Maintenance And Inspection - Hitachi DH 26PC Mode D'emploi

3. Dismounting. (Fig. 22)
Remove the core bit shank from the rotary hammer
and strike the head of the core bit shank strongly two
or three times with the manual hammer holding the
core bit, then the thread becomes loose and the core
bit can be removed.

MAINTENANCE AND INSPECTION

WARNING
Be sure to switch power OFF and disconnect the
plug from the receptacle during maintenance and
inspection.
1. Inspecting the drill bits
Since use of a dull tool will cause motor malfunctioning
and degraded effi ciency, replace the drill bit with a new
one or resharpening without delay when abrasion is
noted.
2. Inspecting the screws
Regularly inspect all screws and ensure that they
are properly tightened. Should any of the screws be
loosened, retighten them immediately.
WARNING
Using this rotary hammer with loosen screws is
extremely dangerous.
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. Inspecting the carbon brushes
For your continued safety and electrical shock
protection, carbon brush inspection and replacement
on this tool should ONLY be performed by a Hitachi
Authorized Service Center.
5. How to replace grease
Low viscosity grease is applied to this rotary hammer
so that it can be used for a long period without
replacing the grease. Replace the grease whenever you
change the carbon brush to maintain the service life.
Please contact the nearest service center for grease
replacement when any grease is leaking from loosened
screw. Further use of the rotary hammer despite the
grease shortage causes seizure to reduce the service
life.
Core bit shank
CAUTION
A specific grease is used with this machine,
therefore, the normal performance of the machine
may be badly aff ected by use of other grease.
Please be sure to let one of our service agents
undertake replacement of the grease.
6. Service and repairs
All quality power tools will eventually require servicing
or replacement of parts because of wear from normal
use. To assure that only authorized replacement parts
will be used, all service and repairs must be performed
by a Hitachi Authorized Service Center, ONLY.
7. Service parts list
CAUTION
Repair, modifi 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 modifi ed to incorporate the latest technological
advancements.
Accordingly, some parts may be changed without prior
notice.
English
Fig. 22
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