Operation; Maintenance; Replacing Carbon Brushes - Makita HM1400 Instruction Manual

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2
007631
Return the tool retainer to its original position to secure
the bit.
007632
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
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
•
unplugged before attempting to perform inspection
or maintenance.

Replacing carbon brushes

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001146
1. Notched portion
2. Tool retainer
1. Commutator
2. Insulating tip
2
3. Carbon brush
3
When the resin insulating tip inside the carbon brush is
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.
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007634
Use a screwdriver to remove the brush holder caps.
Take out the worn carbon brushes, insert the new ones
and secure the brush holder caps.
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007635
Reinstall the holder cap plates firmly.
Lubrication
This tool requires no hourly or daily lubrication because
it has a grease-packed lubrication system. It should be
relubricated after every 6 months of operation. Send the
complete tool to Makita Authorized or Factory Service
Center for this
circumstances require that you should lubricate it by
yourself, proceed as follows.
First, switch off and unplug the tool.
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2
007636
5
1. Holder cap plate
2. Screwdriver
2
1. Brush holder
cap
2. Screwdriver
2
lubrication service.
1. Screwdriver
2. Plate 50
However, if