Numa Patriot RC50, Инструкции по уходу и обслуживанию

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Page 8
11/06/20
Patriot
®
RC50
CASE
• Inspect the outside diameter for excessive wear or cracks. Inspect the internal case
bore for scoring.
•
Remove all minor irregularities with fine honing stones.
• Clearance between the piston and the case should not exceed .012" (.30 mm).
•
Select the larger diameter end of case to be the chuck end. Replace if the outside
diameter is worn to 4-1/2" (114 mm) or less near the chuck end.
BIT BEARING
•
Inspect the inside and outside for nicks and burrs.
•
Remove all internal irregularities with a fine honing stone.
•
Remove all external irregularities with an emery cloth.
•
Clearance between the bit shank and bit bearing should not exceed .020" (.51 mm).
• Replace if necessary.
BIT RETAINING RINGS
•
Inspect for cracks or deformations.
•
Remove all irregularities with a file or emery cloth.
•
Replace if necessary.
CHUCK
•
Inspect for cracks and burrs.
•
Collar length should not be less than 1-7/8" (48 mm).
CAUTION
IF THE COLLAR LENGTH IS LESS THAN 1-7/8" (48 MM) AND THE BIT IS UNDER LOAD
CONDITIONS, CONTACT BETWEEN THE SHOULDER OF THE BIT RETAINING RINGS
AND THE BOTTOM OF THE BIT RETAINING RING AREA ON THE BIT COULD CAUSE
THE BIT TO SHANK IN THIS AREA.
• Replace if necessary.