14 ENGLISH
MAINTENANCE
CAUTION:
Always be sure that the tool is
switched off and the battery cartridge is removed
before attempting to perform inspection or
maintenance.
CAUTION:
Wear safety gloves when handling
the blade.
Otherwise it may result in personal injury.
NOTICE:
Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
Blade maintenance
NOTICE:
Failure to perform blade maintenance may
cause excessive blade friction and shorten the oper-
ating time per battery charge.
Before and after operation, check the shear blades
carefully.
After operation, clean off the blades with a stiff brush.
Then wipe the blades with a cloth. And apply Makita
genuine machine oil onto the blade edge and movable
part.
►
Fig.22
Sharpening blades
Upper shear blade
1.
Apply the flat surface of the diamond file to the
blade edge.
Push the diamond file towards the tip of the blade to
sharpen along the entire blade edge.
Maintain the same flat contact with the file consistently
along the entire blade edge.
►
Fig.23:
1.
Diamond file
2.
Apply the flat surface of the diamond file lightly to
the opposite side of the blade.
Move the diamond file towards the tip of the blade
lightly to remove burrs.
►
Fig.24
NOTICE:
Do not sharpen this side too much. File
lightly only for removing burrs. Otherwise the blade
clearance may become too much or the blade life
may be shortened.
Lower shear blade
1.
Apply the round surface of the diamond file to the
blade edge.
Push the diamond file towards the tip of the blade to
sharpen along the entire blade edge.
►
Fig.25
2.
Apply the flat surface of the diamond file lightly to
the opposite side of the blade.
Move the diamond file towards the tip of the blade
lightly to remove burrs.
►
Fig.26
NOTICE:
Do not sharpen this side too much. File
lightly only for removing burrs. Otherwise the blade
clearance may become too much or the blade life
may be shortened.
Adjustment for blade clearance
►
Fig.27:
1.
Plate fixing bolt
2.
Lock plate
3.
Blades
tightening nut
From time to time, adjust the clearance of the shear
blades as follows:
1.
Switch on the tool, and pull the switch trigger to
open the shear blades.
2.
With shear blades open, switch off the tool. And
disconnect the connection cord from the tool.
3.
Loosen the plate fixing bolt. And then remove the
lock plate.
4.
Adjust the tightness of the blades tightening nut
by hand (fastening torque for the blade tightening nut:
approximately 0.5 N•m).
5.
Install the lock plate and plate fixing bolt again.
6.
Check the tightness of the blade whether the
blades never rattle but upper blade can be opened or
closed about 3mm by hand. If the blades are too tight or
loose, adjust the clearance again.
NOTICE:
Pay attention to the clearance of the
blades. Too loose clearance may result in dull cut,
and too tight blade clearance may result in overload
for the motor and short running time of the tool.
Removing or installing shear blades
To remove the shear blades, perform following steps:
1.
Tilt the opening angle selector lever to the left side
first to open the blades fully.
2.
Switch on the tool, and pull the switch trigger to
open the shear blades.
3.
With shear blades open, switch off the tool. And
disconnect the connection cord from the tool.
►
Fig.28
4.
Remove two bolts near the switch trigger with the
hex wrench.
Remove the trigger guard by separating the tongue on
the trigger guard from the groove of the housing.
►
Fig.29:
1.
Bolts
2.
Trigger guard
5.
Remove the E-ring on the link arm with a slotted
screwdriver or alike.
►
Fig.30:
1.
E-ring
2.
Link arm
NOTICE:
The E-ring is expendable part. Do not
re-use the E-ring when reassembling.
6.
Carefully remove the pin.
►
Fig.31:
1.
Pin
7.
Remove two bolts from the side of the housing.
►
Fig.32:
1.
Bolts
8.
Carefully remove the upper and lower shears from
the housing.
►
Fig.33
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