Manual Hitachi WH 10 DL (page 11 of 60) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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English

MAINTENANCE AND INSPECTION

1. Inspecting the driver bit

Using a broken bit or one with a worn out tip is

dangerous because the bit can slip. Replace it.

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. 8)

The motor employs carbon brushes which are

consumable parts. Since and excessively worn carbon

brush can result in motor trouble, replace the carbon

brush with new ones when it becomes worn to or

near the “wear limit”. In addition, always keep carbon

brushes clean and ensure that they slide freely within

the brush holders.

NOTE

When replacing the carbon brush with a new one, be

sure to use the Hitachi Carbon Brush Code No. 999054.

5. Replacing carbon brushes

Take out the carbon brush by first removing the

brush cap and then hooking the protrusion of the

carbon brush with a slotted head screw driver, etc.,

as shown in Fig. 10.

When installing the carbon brush, choose the direction

so that the nail of the carbon brush agrees with the

contact portion outside the brush tube. Then push it

in with a finger as illustrated in Fig. 11. Lastly, install

the brush cap.

CAUTION

Be absolutely sure to insert the nail of the carbon

brush into the contact portion outside the brush tube.

(You can insert whichever one of the two nails

provided.)

Caution must be exercised since any error in this

operation can result in the deformed nail of the carbon

brush and may cause motor trouble at an early stage.

6. Cleaning of the outside

When the driver drill is stained, wipe with a soft dry

cloth or a cloth moistened with soapy water. Do not

use chloric solvents, gasoline or paint thinner, for

they melt plastics.

7. Storage

Store the driver drill in a place in which the

temperature is less than 40°C and out of reach of

children.

NOTE

Make sure that the battery is fully charged when

stored for a long period (3 months or more). The

battery with smaller capacity may not be able to be

charged when used, if stored for a long period.

8. 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 (i.e. code numbers and/or

design) may be changed without prior notice.

Important notice on the batteries for the Hitachi

cordless power tools

Please always use one of our designated genuine

batteries. We cannot guarantee the safety and

performance of our cordless power tool when

used with batteries other than these designated

by us, or when the battery is disassembled and

modified (such as disassembly and replacement

of cells or other internal parts).

GUARANTEE

We guarantee Hitachi Power Tools in accordance with

statutory/country specific regulation. This guarantee does

not cover defects or damage due to misuse, abuse, or

normal wear and tear. In case of complaint, please send

the Power Tool, undismantled, with the GUARANTEE

CERTIFICATE found at the end of this Handling

instruction, to a Hitachi Authorized Service Center.

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.

Measured A-weighted sound power level: 103 dB (A)

Measured A-weighted sound pressure level: 92 dB (A)

Uncertainty KpA: 3 dB (A).

Wear ear protection.

Vibration total values (triax vector sum) determined

according to EN60745.

Impact tightening of fasteners of the maximum capacity

of the tool:

Vibration emission value

ah = 12.3 m/s

Uncertainty K = 1.5 m/s

01Eng_WH10DL_WE 6/22/11, 9:1310

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Hitachi WH 10 DL Manual

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