Electronic Disc Grinder
Model
G 12VA • G 13VA • G 13YF
Handling instructions
G13VA
Note:
Before using this Electric Power Tool, carefully read through these
HANDLING INSTRUCTIONS to ensure efficient, safe operation. It is
recommended that these INSTRUCTIONS be kept readily available
as an important reference when using this power tool.
GENERAL POWER TOOL SAFETY WARNINGS
WARNING
Read all safety warnings and all instructions.
Failure to follow the warnings and instructions may result in
electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mainsoperated (corded) power tool or battery-operated (cordless)
power tool.
1) Work area safety
a) Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b) Do not operate power tools in explosive atmospheres,
such as in the presence of flammable liquids, gases
or dust.
Power tools create sparks which may ignite the dust
or fumes.
c) Keep children and bystanders away while operating
a power tool.
Distractions can cause you to lose control.
2) Electrical safety
a) Power tool plugs must match the outlet.
Never modify the plug in any way.
Do not use any adapter plugs with earthed (grounded)
power tools.
Unmodified plugs and matching outlets will reduce
risk of electric shock.
b) Avoid body contact with earthed or grounded surfaces,
such as pipes, radiators, ranges and refrigerators.
There is an increased risk of electric shock if your
body is earthed or grounded.
c) Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of
electric shock.
d) Do not abuse the cord. Never use the cord for carrying,
pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or moving
parts.
Damaged or entangled cords increase the risk of
electric shock.
e) When operating a power tool outdoors, use an
extension cord suitable for outdoor use.
Use of a cord suitable for outdoor use reduces the
risk of electric shock.
f) If operating a power tool in a damp location is
unavoidable, use a residual current device (RCD)
protected supply.
Use of an RCD reduces the risk of electric shock.
3) Personal safety
a) Stay alert, watch what you are doing and use common
sense when operating a power tool.
Do not use a power tool while you are tired or under
the influence of drugs, alcohol or medication.
A moment of inattention while operating power tools
may result in serious personal injury.
b) Use personal protective equipment. Always wear eye
protection.
Protective equipment such as dust mask, non-skid
safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.
c) Prevent unintentional starting. Ensure the switch is
in the off-position before connecting to power source
and/or battery pack, picking up or carrying the tool.
1
4) Power tool use and care
5) Service
Carrying power tools with your finger on the switch
or energising power tools that have the switch on
invites accidents.
d) Remove any adjusting key or wrench before turning
the power tool on.
A wrench or a key left attached to a rotating part of
the power tool may result in personal injury.
e) Do not overreach. Keep proper footing and balance
at all times.
This enables better control of the power tool in
unexpected situations.
f) Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing and gloves away
from moving parts.
Loose clothes, jewellery or long hair can be caught
in moving parts.
g) If devices are provided for the connection of dust
extraction and collection facilities, ensure these are
connected and properly used.
Use of dust collection can reduce dust related hazards.
a) Do not force the power tool. Use the correct power
tool for your application.
The correct power tool will do the job better and safer
at the rate for which it was designed.
b) Do not use the power tool if the switch does not
turn it on and off.
Any power tool that cannot be controlled with the
switch is dangerous and must be repaired.
c) Disconnect the plug from the power source and/or
the battery pack from the power tool before making
any adjustments, changing accessories, or storing
power tools.
Such preventive safety measures reduce the risk of
starting the power tool accidentally.
d) Store idle power tools out of the reach of children
and do not allow persons unfamiliar with the power
tool or these instructions to operate the power tool.
Power tools are dangerous in the hands of untrained
users.
e) Maintain power tools. Check for misalignment or
binding of moving parts, breakage of parts and any
other condition that may affect the power tools'
operation.
If damaged, have the power tool repaired before use.
Many accidents are caused by poorly maintained
power tools.
f) Keep cutting tools sharp and clean.
Properly maintained cutting tools with sharp cutting
edges are less likely to bind and are easier to control.
g) Use the power tool, accessories and tool bits etc. in
accordance with these instructions, taking into
account the working conditions and the work to be
performed.
Use of the power tool for operations different from
those intended could result in a hazardous situation.
a) Have your power tool serviced by a qualified repair
person using only identical replacement parts.
This will ensure that the safety of the power tool is
maintained.
PRECAUTION
Keep children and infirm persons away.
When not in use, tools should be stored out of reach of
children and infirm persons.
SAFETY WARNINGS COMMON FOR
GRINDING, SANDING OR ABRASIVE
CUTTING-OFF OPERATIONS
a) This power tool is intended to function as a grinder,
sander or cut-off tool. Read all safety warnings,
instructions, illustrations and specifications provided
with this power tool.
Failure to follow all instructions listed below may
result in electric shock, fire and/or serious injury.
b) Operations such as wire brushing or polishing are
not recommended to be performed with this power
tool.
Operations for which the power tool was not
designed may create a hazard and cause personal
injury.
c) Do not use accessories which are not specifically
designed and recommended by the tool
manufacturer.
Just because the accessory can be attached to your
power tool, it does not assure safe operation.
d) The rated speed of the accessory must be at least
equal to the maximum speed marked on the power
tool.
Accessories running faster than their rated speed
can break and fly apart.
e) The outside diameter and the thickness of your
accessory must be within the capacity rating of
your power tool.
Incorrectly sized accessories cannot be adequately
guarded or controlled.
f) The arbour size of wheels, flanges, backing pads
or any other accessory must properly fit the spindle
of the power tool.
Accessories with arbour holes that do not match
the mounting hardware of the power tool will run
out of balance, vibrate excessively and may cause
loss of control.
g) Do not use a damaged accessory. Before each use
inspect the accessory such as abrasive wheels for
chips and cracks, backing pad for cracks, tear or
excess wear, wire brush for loose or cracked wires.
If power tool or accessory is dropped, inspect for
damage or install an undamaged accessory. After
inspecting and installing an accessory, position
yourself and bystanders away from the plane of
the rotating accessory and run the power tool at
maximum no-load speed for one minute.
Damaged accessories will normally break apart
during this test time.
h) Wear personal protective equipment. Depending on
application, use face shield, safety goggles or safety
glasses. As appropriate, wear dust mask, hearing
protectors, gloves and workshop apron capable of
stopping small abrasive or workpiece fragments.
The eye protection must be capable of stopping
flying debris generated by various operations. The
dust mask or respirator must be capable of filtrating
particles generated by your operation. Prolonged
exposure to high intensity noise may cause hearing
loss.
i) Keep bystanders a safe distance away from work
area. Anyone entering the work area must wear
personal protective equipment.
Fragments of workpiece or of a broken accessory
may fly away and cause injury beyond immediate
area of operation.
j) Hold power tool by insulated gripping surfaces
only, when performing an operation where the
cutting accessory may contact hidden wiring or its
own cord.
Cutting accessory contacting a “live” wire may make
exposed metal parts of the power tool “live” and
shock the operator.
k) Position the cord clear of the spinning accessory.
If you lose control, the cord may be cut or snagged
and your hand or arm may be pulled into the
spinning accessory.
l) Never lay the power tool down until the accessory
has come to a complete stop.
The spinning accessory may grab the surface and
pull the power tool out of your control.
m) Do not run the power tool while carrying it at your
side.
Accidental contact with the spinning accessory could
snag your clothing, pulling the accessory into your
body.
n) Regularly clean the power tool’s air vents.
The motor’s fan will draw the dust inside the housing
and excessive accumulation of powdered metal may
cause electrical hazards.
o) Do not operate the power tool near flammable
materials.
Sparks could ignite these materials.
p) Do not use accessories that require liquid coolants.
Using water or other liquid coolants may result in
electrocution or shock.
KICKBACK AND RELATED WARNINGS
Kickback is a sudden reaction to a pinched or snagged
rotating wheel, backing pad, brush or any other accessory.
Pinching or snagging causes rapid stalling of the rotating
accessory which in turn causes the uncontrolled power
tool to be forced in the direction opposite of the accessory’s
rotation at the point of the binding.
For example, if an abrasive wheel is snagged or pinched
by the workpiece, the edge of the wheel that is entering
into the pinch point can dig into the surface of the material
causing the wheel to climb out or kick out. The wheel may
either jump toward or away from the operator, depending
on direction of the wheel’s movement at the point of
pinching. Abrasive wheels may also break under these
conditions.
Kickback is the result of power tool misuse and/or incorrect
operating procedures or conditions and can be avoided
by taking proper precautions as given below.
a) Maintain a firm grip on the power tool and position
your body and arm to allow you to resist kickback
forces. Always use auxiliary handle, if provided, for
maximum control over kickback or torque reaction
during start-up.
The operator can control torque reactions or kickback
forces, if proper precautions are taken.
b) Never place your hand near the rotating accessory.
Accessory may kickback over your hand.
2
c) Do not position your body in the area where power
tool will move if kickback occurs.
Kickback will propel the tool in direction opposite
to the wheel’s movement at the point of snagging.
d) Use special care when working corners, sharp edges
etc. Avoid bouncing and snagging the accessory.
Corners, sharp edges or bouncing have a tendency
to snag the rotating accessory and cause loss of
control or kickback.
e) Do not attach a saw chain woodcarving blade or
toothed saw blade.
Such blades create frequent kickback and loss of
control.
SAFETY WARNINGS SPECIFIC FOR
GRINDING AND ABRASIVE CUTTING-OFF
OPERATIONS
a) Use only wheel types that are recommended for
your power tool and the specific guard designed
for the selected wheel.
Wheels for which the power tool was not designed
cannot be adequately guarded and are unsafe.
b) The guard must be securely attached to the power
tool and positioned for maximum safety, so the
least amount of wheel is exposed towards the
operator.
The guard helps to protect operator from broken
wheel fragments and accidental contact with wheel.
c) Wheels must be used only for recommended
applications. For example: do not grind with the
side of cut-off wheel.
Abrasive cut-off wheels are intended for peripheral
grinding, side forces applied to these wheels may
cause them to shatter.
d) Always use undamaged wheel flanges that are of
correct size and shape for your selected wheel.
Proper wheel flanges support the wheel thus
reducing the possibility of wheel breakage. Flanges
for cut-off wheels may be different from grinding
wheel flanges.
e) Do not use worn down wheels from larger power
tools.
Wheel intended for larger power tool is not suitable
for the higher speed of a smaller tool and may
burst.
ADDITIONAL SAFETY WARNINGS SPECIFIC
FOR ABRASIVE CUTTING-OFF OPERATIONS
a) Do not “jam” the cut-off wheel or apply excessive
pressure. Do not attempt to make an excessive
depth of cut.
Overstressing the wheel increases the loading and
susceptibility to twisting or blinding of the wheel
in the cut and the possibility of kickback or wheel
breakage.
b) Do not position your body in line with and behind
the rotating wheel.
When the wheel, at the point of operation, is moving
away from your body, the possible kickback may
propel the spinning wheel and the power tool directly
at you.
3
c) When wheel is binding or when interrupting a cut
for any reason, switch off the power tool and hold
the power tool motionless until the wheel comes
to a complete stop. Never attempt to remove the
cut-off wheel from the cut while the wheel is in
motion otherwise kickback may occur.
Investigate and take corrective action to eliminate
the cause of wheel binding.
d) Do not restart the cutting operation in the
workpiece. Let the wheel reach full speed and
carefully reenter the cut.
The wheel may bind, walk up or kickback if the
power tool is restarted in the workpiece.
e) Support panels or any oversized workpiece to
minimize the risk of wheel pinching and kickback.
Large workpieces tend to sag under their own
weight. Supports must be placed under the
workpiece near the line of cut and near the edge
of the workpiece on both sides of the wheel.
f) Use extra caution when making a “pocket cut” into
existing walls or other blind areas.
The protruding wheel may cut gas or water pipes,
electrical wiring or objects that can cause kickback.
SAFETY WARNINGS SPECIFIC FOR SANDING
OPERATIONS
a) Do not use excessively oversized sanding disc paper.
Follow manufacturers recommendations, when
selecting sanding paper.
Larger sanding paper extending beyond the sanding
pad presents a laceration hazard and may cause
snagging, tearing of the disc or kickback.
GENERAL SAFETY INSTRUCTIONS FOR
GRINDERS
– Check that speed marked on the wheel is equal to
or greater than the rated speed of the grinder;
– Ensure that the wheel dimensions are compatible
with the grinder;
– Abrasive wheels shall be stored and handled with
care in accordance with manufacturer’s instructions;
– Inspect the grinding wheel before use, do not use
chipped, cracked or otherwise defective products;
– Ensure that mounted wheels and points are fitted
in accordance with the manufacturer’s instructions;
– Ensure that blotters are used when they are provided
with the bonded abrasive product and when they
are required;
– Ensure that the abrasive product is correctly mounted
and tightened before use and run the tool at noload for 30 seconds in a safe position, stop
immediately if there is considerable vibration or if
other defects are detected. If this condition occurs,
check the machine to determine the cause;
– If a guard is equipped with the tool never use the
tool without such a guard;
– Do not use separate reducing bushings or adapters
to adapt large hole abrasive wheels;
– For tools intended to be fitted with threaded hole
wheel, ensure that the thread in the wheel is long
enough to accept the spindle length;
– Check that the work piece is properly supported;
– Do not use cutting off wheel for side grinding;
– Ensure that sparks resulting from use do not create
a hazard e.g. do not hit persons, or ignite flammable
substances;
– Ensure that ventilation openings are kept clear when
working in dusty conditions, if it should become
necessary to clear dust, first disconnect the tool
from the mains supply (use non metallic objects)
and avoid damaging internal parts;
– Always use eye and ear protection. Other personal
protective equipment such as dust mask, gloves,
helmet and apron should be worn;
– Pay attention to the wheel that continues to rotate
after the tool is switched off.
SPECIFICATIONS
Model G12VA G13VA G13YF
Voltage (by areas)* (230 V, 240 V)
Power Input* 1500 W
No-load speed* 2800–10500/min 10500/min
Wheel
Weight (only main body) 2.0 kg
*Be sure to check the nameplate on product as it is subject to change by areas.
Electronic Control
The grinder has an electronic speed control which
provides:
䡬 full speed at all times in the range up to rated load.
䡬 soft-start.
䡬 variable speed (EXCEPT OF G13YF)
䡬 Kickback Protection
The kickback protection feature cuts off the power
to the motor and stops the power tool in the event
of a sudden drop in the rotational speed of the
wheel during operation (for example, if the wheel
locks during cutting operation, etc.).
䡬 0 Voltage Re-start Protection
The 0 voltage restart protection feature prevents the
power tool from restarting after the power has been
temporarily cut off during operation.
䡬 Overload Protection
The overload protection feature shuts off the power
to the motor in the event of overloading of the
motor or a conspicuous reduction in rotational speed
during operation.
NOTE
The grinder is equipped with a rotational speed
control circuit. The rotational speed may fluctuate
slightly due to the conditions of use and working
voltage.
STANDARD ACCESSORIES
(1) Depressed center wheel .......................................... 1
(2) Wrench ........................................................................ 1
(3) Side handle ................................................................ 1
(4) Hex. bar wrench ....................................................... 1
Standard accessories are subject to change without
notice.
APPLICATIONS
䡬 Removal of casting fin and finishing of various
types of steel, bronze and aluminum materials and
castings.
outer dia. × hole dia. 115 × 22.23 mm 125 × 22.23 mm
peripheral speed 80 m/s
䡬 Grinding of welded sections or sections cut by
means of a cutting torch.
䡬 Grinding of synthetic resins, slate, brick, marble, etc.
䡬 Cutting of synthetic concrete, stone, brick, marble,
and similar materials.
PRIOR TO OPERATION
1. Power source
Ensure that the power source to be utilized conforms
to the power requirements specified on the product
nameplate.
NOTE
When connected to the power supply, the built-in
electronic control circuit shifts to standby status and
the grinder becomes slightly warm, but this is not
a malfunction.
CAUTION
Do not operate from a direct current power source,
engine generator, booster or any other type of
transformer. Doing so may not only cause damage
to the grinder, but may lead to accidents.
2. Power switch
Ensure that the power switch is in the OFF position.
If the plug is connected to a receptacle while the
power switch is in the ON position, the power tool
will start operating immediately, which could cause
a serious accident.
When the kickback protection, 0 voltage re-start
protection or overload protection feature has been
activated, return the power switch to the OFF position
and wait for 1 second or more before re-starting
the power tool.
3. Extension cord
When the work area is removed from the power
source, use an extension cord of sufficient thickness
and rated capacity. The extension cord should be
kept as short as practicable.
4
4. Fitting and adjusting the wheel guard
The wheel guard is a protective device to prevent
injury should the depressed center wheel be
shattered during operation. Ensure that the wheel
guard is properly fitted and fastened before
commencing grinding operation.
[How to attach and adjust the wheel guard] (Fig. 1)
䡬 Set the wheel ass’y to the packing gland.
䡬 Tighten M5 screw to secure the wheel guard while
the lever is in closed position.
䡬 Perform the adjustment of the wheel guard while
the lever is released. (Loosen M5 screw and readjust
if the wheel guard does not rotate smoothly.)
䡬 After adjustment, if grinder operation is required,
perform the operation only after setting the lever
in closed position.
䡬 Lubricate the sliding section of the set piece (B) and
the lever if the lever does not move smoothly.
Lever
Set piece (B)
M5 screw
Fig. 1
5. Ensure that mounted wheels and points are fitted
in accordance with the manufacturer’s instructions.
Ensure that the depressed center wheel to be utilized
is the correct type and free of cracks or surface
defects. Also ensure that the depressed center wheel
is properly mounted and the wheel nut is securely
tightened. Refer to the section on “ASSEMBLING
AND DISASSEMBLING ACCESSORIES”.
Ensure that blotters are used when they are provided
with the bonded abrasive product and when they
are required.
Do not use separate reducing bushings or adaptors
to adapt large hole abrasive wheels.
For tools intended to be fitted with threaded hole
wheel, ensure that the thread in the wheel is long
enough to accept the spindle length.
Do not use cutting off wheel for side grinding.
6. Conducting a trial run
Ensure that the abrasive products is correctly
mounted and tightened before use and run the tool
at no-load for 30 seconds in a safe position, stop
immediately if there is considerable vibration or if
other defects are detected.
If this condition occurs, check the machine to
determine the cause.
7. Confirm the push button.
Confirm that the push button is disengaged by
pushing push button two or three times before
switching the power tool on (See Fig. 1).
5
8. Fixing the side handle.
Screw the side handle into the gear cover.
9. Adjusting the number of revolution (EXCEPT OF
G13YF)
Above models are equipped with an electronic
infinite-variable-speed drive and can change the
number of revolution according to a use.
If you turn and set the dial scale (Fig. 2) to 6, the
number of revolution increases, and if you turn and
set it to 1, the number of revolution decreases.
Before use, set the number of revolution using the
dial. In so doing, refer to the following table as
a rough guide.
Dial Use Tools
1 Polishing, finishing
Removal of paint or
2
coat
3 Removal of rust
4 Removal of burrs
Grinding
5
Rough grinding
6 Cutting
NOTE: Use caution not to turn the dial scale to any value
below 1 or above 6.
Dial
10. Caution when using near welding equipment
When using the grinder in the immediate vicinity
of welding equipment, the rotational speed may
become unstable. Do not use the grinder near
welding equipment.
11. RCD
The use of a residual current device with a rated
residual current of 30 mA or less at all times is
recommended.
Radial grinding disc
Sanding disc
Depressed center
wheel
Depressed center
wheel
Diamond wheel
Fig. 2
PRACTICAL GRINDER APPLICATION
1. Pressure
Do not apply the grinding wheel strongly to the
grinding surface. The grinder makes use of electronic
circuit, so during application of load rotates at high
speed, so ample grinding effect can be obtained by
applying light pressure. If a strong grinding pressure
or other abnormal load is applied, the overload
protection circuit will operate and make the grinder
stop rotating, so please stop applying load
immediately. Following this, switching the power
OFF and then ON again, will cause the rotation to
increase to the regular speed.
CAUTION
When using the tool at any value except the full
speed (Dial scale 6), the motor cannot be sufficiently
cooled due to the decreased number of revolution.
This could result in the risk of burning and damaging
the motor before an overload protective mechanism
starts to function.
Make sure that you use the tool by lightly applying
it to the surface of material when you use it at any
value except the full speed (Dial scale 6).
2. Grinding angle
Do not apply the entire surface of the depressed
center wheel to the material to be ground. As
shown in Fig. 3, the machine should be held at an
angle of 15° – 30° so that the external edge of the
depressed center wheel contacts the material at an
optimum angle.
15°~30°
AB
Fig. 3
3. To prevent a new depressed center wheel from
digging into the workpiece, initial grinding should
be performed by drawing the grinder across the
workpiece toward the operator (Fig. 3 direction B).
Once the leading edge of the depressed center
wheel is properly abraded, grinding may be
conducted in either direction.
4. Precautions immediately after finishing operation
The wheel continues to rotate after the tool is
switched off.
After switching off the machine, do not put it down
until the depressed center wheel has come to a
complete stop. Apart from avoiding serious
accidents, this precaution will reduce the amount
of dust and swarf sucked into the machine.
CAUTIONS
䡬 Check that the work piece is properly supported.
䡬 Ensure that ventilation openings are kept clear when
working in dusty conditions.
If it should become necessary to clear dust, first
disconnect the tool from the mains supply (use nonmetallic objects) and avoid damaging internal parts.
䡬 Ensure that sparks resulting from use do not create
a hazard e.g. do not hit persons, or ignite flammable
substances.
䡬 Always use eye and ear protection.
Other personal protective equipment such as dust
mask, gloves, helmet and apron should be worn
when necessary.
If in doubt, wear the protective equipment.
䡬 When the machine is not use, the power source
should be disconnected.
ASSEMBLING AND DISASSEMBLING
ACCESSORIES (Fig. 4)
CAUTION: Be sure to switch OFF and disconnect the
<DEPRESSED CENTER WHEEL>
1. Assembling (Fig. 4)
(1) Turn the equipment upside-down so that the spindle
(2) Mount the wheel washer onto the spindle.
(3) Fit the protuberance of the depressed center wheel
(4) Screw from above the wheel nut onto the spindle.
(5) As shown in Fig. 4, push in the push button to
2. Disassembling
<RADIAL GRINDING DISC/DIAMOND WHEEL>
<SANDING DISC>
1. Assembling (Fig. 4)
(1) Turn the equipment upside-down so that the spindle
(2) After placing the sanding disc on the rubber pad,
(3) Press the push button to secure the spindle and
2. Disassembling
CAUTIONS
䡬 Confirm that the depressed center wheel is mounted
䡬 Confirm that the push button is disengaged by
attachment plug from the receptacle to avoid
a serious accident.
will be facing up.
onto the wheel washer.
prevent rotation of the spindle. Then, secure the
depressed center wheel by tightening the wheel nut
with the wrench.
Follow the above procedures in reverse.
Same as depressed center wheel.
will be facing up.
thread the washer nut onto the spindle.
tighten the washer nut with a wrench.
Follow the above procedures in reverse.
firmly.
pushing push button two or three times before
switching the power tool on.
6
Wrench
Wheel nut
Diamond
Depressed
center wheel
Wheel
washer
Wheel
guard
Spindle
wheel
MAINTENANCE AND INSPECTION
1. Inspecting the depressed center wheel
Ensure that the depressed center wheel is free of
cracks and surface defects.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure
that they are properly tightened. Should any of the
screws be loose, retighten them immediately. Failure
to do so could result in serious hazard.
3. Inspecting the carbon brushes (Fig. 5)
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.
Wear limit
Push button
Fig. 4
Radial grinding
wheel
4. Replacing carbon brushes (Fig. 6)
<Disassembly>
(1) Loosen the D4 tapping screw retaining the tail cover
and remove the tail cover.
(2) Use the auxiliary hexagonal wrench or small
screwdriver to pull up the edge of the spring that
is holding down the carbon brush. Remove the
edge of the spring toward the outside of the brush
holder.
(3) Remove the end of the pig-tail on the carbon brush
from the terminal section of brush holder and then
remove the carbon brush from the brush holder.
<Assembly>
(1) Insert the end of the pig-tail of the carbon brush
in the terminal section of brush holder.
(2) Insert the carbon brush in the brush holder.
(3) Use the auxiliary hexagonal wrench or small
screwdriver to return the edge of the spring to the
head of the carbon brush.
NOTE
Make sure the end of the spring is not holding the
pig-tail.
(4) Mount the tail cover and tighten the D4 tapping
screw.
Washer nut
Sanding
disc
Rubber pad
6 mm
17 mm
Usual carbon brush 88
Auto-stop carbon brush 76
Fig. 5
7
No. of carbon brush
No. of carbon brush
Pig-tail
Brush
holder
Spring
Fig. 6
Carbon
brush
5. Replacing supply cord
If the replacement of the supply cord is necessary,
this has to be done by the manufacturer of this
agent in order to avoid a safety hazard.
6. 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.
7. Service parts list
CAUTION
Repair, modification and inspection of Hitachi Power
Tools must be carried out by an 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 may be changed without
prior notice.
NOTE
Due to HITACHI’s continuing program of research and
development, the specifications herein are subject to
change without prior notice.
8
ITEM
A
3V
ITEM
A / G1
2V
G1
PART NAME Q’TY
41 SPRING 2
42 CARBON BRUSH HOLDER 2
43 CARBON BRUSH 1
NO.
2
PART NAME Q’TY
(W/SP. WASHER) M4×10
SEAL LOCK SCREW
2 TAPPING SCREW D5×25 4
3 PUSHING BUTTON 1
1
NO.
2
MACHINE SCREW (W/WASHER)
M3.5×6
44 CARBON BRUSH 1
45 TAPPING SCREW D3×10 4
46 RUBBER RING 1
47 SPRING 1
48 SLIDE BAR 1
49 PILLAR TERMINAL 1
50 SNAP SWITCH 1
51
52 INTERNAL WIRE 1
4 GEAR COVER ASS'Y 1
5 NUT M6 1
6 SEAL RING (A) 1
7 WASHER (C) 1
8 BALL BEARING 629T12DDC3PS2-L 1
9 RUBBER RING 1
10 BEARING COVER 1
11 ARMATURE 1
12 FAN GUIDE 1
2
TAPPING SCREW (W/FLANGE)
D4×16
53 CONNECTOR 50091 2
54 CONTROLLER 1
55 TERMINAL 1
56
57 CORD CLIP 1
58 TAIL COVER 1
59 NAME PLATE 1
13 HEX. HD. TAPPING SCREW D4×70 2
14 STATOR 1
15 THRUST WASHER 1
16 DUST SEAL (A) 1
17 BALL BEARING 608VVC2PS2L 1
18 MAGNET 1
19 GEAR AND PINION SET 1
20 LOCK PIN 1
2
TAPPING SCREW (W/FLANGE)
D4×50
60
61 TERMINAL 1
62 CORD ARMOR 1
63 HITACHI LABEL 1
64 CORD 1
65 STOP PIECE 1
501 HEX. BAR WRENCH 4MM 1
502 WRENCH 1
503 SIDE HANDLE 1
3
SEAL LOCK SCREW
(W/SP. WASHER) M4×8
21
22 BEARING COVER (B) 1
SEAL LOCK SCREW
23 BALL BEARING 6201VVCMPS2L 1
24 FELT PACKING 1
25 PACKING GLAND 1
3
(W/SP. WASHER) M5×16
26
27 FEATHER KEY 3×3×81
28 SPINDLE (A) 1
29 LABEL 1
1
1
HEX. SOCKET HD. BOLT
(W/WASHERS) M5×20
RETAINING RING (E-TYPE)
FOR D2.5 SHAFT
30 SET PIN 1
31 LEVER 1
32
33 SET PIECE (B) 1
34
35 WHEEL GUARD ASS'Y 1
36 WHEEL WASHER 1
37 D. C. WHEELS 115MM: G12VA 1
37 D. C. WHEELS 125MM: G13VA 1
38 WHEEL NUT (HKM) 1
39 SLIDE SWITCH KNOB 1
40 HOUSING 1
9
502
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
20
21
22
23
24
25
26
27
28
29
31
32
33
35
36
37
34
39
46
47
38
40
41
42
48
49
53
58
59
52
55
56
61
57
62
63
19
60
54
50
41
45
43
40
44
30
51
52
503
64
501
PART NAME Q’TY
1
2
2
2
1
ITEM
NO.
CARBON BRUSH (AUTO STOP TYPE)
40 SPRING 2
41 BRUSH HOLDER 2
42 CARBON BRUSH 1
43
44 TAPPING SCREW D3×10 4
45 RUBBER RING 1
46 SPRING 1
2
MACHINE SCREW (W/WASHER)
M3.5×6
47 SLIDE BAR 1
48 PILLAR TERMINAL 1
49 SWITCH 1
50
51 INTERNAL WIRE 1
52 CONNECTOR 50091 2
53 CONTROLLER 1
TAPPING SCREW (W/FLANGE) D4×16
54 TERMINAL 1
55
TAPPING SCREW (W/FLANGE) D4×50
56 CORD CLIP 1
57 TAIL COVER 1
58 NAME PLATE 1
59
60 TERMINAL 1
61 CORD ARMOR 1
62 HITACHI LABEL 1
63 CORD 1
3
64 STOP PIECE 1
4
SIDE HANDLE
(VIBRATION-ABSORBING)
501 HEX. BAR WRENCH 4MM 1
502 WRENCH 1
503
1
1
PART NAME Q’TY
(W/SP. WASHER) M4×10
SEAL LOCK SCREW
3YF
G1
ITEM
NO.
2 TAPPING SCREW D5×25 4
3 PUSHING BUTTON 1
4 GEAR COVER ASS'Y 1
1
5 NUT M8 1
6 SEAL RING (A) 1
7 WASHER (C) 1
8 BALL BEARING 629T12DDC3PS2-L 1
9 RUBBER RING 1
10 BEARING COVER 1
11 ARMATURE 1
12 FAN GUIDE 1
13 HEX. HD. TAPPING SCREW D4×70 2
14 STATOR 1
15 THRUST WASHER 1
16 DUST SEAL (A) 1
17 BALL BEARING 608VVC2PS2L 1
18 MAGNET 1
19 GEAR AND PINION SET 1
SEAL LOCK SCREW
(W/SP. WASHER) M4×8
20 LOCK PIN 1
21
22 BEARING COVER (B) 1
23 BALL BEARING 6201DDCMPS2L 1
24 FELT PACKING 1
SEAL LOCK SCREW
(W/SP. WASHER) M5×16
25 PACKING GLAND 1
26
HEX. SOCKET HD. BOLT
(W/WASHERS) M5×20
RETAINING RING (E-TYPE)
27 FEATHER KEY 3×3×81
28 SPINDLE (A) 1
29 LABEL 1
30 SET PIN 1
31
32 SET PIECE (B) 1
FOR D2.5 SHAFT
33
34 WHEEL GUARD ASS'Y 1
35 WHEEL WASHER 1
36 D. C. WHEELS 125MM A36Q 1
37 WHEEL NUT M14 1
38 SLIDE SWITCH KNOB 1
39 HOUSING 1
10
Hitachi Koki Co., Ltd.
Shinagawa Intercity Tower A, 15-1, Konan 2-chome,
Minato-ku, Tokyo, Japan
102
Code No. C99179313 M
Printed in Malaysia
Loading...