How To Use The Demolition Hammer; Grease Replacement - Hitachi H 65SB2 Handling Instructions Manual

4. Mounting a tool
NOTE
For tools such as a bull point and a cold chisel,
use only genuine HITACHI parts.
(1) Clean, then smear the tool shank with grease or
machine oil (Fig.1).
(2) 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).
(3) Clamp the tool by turning the stop lever by half
a turn in the opposite direction (Fig. 2).

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 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 sufficient to counteract
the reaction (Fig. 3).

GREASE REPLACEMENT

This machine is of full air-tight construction to protect
against dust and to prevent lubricant leakage. Therefore,
the machine 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 Hitachi
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 the tool
Since use of a dull tool will degrade efficiency and
cause possible motor malfunction, sharpen or
replace the tool 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. 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. 4)
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 figure.
In addition, always keep carbon brushes clean and
ensure that they slide freely within the brush holders.
5. Replacing carbon brushes
Loosen the screws (Hexagon socket hd. bolt M4×8)
of the cap covers, then remove the cap covers (Fig.
5). 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, 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 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.
The typical A-weighted sound pressure level: 92 dB (A)
The typical A-weighted sound power level: 103 dB (A)
Uncertainty KpA: 3 dB (A).
Wear hearing protection.
Vibration total values (triax vector sum) determined
according to EN60745.
Chiselling:
Vibration emission value
2
Uncertainty K = 2.3 m/s
The declared vibration total value has been measured in
accordance with a standard test method and may be
used for comparing one tool with another.
It may also be used in a preliminary assessment of
exposure.
WARNING
The vibration emission during actual use of the
power tool can differ from the declared total value
depending on the ways in which the tool is used.
Identify 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).
English
a
2
h, Cheq = 19.9 m/s
6