English
HOW TO USE THE HAMMER (Fig. 9)
1.After placing the tip of the tool on concrete surface, switch ON.
The switch can be turned ON if the trigger is pulled and OFF when it is released.
Impact rate of the tool can be controlled steplessly by varying the amount that the trigger switch is pulled.
2.By utilizing the empty weight of the machine and by firmly holding the hammer by both hands, you can effectively control the subsequent recoil motion. Proceed at a moderate
GREASE REPLACEMENT
This machine is of fully oil sealed construction to protect against dust incursion and to prevent lubricant leakage. This machine can be used without grease replenishment for an extended period of time. However, perform the grease replacement to extend 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)Disassemble the crank cover and thoroughly wipe off the old grease inside. (Fig. 10)
(2)Supply 30g (the standard volume to cover the connecting rod) of Hitachi Electric Hammer Grease A in the crank case.
(3)After replacing the grease, reassemble the crank cover securely. At this time, do not damage or lose the oil seal.
NOTE:
The Hitachi Electric Hammer Grease A is of the low viscosity type. When the grease is consumed, purchase from the authorized Hitachi Service Center.
MAINTENANCE AND INSPECTION
CAUTION
To prevent accidents, make sure to turn the switch off and disconnect the plug from the receptacle.
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. 11)
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
5.Replacing carbon brushes:
Loosen the set screw and remove the tail cover. Remove the brush caps and carbon brushes. After replacing the carbon brushes, do not forget to tighten the brush caps properly and install the tail cover.
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 an 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 (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
As the colours of the wires in the main lead of this tool may not correspond with the coloured markings identifying the terminals in your plug proceed as follows: The wire coloured blue must be connected to the terminal marked with the letter N or coloured black. The wire coloured brown must be connected to the terminal marked with the letter L or coloured red. Neither core must be connected to the each terminal.
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