511980

Hitachi H45SR Manual

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English
(1) Install the tool into the tool chuck.
(2) Insert the dust cover starting from the tip of the tool.
(3) Press the tool all the way in, then seat the dust cover
on the grip (A) as shown in Fig. 6.
(4) When installing tools such as cutters, insert the dust
cover into the tool and install the tool onto the tool
chuck before seating the dust cover on the grip (A).
7. Removing Tool
As shown in Fig. 4, pull grip (A), and pull out the tool.
CAUTION:
Be sure to grip the hanle and side handle or grip (B)
portion during work. Do not hold by the grip (A)
during work. If you pull it by mistake, the bull poin
could jump out.
HOW TO USE THE DEMOLITION HAMMER (Fig. 7)
1. After placing the tip of the tool on concrete surface,
switch ON.
2. By utilizing the weight of the machine and by firmly
holding the demolition hammer with both hands,
one can effectively control the subsequent recoil
motion.
Proceed at a moderate work-rate, the use of too
much force will impair efficiency.
CAUTION:
After long time of use, the cylinder case becomes
hot. Therefore, be careful not to burn your hands.
GREASE REPLACEMENT
This machine is of full air-tight construction to protect
against dust and to prevent lubricant leakage. This
machine can be used without grease supplement for an
extended period of time. However, perform the grease
replacement to maintain the service life. Replace the
grease as described below.
1. Grease Replacement Period
You should look at the grease when you change the
carbon brush. (See item 4 in the section
MAINTENANCE AND INSPECTION.) Ask for grease
replacement at the nearest authorized Hitachi Service
Center.
In the case that you are forced to change the grease
by yourself, please follow the following points.
2. How to replace grease
CAUTION:
Before replacing the grease, turn the power off and
pull out the plug from the receptacle.
(1) Remove the crank cover and wipe off the old grease
inside. (Fig. 8)
(2) Supply 40 g (the standard volume to cover the
connecting rod) of Hitachi Electric Hammer Grease A
to the crank case.
(3) After replacing the grease, install the crank cover
securely.
NOTE:
The Hitachi Electric Hammer Grease A is of the low
viscosity type. When the grease is consumed,
purchase from an authorized Hitachi Service
Center.
APPLICATIONS
Breaking concrete, chipping off concrete, grooving, bar
cutting, and driving piles.
Application examples:
Installation of piping and wiring, sanitary facility
installation, machinery installation, water supply and
drainage work, interior jobs, harbor facilities and other
civil engineering work.
PRIOR TO OPERATION
1. Power source
Ensure that the power source to be utilized conforms
to the power requirements specified on the product
nameplate.
2. Power switch
Ensure that the power switch is in the OFF position. If
the plug is connected to a receptacle while the power
switch is in the ON position, the power tool will start
operating immediately, which could cause a serious
accident.
3. Extension cord
When the work area is removed from the power
source, use an extension cord of sufficient thickness
and rated capacity. The extension cord should be
kept as short as practicable.
4. Before installing the tools
CAUTION:
Be sure to switch power OFF and disconnect the plug
from the receptacle to avoid serious trouble.
NOTE:
To prevent dust from getting into the tool chuck,
always replace the front cap with one that matches
the shape of the tool shank in use. (Fig. 1, Fig. 2)
To replace the front cap, perform the following.
(1) Pull the grip (A) in the direction of
as shown in Fig.
3, and firmly pull on the front cap to remove it.
(2) Attach the front cap with the grip (A) already pulled
out in the direction of
, then return the grip (A) to
its original position.
5. Installing Tools
CAUTION:
Be sure to switch power OFF and disconnect the plug
from the receptacle to avoid serious trouble.
NOTE:
Concerning the tools such as bull points and cutters,
be sure to use separately sold genuine parts that are
designated by HITACHI.
(1) Wipe off and clean up the shank section of the tool,
and apply grease or machine oil onto it.
(2) As shown in Fig. 4, pull grip (A) in the direction of
,
and insert the tool into a hole of the front cap.
(3) Adjust the hexagonal hole while turning the tool, and
furthermore insert it until it hits the end of the hole.
(4) Return grip (A) to its original position, pull the tool
and make sure it is locked completely. (Fig. 5)
6. Installing the dust cover
CAUTION:
Be sure to switch power OFF and disconnect the plug
from the receptacle to avoid serious trouble.
When the dust cover has been seated over the grip (A),
then dust will be prevented from getting into the tool
chuck during operation.
Install the dust cover as follows.
01Eng_H45SR_WE 08/12/12, 12:046
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