04/21/20
Page 13
Champion
®
RC300
RC300 Drive Plate Positioning as Viewed from Top
Figure 2-2
CAUTION
LIFTING THE CHAMPION RC300 HAMMER WITH THE THREAD JOINTS LOOSE MAY
CAUSE DAMAGE TO THE THREADS.
•
Install the chuck bushing in the chuck. With the bit face down, place the chuck over
the top of the bit. Align the splines and lower the chuck completely onto the bit. Rotate
the chuck counterclockwise until the splines meet and insert the drive plates between
the chuck and bit splines. (See Figure 2-2)
•
Place the bit retaining rings, with the o-ring installed, over the chuck.
•
Place the thrust washer against the chuck thread shoulder. Thread the chuck into the
case and hand tighten. The chuck should sit flat against the end of the case.
•
With the hammer in a vertical position and the bit installed, insert the collection tube.
NOTE
THE COLLECTION TUBE SHOULD BE ASSEMBLED WITH THE BIT INSTALLED IN THE
HAMMER AS THE COLLECTION TUBE, WHEN ASSEMBLED, PROTRUDES FROM THE
BOTTOM OF THE HAMMER 6.500" (165 MM).
NOTE
LUBRICATING THE OUTSIDE DIAMETER OF THE COLLECTION TUBE PRIOR TO ASSEMBLY
IS NECESSARY TO FACILITATE ASSEMBLY.
CAUTION
DUE TO CLOSE TOLERANCES BETWEEN THE CHAMPION RC300 INTERNAL PARTS AND
THE CASE, NUMA CANNOT ACCEPT RESPONSIBILITY FOR DAMAGED CAUSED BY
WELDING ON THE CASE OD. WELDING ON TEH CASE CAN CREATE DISTORTION,
CAUSE PREMATURE FAILER AND VOID THE WARRANTY. CONTACT NUMA FOR
SPECIAL INSTRUCTIONS IF WELDING THE CASE BECOMES UNAVOIDABLE.
Summary of Contents for Champion RC300
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