Maintenance And
Servicing
Procedures not specifically explained in this manual must be performed only by a qualified technician.
To prevent serious injury
from accidental operation:
Turn the Power Switch (96) of the Rotary Hammer to its “OFF” position and unplug the tool from its electrical outlet before performing any inspection, maintenance, or cleaning procedures.
To prevent serious injury from tool failure:
Do not use damaged equipment. If abnormal noise or vibration occurs, have the problem corrected before further use.
1.BEFORE EACH USE: Inspect the general condition of the Rotary Hammer. 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.
2.AFTER EVERY 50 HOURS OF USE: Use the Spanner Wrench provided to unscrew the Grease Cap (18). Add the Grease provided. Then, replace and tighten the Grease Cap. NOTE: The Rotary Hammer is
only needed beginning after about 50 hours of use. (See Figure A.)
3.TO CHANGE OR CLEAN THE CARBON BRUSHES: It may become necessary at sometime to replace or clean the two Carbon Brushes (82) when Motor performance decreases, or stops working completely. The Carbon Brushes are located on each side of the Motor Housing (78). To change or clean the Carbon Brushes:
•Remove the two Brush Covers (81). Then remove the Carbon Brushes.
•If the Carbon Brushes (82) are worn down more than 1/2, replace both
Brushes.
•If the Carbon Brushes (82) are only dirty, they may be cleaned by rubbing them with a pencil eraser.
•When installing the Carbon Brushes (82), make sure the carbon portion of the Brushes contact the Motor Armature, and that the springs face away from the Armature. Also, make sure the springs operate freely. After replacing or cleaning, replace the two Brush Covers (81).
•NOTE: New Carbon Brushes (82) tend to arc or spark when first used until they wear and conform to the Armature. (See Figure A.)
4.After Use: Clean external surfaces of the tool with a clean cloth.
5.WARNING! If the Power Cord
(112) of this Rotary Hammer is damaged, it must be replaced only by a qualified service technician.
SKU 97743 | For technical questions, please call | Page 13 |
