Replacing Carbon Brushes - Makita HM1304B Manual De Instrucciones

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Installing or removing the bit
This tool accepts bits either with or without a collar on its
shank.
To install the bit, follow either procedure (1) or (2)
described below.
(1) For bits with a collar
1
2
3
4
1. Bit
3. Tool holder
5. When the bit is retained
Pivot the tool retainer back and slightly downward.
Insert the bit into the tool holder as far as it will go.
To securely retain the bit, return the tool retainer to
its original position.
CAUTION:
Always assure that the bit is securely retained by
attempting to pull the bit out of the tool holder after
completing the above procedure.
(2) For bits without a collar
1
2
3
4
1. Notched portion
3. Barrel
5. When the bit is retained
Pivot the tool retainer back and slightly downward.
With the notched portion of the bit facing the tool
retainer shaft, insert the bit into the tool holder as
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1. Bit with collar
1
2. Bit without collar
2
2. Tool retainer
4. When the bit is inserted
2. Tool retainer shaft
4. When the bit is inserted
far as it will go. Then pivot the tool retainer further
downward toward the barrel to securely retain the
bit.
CAUTION:
Always assure that the bit is securely retained by
attempting to pull the bit out of the tool holder after
completing the above procedure.
The bit without a collar cannot be retained by the
method shown in Fig.(1).
To remove the bit, follow the installation procedure in
reverse.
OPERATION
Chipping/Scaling/Demolition
Hold the tool firmly with both hands. Turn the tool on and
apply slight pressure on the tool so that the tool will not
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bounce around, uncontrolled. Pressing very hard on the
tool will not increase the efficiency.
MAINTENANCE
CAUTION:
Always be sure that the tool is switched off and
5
unplugged before attempting to perform inspection
or maintenance.

Replacing carbon brushes

1
When the resin insulating tip inside the carbon brush is
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exposed to contact the commutator, it will automatically
shut off the motor. When this occurs, both carbon
brushes should be replaced. Keep the carbon brushes
clean and free to slip in the holders. Both carbon brushes
should be replaced at the same time. Use only identical
carbon brushes.
Use a screwdriver to remove the holder cap plates.
5
1
5
001146
1. Commutator
2. Insulating tip
2
3. Carbon brush
3
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1. Holder cap plate
2. Screwdriver
2

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