Operation Manual

24
English
4. Replacing carbon brushes (Fig. 5):
<Disassembly>
(1) Loosen the D4 tapping screw retaining the brush
cover and remove the brush 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.
(4) Mount the brush cover and tighten the D4 tapping
screw.
5. 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.
6. 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 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 (i.e. code numbers and/or
design) 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.
Information concerning airborne noise and vibration
The measured values were determined according to
EN 60745 and declared in accordance with ISO 4871.
G18 series
Measured A-weighted sound power level: 106 dB(A)
Measured A-weighted sound pressure level: 95 dB(A)
Uncertainty KpA: 3 dB(A)
G23 series
Measured A-weighted sound power level: 101 dB(A)
Measured A-weighted sound pressure level: 90 dB(A)
Uncertainty KpA: 3 dB(A)
Wear ear protection.
The typical weighted root mean square acceleration
value: 4.5 m/s
2
.
䢇 Information about power supply system of nominal
voltage 230 V~ (For G18SE3, G18SG2, G23SC3,
G23SE2 only)
Under unfavorable mains conditions, this power tool
may cause
transient voltage drops or interfering voltage
fluctuations
.
This power tool is intended for the connection to a
power supply system with a maximum permissible
system impedance Z
MAX
of 0.23 Ohm at the interface
point (power service box) of the user's supply.
The user has to ensure that this power tool is connected
only to a power supply system which fulfills the
requirement above.
If necessary, the user can ask the public power supply
company for the system impedance at the interface point.