Maintenance And Inspection - Hitachi Koki C12LCH Mode D'emploi

English
WARNING
When mounting the saw blade, confirm that the
rotation indicator mark on the saw blade and the
rotation direction of the gear case (see Fig. 1) are
properly matched.
(6) Thoroughly clean washer (D) and the bolt, and install
them onto the saw blade spindle.
(7) Press in the spindle lock and tighten the bolt by turning
it to the left by standard accessories wrench (17 mm
box wrench) as indicated in Fig. 31.
CAUTION
Confirm that the spindle lock has returned to the
retract position after installing or removing the saw
blade.
Tighten the bolt so it does not come loose during
operation.
Confirm that the bolt has been properly tightened
before the power tool is started.
2. Dismounting the saw blade
Dismount the saw blade by reversing the mounting
procedures described in paragraph 1 above.
The saw blade can easily be removed after lifting the
lower guard.
CAUTION
Never attempt to install saw blades except
290 mm – 305 mm in diameter.

MAINTENANCE AND INSPECTION

WARNING
To avoid an accident or personal injury, always
confirm the trigger switch is turned OFF and that the
power plug has been disconnected from the
receptacle before performing any maintenance or
inspection of this tool.
1. Inspecting the saw blade
Always replace the saw blade immediately upon the
first sign of deterioration or damage.
A damaged saw blade can cause personal injury and
a worn saw blade can cause ineffective operation and
possible overload to the motor.
CAUTION
Never use a dull saw blade. When a saw blade is dull,
its resistance to the hand pressure applied by the tool
handle tends to increase, making it unsafe to operate
the power tool.
2. Inspecting the lever (Fig. 33 and Fig. 34)
If the M8 hexagonal head bolts (2) are loose, align the
sides of the fence and saw blade with the steel square.
After adjusting the saw blade and fence to a ninety-
degree angle, tighten the lever securing hexagonal
head bolts (2).
3. Inspecting the carbon brushes (Fig. 35 and Fig. 36)
The carbon brushes in the motor are expendable parts.
If the carbon brushes become excessively worn, motor
trouble might occur.
Therefore, inspect the carbon brushes periodically and
replace them when they have become worn to the
wear limit line as shown in Fig. 35.
Also, keep the carbon brushes clean so that they will
slide smoothly within the brush holders.
The carbon brushes can easily be removed after
removal of the brush caps (see Fig. 36) with a slotted
(minus) screwdriver.
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4. About Handling the Motor (see Fig. 1)
Winding of the motor is said to be the heart of this
tool. Exercise utmost caution not to damage the
winding by exposing it to wash oil or water.
NOTE
Accumulation of dust and the like inside the motor
can result in a malfunction.
After using the motor for 50 hours or so, carry out no-
load running, and blow in the dry air from a wind hole
at the motor's rear. Such action is effective to
discharge dust and the like.
5. Inspecting the screws
Regularly inspect each component of the power tool
for looseness.
Re-tighten screws on any loose part.
WARNING
To prevent personal injury, never operate the power
tool if any components are loose.
6. Inspecting the lower guard for proper operation
Before each use of the tool, test the lower guard (see
Fig. 7) to assure that it is in good condition and that it
moves smoothly.
Never use the tool unless the lower guard operates
properly and it is in good mechanical condition.
7. Storage
After operation of the tool has been completed, check
that the following has been performed:
(1) Trigger switch is in OFF position,
(2) Power plug has been removed from the receptacle,
(3) When the tool is not in use, keep it stored in a dry
place out of the reach of children.
8. Lubrication
Lubricate the following sliding surfaces once a month
to keep the power tool in good operating condition
for a long time (Fig. 1 and Fig. 2).
Use of machine oil is recommended.
Oil supply points:
* Rotary portion of hinge
* Rotary portion of vise assembly
9. Cleaning
Periodically remove chips, dust and other waste
material from the surface of the power tool, especially
from the inside of the lower guard with a damp, soapy
cloth. To avoid a malfunction of the motor, protect it
from contact with oil or water.
(Only Model C12LCH/C12FCH)
If the laser line becomes invisible due to chips and the
like adhered onto the window of the laser marker's light-
emitting section, wipe and clean the window with a dry
cloth or a soft cloth moistened with soapy water, etc.
10. Service parts list
A : Item No.
B : Code No.
C : No. Used
D : Remarks
CAUTION
Repair, modification and inspection of Hitachi Power
Tools must be carried out by a Hitachi Authorized
Service Center.
Especially laser device should be maintained by the
authorised agent by laser manufacturer.
Always assign the repair of laser device to Hitachi
Authorised 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.