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Page 13SKU 97743 For technical questions, please call 1-800-444-3353.
MAINTENANCE AND
SERVICING
Procedures not specically
explained in this manual
must be performed only by a
qualied 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.
BEFORE EACH USE:1. 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.
AFTER EVERY 50 HOURS OF USE: 2.
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 pre-greased
only needed beginning after about 50
hours of use. (See Figure A.)
TO CHANGE OR CLEAN THE 3.
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
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)
until they wear and conform to the
Armature. (See Figure A.)
AFTER USE: 4. Clean external
surfaces of the tool with a clean cloth.
WARNING! If the Power Cord 5.
(112) of this Rotary Hammer is
damaged, it must be replaced only
by a qualied service technician.