Maintenance And Inspection - Hitachi WH 14DBL Handling Instructions Manual

English
Bolt
Nut

MAINTENANCE AND INSPECTION

1. Inspecting the driver bit
Using a broken bit or one with a worn out tip is
dangerous because the bit can slip. Replace it.
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 may result in serious hazard.
3. 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.
4. Cleaning of the outside
When the impact driver is stained, wipe with a soft
dry cloth or a cloth moistened with soapy water. Do
not use chloric solvents, gasoline or paint thinner, as
they melt plastics.
5. Storage
Store the impact driver in a place in which the
temperature is less than 40°C, and out of reach of
children.
6. Service parts list
CAUTION:
Repair, modification 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 modified to incorporate the latest technological
advancements.
Accordingly, some parts may be changed without
prior notice.
NOTE:
Due to HITACHI's continuing program of reserch and
development, the specifications herein are subject to
change without prior notice.
45
Steel plate thickness t
*The following bolt is used.
Ordinary bolt: Strength grade 4.8
High tensile bolt: Strength grade 12.9
( Explanation of strength grade:
4 — Yield point of bolt: 320 N/mm
8 — Pulling strength of bolt: 400 N/mm
Fig. 13
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: 101 dB (A)
Measured A-weighted sound pressure level: 90 dB (A)
Uncertainty KpA: 3 dB (A).
Wear ear protection.
Vibration total values (triax vector sum) determined
according to EN60745.
Impact tightening of fasteners of the maximum capacity
of the tool:
Vibration emission value
Uncertainty K = 1.5 m/s
WARNING
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.
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).
2 {32.6 kgf/mm
2 {40.8 kgf/mm
a
h = 14.7 m/s 2
2
)
2 }
2 }