Manual Hitachi CN16A (page 7 of 42) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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English

When the machine is used according to the service

life indicated in the above table, the punch will have

abrasions as shown in the enlarged diagram of the

worn punch tip in Fig. 7. This is when the punch

and die should be replaced.

CAUTION

If the punch and die are used longer than the

specified service life, the die holder will be subject

to excessive stress and may break off.

When a 1.6 mm mild steel trapezoidal plate is cut,

wear will be especially quick. Replace the punch

and die as soon as possible after reaching the

service life.

2. Punch and die replacement (see Fig. 8)

CAUTION

During the following operations, use care to prevent

dirt adhering inside the gear cover, inside the die

holder and around the piston.

(1) Punch replacement

(a) Loosen the M8 hexagon socket set screw mounting

the die holder (see Fig. 4) and remove the die

holder.

(b) Loosen the M5 hexagon socket set screw fastening

the punch to the piston and pull out the punch.

of the punch and the direction of the M5 hexagon

socket set screw, then securely tighten the hexagon

socket set screw (see Fig. 9).

(2) Die replacement

Loosen the 2 machine screws and replace the die.

(3) Lubricaton

When the above replacement operations are

completed, apply a suitable amount of machine oil

to the sliding surfaces around the punch and die

and operate the machine without a load.

MAINTENANCE AND INSPECTION

1. Checking punch and die

A worn or defective punch and die will greatly

decrease work efficiency.

Check and replace them periodically. Refer to

“Replacing punch and die”.

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. 10)

The motor employs carbon brushes which are

consumable parts. Since an excessively worn carbon

brush can result in motor trouble, replace the carbon

brush with a new one having the same carbon

brush No. shown in the figure 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.

5. Replacing carbon brushes

Disassemble the brush cap with a screwdriver. The

carbon brush can then be easily removed.

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 mark-

ed with the letter L or coloured red. Neither core must be

connected to the earth 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.

Cutting materials

Service life cutting

lengths of punch and die

1.6 mm Mild steel plates 300 m

1.6 mm Mild steel

corrugated and trapezoidal 50 m

plates

1.2 mm stainless steel plates

200 m

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Hitachi CN16A Manual

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