Oil Feeding; Maintenance And Inspection; How To Use The Demolition Hammer - Hitachi PH-65A Handling Instructions Manual

English
(1) Rotate the stop lever 180° in a clockwise direction while
pulling it toward you. Next, insert the tool shank into the
hexagonal hole on the front cover. (Fig. 1)
(2) Clamp the tool by turning the stop lever by half a turn in
the opposite direction. (Fig. 2)
NOTE
When removing the tool, follow the above procedures in
reverse.

HOW TO USE THE DEMOLITION HAMMER

1. Pull the trigger switch after applying the tip of the bit to the
crushing position.
In some cases, it is necessary to punch the tip of the bit
against the crushing position forcibly in order to begin the
striking motion.
This is not due to malfunction of the tool. It means that
the safe guard mechanism against no-load striking is
working.
2. Operate the tool by utilizing its empty weight. The
performance will not be better even if the tool is pressed
or thrust forcibly against the work surface. Hold the tool
with a force just suffi cient to counteract the reaction.
(Fig. 3)
CAUTION
Sometimes the tool does not begin the striking motion
even when the motor rotates because the oil has become
thick.
If the tool is used at low temperatures or if it is used after
a long time idle, the tool should be used running in for fi ve
minutes in order to warm it up.

OIL FEEDING

CAUTION
Prior to oil feeding, always disconnect the plug from the
receptacle.
Since an oil chamber is built in this Hitachi Electric
Hammer, it can be used for approximately 20 days without
replenishing lubricating oil, assuming that the Hammer is
used continuously 3 – 4 hours daily.
Feed oil into the oil tank as described below before using this
Hammer. (see Fig. 4 and 5)
1. Just before no oil is visible in the oil gauge window when
the power tool is held upright, feed oil without fail.
2. Before feeding oil, use the provided wrench to remove
the oil gauge.
Be careful not to lose the rubber packing attached below
the oil gauge.
3. Check the oil level once a day, confi rming that oil is
fi lled.
4. After feeding oil, securely clamp the oil gauge.
NOTE
As an optional accessory, oil for the Hitachi Electric
Hammer (one liter) is sold separately. Use this oil when
oil in the tank is depleted. Shell Oil Co. ROTELLA #40
(engine oil) can also be used. This oil is sold as Shell
gasoline stations most anywhere.

MAINTENANCE AND INSPECTION

CAUTION
Be sure to swith OFF and disconnect the attachment plug
from the receptacle to avoid a serious accident.
1. Inspecting the tool
Since use of a dull tool will degrade effi ciency and cause
possible motor malfunction, sharpen or replace the tool
as soon as abrasion is noted.
5
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 could
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. Inspecting the carbon brushes (Fig. 6)
The Motor employs carbon brushes which are
consumable parts. When they become worn to or near
the "wear limit", it could result in motor trouble. When an
auto-stop carbon brush is equipped, the motor will stop
automatically. At that time, replace both carbon brushes
with new ones which have the same carbon brush
numbers shown in the fi gure. In addition, always keep
carbon brushes clean and ensure that they slide freely
within the brush holders.
5. Replacing carbon brushes
Loosen the screw of the cap covers, then remove the
cap covers. After removing the brush caps, the carbon
brushes can be removed.
After replacing the carbon brushes, tighten the brush
caps, then mount the cap covers securely.
6. Service parts list
A: Item No.
B: Code No.
C: No. Used
D: Remarks
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 (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 specifi cations herein are subject to change
without prior notice.