Handleiding Hitachi IT-1000-023 (pagina 10 van 64) (Nederlands, Duits, Engels, Frans, Italiaans, Portugees, Spaans)

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(4) Tightening conditions

The tightening torque differs according to the torque

ratio; class, and length of bolts even when bolts with

the same size threads are used. The tightening torque

also differs according to the condition of the surface

of workpiece through which the bolts are to be

tightened. When the bolt and nut turn together, torque

is greatly reduced.

(5) Using optional parts

The tightening torque is reduced a little when an

extension bar, universal joint or a long socket is used.

(6) Clearance of the socket

A worn or deformed hex. or a square-holed socket

will not give an adequate tightness to the fitting

between the nut or anvil, consequently resulting in

loss of tightening torque.

Using an improper socket which does not match to

the bolt will result in an insufficient tightening torque.

MAINTENANCE AND INSPECTION

1. Inspecting the socket

A worn or deformed hex. or a square-holed socket will

not give an adequate tightness to the fitting between

the nut or anvil, consequently resulting in loss of

tightening torque. Pay attention to wear of a socket

holes periodically, and replace with a new one if needed.

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 may 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. 12)

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” L. 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 Carbon Brush Code No. 999054

supplied by Tyco.

5. Replacing carbon brushes

Take out the carbon brush by first removing the

brush cap and then hooking the protrusion of the

carbon brush N with a slotted head screw driver,

etc., as shown in Fig. 14.

When installing the carbon brush, choose the direction

so that the nail of the carbon brush M agrees with the

contact portion outside the brush tube O. Then push

it in with a finger as illustrated in Fig. 15. 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 impact driver and impact wrench are

stained, wipe with a soft dry cloth or a cloth moistened

with soapy water. Do not use chloric solvents, gasoline

or paint thinner, as they melt plastics.

7. Storage

Store the impact driver and impact wrench in a place

in which the temperature is less than 40°C, and out of

reach of children.

8. Service parts list

CAUTION

Repair, modification and inspection of Tyco’s products

must be carried out by Authorized Service Center.

This Parts List will be helpful if presented with the

tool to the 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

Tyco’s products are constantly being improved and

modified to incorporate the latest technological

advancements.

Accordingly, some parts may be changed without

prior notice.

NOTE

Due to Tyco’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

EN50144.

The typical A-weighted sound pressure level: 97dB

The typical A-weighted sound power level: 110 dB

Wear ear protection.

The typical weighted root mean square acceleration

value: 8.8 m/s

01Eng_IT1000-023_WE 2/4/09, 21:039

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