![background image](/i/hitachi/151348/hitachi-cs40y/h/hitachi-cs40y-017.png)
17
English
4.
Inspecting
the
carbon
brushes
(Fig.
31)
The motor employs carbon brushes which are
consumable parts. Since an excessively worn carbon
brush can result in motor trouble, replace the carbon
brushes with new ones having the same carbon brush
No. shown in the
fi
gure when it becomes worn to or
near the “wear limit”. In addition, always keep carbon
brushes clean and ensure that they slide freely within
the brush holders.
The number of the carbon brush will di
ff
er in accordance
with the voltage being used.
5.
Replacing
the
carbon
brushes
Disassemble the brush caps with a slotted-head
screwdriver. The carbon brushes can then be easily
removed. (
Fig.
32
)
CAUTION
Be careful not to deform the brush holder during this
operation.
6.
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.
7.
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.
8.
Service
parts
list
CAUTION
Repair, modi
fi
cation 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 modi
fi
ed to incorporate the latest technological
advancements.
Accordingly, some parts may be changed without prior
notice.
GUARANTEE
We guarantee Hitachi Power Tools in accordance with
statutory/country speci
fi
c regulation. This guarantee does
not cover defects or damage due to misuse, abuse, or
normal wear and tear. In case of complaint, please send
the Power Tool, undismantled, with the GUARANTEE
CERTIFICATE found at the end of this Handling instruction,
to a Hitachi Authorized Service Center.
NOTE
Due to HITACHI’s continuing program of research and
development, the speci
fi
cations herein are subject to
change without prior notice.
Information
concerning
airborne
noise
and
vibration
The measured values were determined according to
EN60745 and declared in accordance with ISO 4871.
Measured A-weighted sound power level: 103 dB (A)
Measured A-weighted sound pressure level: 90 dB (A)
Uncertainty KpA: 2 dB (A).
Wear hearing protection.
Vibration total values (triax vector sum) determined
according to EN60745.
a
h
= 4.0 m/s
2
Uncertainty K = 1.5 m/s
2
The declared vibration total value has been measured in
accordance with a standard test method and may be used
for comparing one tool with another.
It may also be used in a preliminary assessment of
exposure.
WARNING
◯
The vibration emission during actual use of the power
tool can di
ff
er from the declared total value depending
on the ways in which the tool is used.
◯
Identify safety measures to protect the operator that
are based on an estimation of exposure in the actual
conditions of use (taking account of all parts of the
operating cycle such as the times when the tool is
switched o
ff
and when it is running idle in addition to the
trigger time).