Panasonic EY7840 Service Manual ▷ View online
5
6
3.1.
Trial Operation (After Checking Troubleshooting Guide.)
7
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.
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.
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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.
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.
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.
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.
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