Operation; Maintenance; Replacing Carbon Brushes - Makita HM1801 Instruction Manual

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
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.
Never use gasoline, benzine, thinner, alcohol or the
•
like. Discoloration, deformation or cracks may
result.

Replacing carbon brushes

Fig.6
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 hex wrench to remove the motor housing cover.
Fig.7
Remove the cap rubber.
Fig.8
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.
Fig.9
Lubrication
Fig.10
Fig.11
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 lubrication
circumstances require that you should lubricate it by
yourself, proceed as follows.
First, switch off and unplug the tool.
service. However, if
Remove the cap using a lock nut wrench 20 or hex
wrench 8, then replenish with fresh grease (60 g). Use
only Makita genuine
accessory). Filling with more than the specified amount
of grease (approx. 60 g) can cause faulty hammering
action or tool failure. Fill only with the specified amount of
grease.
Fig.12
Reinstall the cap and secure with the wrench.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centers, always
using Makita replacement parts.
ACCESSORIES
CAUTION:
These accessories
•
recommended for use with your Makita tool
specified in this manual. The use of any other
accessories or attachments might present a risk of
injury to persons.
attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
Bull point
•
Cold chisel
•
Scaling chisel
•
Clay spade
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Rammer
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Safety goggles
•
Hammer grease
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Hex wrench
•
Lock nut wrench
•
6
hammer grease (optional
or attachments
Only use accessory or
are