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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 frontcover (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 authorized HITACHI 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.

MODIFICATION

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.

NOTE

This requirement is provided according to BRITISH STANDARD 2769: 1984.

Therefore, the letter code and colour code may not be applicable to other markets except The United Kingdom.

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