Hitachi DH50MR-NA [12/82] English
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Hitachi DH50MR-NA [12/82] English

Hitachi DH50MR-NA [12/82] English
11
English
5. Replacing carbon brushes
Loosen the two set screws and remove the tail
cover. Remove the brush caps and carbon brushes.
After replacing the carbon brushes, tighten the brush
caps securely and install the tail cover with securely
tightening two set screws.
6. 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.
GUARANTEE
We guarantee Hitachi Power Tools in accordance with
statutory/country specific 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 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
EN60745 and declared in accordance with ISO 4871.
Measured A-weighted sound power level: 99 dB (A).
Measured A-weighted sound pressure level: 88 dB (A).
Uncertainty KpA: 3 dB (A).
Wear ear protection.
Vibration total values (triax vector sum) determined
according to EN60745.
Hammer drilling into concrete:
Vibration emission value ah, HD =
12.0 m/s
2
(DH50MRY)
20.0 m/s
2
(DH50MR)
Uncertainty K = 1.5 m/s
2
Chiselling:
Vibration emission value ah, Cheq =
10.5 m/s
2
(DH50MRY)
17 m/s
2
(DH50MR)
Uncertainty K = 1.5 m/s
2
WARNING
䡬 The vibration emission value during actual use of
the power tool can differ from the declared value
depending on the ways in which the tool is used.
䡬 To identify the 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 off and when it is running
idle in addition to the trigger time).

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English 5 Replacing carbon brushes Loosen the two set screws and remove the tail cover Remove the brush caps and carbon brushes After replacing the carbon brushes tighten the brush caps securely and install the tail cover with securely tightening two set screws 6 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 GUARANTEE We guarantee Hitachi Power Tools in accordance with statutory country specific 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 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 EN60745 and declared in accordance with ISO 4871 Measured A weighted sound power level 99 dB A Measured A weighted sound pressure level 88 dB A Uncertainty KpA 3 dB A Wear ear protection Vibration total values triax vector sum determined according to EN60745 Hammer drilling into concrete Vibration emission value 3h HD 12 0 m s2 DH50MRY 20 0 m s2 DH50MR Uncertainty K 1 5 m s2 Chiselling Vibration emission value 3h Cheq 10 5 m s2 DH50MRY 17 m s2 DH50MR Uncertainty K 1 5 m s2 11 WARNING O The vibration emission value during actual use of the power tool can differ from the declared value depending on the ways in which the tool is used O To identify the 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 off and when it is running idle in addition to the trigger time

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