Hitachi Authorized
Service Center.
This Parts List will be helpful if
presented with the tool to the
Hitachi Authorized
Service Center when requesting
repair or other maintenance. In the
operation and maintenance of
power tools, the safety regulations
and standards prescribed in each
country must be observed.
MODIFICATIONS:
Hitachi Power Tools are constantly being improved
and modified to incorporate the latest
technological advancements.
Accordingly, some parts (i.e. code numbers and/
or design) may be changed without prior notice.

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