Replacing carbon brushes

Remove the crank cap using a hex wrench, then replenish with fresh grease (60 g; 2 oz). Use only Makita genuine hammer grease (optional accessory). Filling

2

1

1.Commutator

2.Insulating tip

3.Carbon brush

with more than the specified amount of grease (approx. 60 g; 2 oz) can cause faulty hammering action or tool failure. Fill only with the specified amount of grease.

3

001146

1

2

1.Hex wrench

2.Crank cap

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.

 

 

1. Holder cap plate

1

2

2. Screwdriver

 

 

 

003896

 

 

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.

 

 

1. Brush holder cap

1

2

2. Screwdriver

 

003897

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 lubrication service. However, if circumstances require that you should lubricate it by yourself, proceed as follows.

Run the tool for several minutes to warm it up. Switch off and unplug the tool.

003898

1. Hammer grease

1

003899

Reinstall the crank cap securely with the hex wrench. To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be performed by Makita Authorized or Factory Service Centers, always using Makita replacement parts.

ACCESSORIES

CAUTION:

These accessories or attachments are 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. Only use accessory or 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

Rammer

Hammer grease

Safety goggles

Steel carrying case

6

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Makita HM1304B instruction manual Accessories, Replacing carbon brushes, Lubrication