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MAINTENANCE
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Maintain your Demolition Breaker. It is recommended that the general condition of any
Demolition Breaker be examined before it is used. Keep your Demolition Breaker in good repair
by adopting a program of conscientious repair and maintenance. Have necessary repairs made
by qualified service personnel.
CAUTION! Always make sure the power switch (66) of the Demolition Breaker is in its
"OFF" position and the tool is unplugged from its electrical outlet prior to performing any
inspection, maintenance, or cleaning.
Before each use, inspect the general condition of the Demolition Breaker. Check for loose
screws, misalignment or binding of moving parts, cracked or broken parts, damaged electrical
wiring, and any other condition that may affect its safe operation. If abnormal noise or vibration
occurs, have the problem corrected before further use. Do not use damaged equipment.
To replace the Motor Carbon Brushes: It may become necessary at sometime to replace or
clean the two carbon brushes (76) when the Motor performance decreases, or stops working
completely. The Carbon Brushes are located on each side of the Motor Casing (61). To
replace the carbon brushes, remove the two brush holder covers (79). Remove the brush caps
(77). Then, remove the two carbon brushes from the two brush holders (75). If the carbon
brushes are worn down, replace both carbon brushes. If, however, the carbon brushes are just
dirty they may be cleaned by rubbing them with a pencil eraser. If cleaning and replacing used
brushes, try to install them in the same holders and in the same direction they were removed.
When installing the carbon brushes, make sure the carbon portion of the carbon brushes
contact the motor's rotor and that the springs face away from the motor. Also, make sure the
springs operate freely. After replacement or cleaning, replace the two brush holder covers.
NOTE: New Carbon Brushes tend to arc or spark when first used until they wear and conform to
the Motor's Rotor. (See Figure G.)
Every 70 to 80 hours of tool use: Remove the oil cap (45) and replace the grease. Fill the tool
with approximately 1-1/4 ounces of #3 Lithium-based grease (not included). Then, replace the
oil cap. (See Figure E.)
To clean the exterior parts of the Demolition Breaker, use only a clean cloth and mild
detergent. Then, dry. Use a vacuum or compressed air to clean the motor air vents. Do not
immerse any electrical part of the tool in any liquids.
When storing, store the tool in a clean, dry, safe location out of reach of children.
CAUTION! All maintenance, service, or repairs not mentioned in this manual must only be
performed by a qualified service technician.
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