Panasonic EY7840 Manuel utilisateur

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violation of law.

Order Number PTD0803X31CE

Cordless Rotary Hammer Drill & Driver

Model No. EY7840

Europe and Oceania

TABLE OF CONTENTS

PAGE PAGE

1 Warning -------------------------------------------------------------- 2

2 Specifications ----------------------------------------------------- 2

3 Troubleshooting Guide ----------------------------------------- 3

4 Disassembly and Assembly Instructions ---------------- 7

5 Wiring Connection Diagram ---------------------------------12

6 Schematic Diagram ---------------------------------------------13

7 Exploded View and Replacement Parts List -----------14

1Warning

Caution:

• Pb free solder has a higher melting point that standard solder; Typicall the melting point is 50 - 70°F (30 - 40°C) higher. Please

use a soldering iron with temperature control and adjust it to 750 ± 20°F (400 ± 10°C). In case of using high temperature solder-

ing iron, please be careful not to heat too long.

• Pb free solder will tend to splash when heated too high (about 1100°F / 600°C).

2 Specifications

3 Troubleshooting Guide

(Refer to WIRING CONNECTION DIAGRAM)

3.1. Trial Operation (After Checking Troubleshooting Guide.)

4 Disassembly and Assembly Instructions

4.1. How to Disassemble the Main Unit.

Ref. No. 1A Procedure 1A Removal of the chuck handle.

1. Set the hammering/drilling switching lever to the position .

2. Pluck the chuck cover depressing the chuck handle.

3. Remove the chuck handle.

4. Take out a steel ball pushing the chuck spring with the chuck spring

plate.

5. Remove the chuck spring plate and the chuck spring.

6. Remove C-type spring and white felt.

Ref. No. 1B Procedure 1A →1B Removal of the housing.

1. Remove 14 housing screws.

Ref. No. 1C Procedure 1A →1B →1C Removal of the switch.

1. Loosen two screws to remove the lead wires from motor assembly.

2. Take out the switch from the housing.

3. Take out the LED cover.

For assembling

NOTE:

Make sure not to break or deform the terminals.

Ref. No. 1D Procedure 1A →1B →1C →1D Removal of the motor assembly.

1. Hitch the brush spring to the frame by something like a forceps and

take the motor brush assembly with the switch out from the motor

assembly.

2. Take out the rotor from the motor case.

For assembling

NOTE:

Make sure to return the spring into the groove of the motor brush.

Make sure to set the 5mm cut of stator should be placed on the

hammer side when inserting the motor rotor assembly.

Close the housing and try to apply the DC14.4V and check if the

motor rotates or not.

Ref. No. 1E Procedure 1A →1B →1C →1D →1E Removal of the power shaft assembly.

1. Remove the piston applying power spring.

2. Take out the power shaft assembly.

3. Remove the snap ring.

4. Slide the jig (plate) into between the washer and the gear case and

hold it by a vise.

5. Tap the top of spindle block with a plastic hammer to take out the spin-

dle and clutch block assembly.

6. Take out the snap ring on the rear side of the bearing.

7. Take out two pins by using absorption force about 30N magnet from

the clutch block.

8. Take out four steel balls and remove the spindle & piston assembly.

9. Remove the striker with the O-ring and the O-ring. And take out the

bearing.

10. Take out the piston block. And take out the piston and the universal

coupling.

11. Remove the intermediate shaft assembly.

4.2. How to Reassemble the Main Unit.

Ref. No. 2A Procedure 2A Assembly of gear case assembly.

1. Set the jig (bearing cap) into the clutch case and hold it with a vise in

order to take out the bearing.

2. Assemble the bearing with the spindle assembly.

3. Set the snap ring.

NOTE:

It has own direction for reassembly. Place the rounded face of snap

ring to the clutch case side.

4. Fit O-ring onto the bearing.

5. Insert the reciprocation bearing shaft into the hole of universal cou-

pling. Make sure two thrust plates should be set both side of reciproca-

tion bearing shaft one of each.

6. Assemble the intermediate shaft assembly into the gear case from the

motor side first.

NOTE:

Apply grease especially for the connection area between reciproca-

tion bearing and universal coupling. In addition, hammer O-ring,

inside of piston and cylinder for output shaft block also need to

apply.

Air compressed by the piston drives hammer. Take care to protect

the piston and hammer from contamination by dust.

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