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(3) Clamp the accessory into place by bringing the
retainer to the clamp position. To make sure that
the accessory is properly mounted, pull on the
accessory. (Fig. 2)
Mounting standard hexagonal shanks and retaining
groove shanks without collars.
(1) Clean, then smear the accessory shank portion
with grease or machine oil.
(2) Move the retainer to position A. Align the
accessory shank portion so that its recessed
portion is under clamp and seat the accessory,
such as a bull point, a cutter, etc., in the hexagonal
hole in the front cover (See Fig. 3).
(3) Clamp the accessory into place by bringing the
retainer to clamp position B. To make sure that
the accessory is properly mounted, pull on the
accessory. (Fig. 4)
NOTE:
When removing the accessory, such as a bull point,
a cutter, etc., carry out the above procedures in
reverse.
HOW TO USE THE DEMOLITION HAMMER
1. Squeeze 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 power tool. It
means that the safe guard mechanism against no-
load striking is working.
2. Operate this Demolition Hammer by utilizing its
empty weight. The performance will not be better
even if it is pressed or thrust forcibly against the work
surface. Hold this Demolition Hammer with a force
just sufficient to counteract the reaction. (Fig. 5)
GREASE REPLACEMENT
This Demolition Hammer is of full air-tight construction
to protect against dust and to prevent lubricant leakage.
Therefore, this Demolition Hammer can be used without
lubrication for long periods. Replace the grease as
described below.
Grease Replacement Period
After purchase, replace grease after every 6 months of
usage. Ask for grease replacement at the nearest
authorized Service Center.
MAINTENANCE AND INSPECTION
CAUTION:
Be sure to swith OFF and disconnect the attachment
plug from the receptacle to avoid a serious accident.
1. Inspecting this Demolition Hammer
Since use of a dull accessory, such as a bull point, a
cutter, etc. will degrade efficiency and cause possible
motor malfunction, sharpen or replace with a new
one as soon as abrasion is noted.
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. Inspecting the retainer (Fig. 1, Fig. 2)
The retainer may become loose due to excessive use.
Always, pay attention to its proper functioning to
securely hold the accessory shank portion. If any wear
and tear is found, bring this Demolition Hammer to
an authorized service center for maintenance service.
4. 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.
5. 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 results 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 Fig. 6. In addition, always
keep carbon brushes clean and ensure that they slide
freely within the brush holders.
6. Replacing carbon brushes:
Loosen the screws (Hexagon socket hd. bolt M4×12)
of the cap covers, then remove the cap covers (Fig.
7). 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.
7. Service parts list
A: Item No.
B: Code No.
C: No. Used
D: Remarks
CAUTION
Repair, modification and inspection of Hitachi Power
Tools must be carried out by an Authorized Service
Center.
This Parts List will be helpful if presented with the
power tool to the 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 (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 specifications herein are subject to
change without prior notice.
IMPORTANT
Correct connection of the plug
The wires of the main lead are coloured in accordance
with the following code:
Blue:
— Neutral
Brown:
— Live
English
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