Manual Hitachi G13YF (page 10 of 68) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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⅜ Always use eye and ear protection.

Other personal protective equipment such as dust

mask, gloves, helmet and apron should be worn

when necessary.

If in doubt, wear the protective equipment.

⅜ When the machine is not use, the power source

should be disconnected.

ASSEMBLING AND DISASSEMBLING

ACCESSORIES (Fig. 1)

CAUTION: Be sure to switch OFF and disconnect the

attachment plug from the receptacle to avoid

a serious accident.

1. Assembling (Fig. 1)

(1) Turn the equipment upside-down so that the spindle

will be facing up.

(2) Mount the wheel washer onto the spindle.

(3) Fit the protuberance of the depressed center wheel

onto the wheel washer.

(4) Screw from above the wheel nut onto the spindle.

(5) As shown in Fig. 1, push in the push button to

prevent rotation of the spindle. Then, secure the

depressed center wheel by tightening the wheel nut

with the wrench.

2. Disassembling

Follow the above procedures in reverse.

Same as depressed center wheel.

1. Assembling (Fig. 1)

(1) Turn the equipment upside-down so that the spindle

will be facing up.

(2) After placing the sanding disc on the rubber pad,

thread the washer nut onto the spindle.

(3) Press the push button to secure the spindle and

tighten the washer nut with a wrench.

2. Disassembling

Follow the above procedures in reverse.

CAUTIONS

⅜ Confirm that the depressed center wheel is mounted

firmly.

⅜ Confirm that the push button is disengaged by

pushing push button two or three times before

switching the power tool on.

MAINTENANCE AND INSPECTION

1. Inspecting the depressed center wheel

Ensure that the depressed center wheel is free of

cracks and surface defects.

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. Inspecting the carbon brushes (Fig. 5)

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.

4. Replacing carbon brushes (Fig. 6)

(1) Loosen the D4 tapping screw retaining the tail cover

and remove the tail cover.

(2) Use the auxiliary hexagonal wrench or small

screwdriver to pull up the edge of the spring that

is holding down the carbon brush. Remove the

edge of the spring toward the outside of the brush

holder.

(3) Remove the end of the pig-tail on the carbon brush

from the terminal section of brush holder and then

remove the carbon brush from the brush holder.

(1) Insert the end of the pig-tail of the carbon brush

in the terminal section of brush holder.

(2) Insert the carbon brush in the brush holder.

(3) Use the auxiliary hexagonal wrench or small

screwdriver to return the edge of the spring to the

head of the carbon brush.

NOTE:

Make sure the end of the spring is not holding the

pig-tail.

(4) Mount the tail cover and tighten the D4 tapping

screw.

5. Replacing supply cord

If the replacement of the supply cord is necessary,

this has to be done by the manufacturer of this

agent in order to avoid a safety hazard.

6. 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.

7. 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.

01Eng_G12VA_WE 4/20/10, 17:359

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Hitachi G13YF Manual

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