Operation Manual

POW X117

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7 MAINTENANCE

Preventive maintenance performed by unauthorized personnel may result

in misplacing of internal wires and components which could cause serious hazard.

The machine should be repaired either by a factory authorized technician or our own service

department.

7.1 TOOL LUBRICATION

This tool requires no hourly or daily lubrication because it has been proper lubricated and is

ready to use. It is recommended that tools with gears be re-greased with a special gear

lubricant at every brush change. Or be re-lubricated after every 6 months of operation. Send

the complete tool to 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. Remove the crank cap using a wrench

(standard accessory). Rest the tool on the table with the bit end pointing upwards. This will

allow the old grease to collect inside the crank housing. Wipe out the old grease inside and

replace with genuine hammer grease (standard accessory, 45 g; 1.6 oz). Fill only with 15 g

(0.5 oz) grease one time. Reinstall the crank cap and tighten with the lock nut wrench.

• Filling with more than the specified amount of grease can cause faulty

hammering action or tool failure.

• Do not tighten the crank cap excessively. It is made of resin and is

subject to breakage.

To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or

adjustment should be performed by the authorized service centers, always using genuine

replacement parts.

7.2 CARBON BRUSHES

The brushes and commutator in your tool have been engineered for many hours of

dependable service. To maintain peak efficiency of the motor, we recommend to have the

brushes examined every two to six months. Only genuine replacement brushes specially

designed for your tool should be used.

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.

7.3 BEARINGS

After about 100-120 hours of operation, or at every second brush change, the bearings should

be replaced by our technical department. Bearings which become noisy (due to heavy load or

very abrasive material cutting) should be replaced at once to avoid overheating or motor

failure.