Numa Champion 330, Инструкции по уходу и обслуживанию

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Champion
® ®
® ®
®
330
MANUFACTURER OF DOWN HOLE HAMMERS AND BITS
Page 9
05/12/17
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 .030" (.76 mm).
•••••
Replace if the outside diameter is worn to 27" (686 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 emery cloth.
•••••
Clearance between the bit shank and bit bearing should not exceed .048" (1.22 mm).
•••••
Replace if necessary.
SNAP RINGS
•••••
Inspect the snap rings for severe wear indications.
•••••
Replace if necessary.
CHUCK
•••••
Inspect for cracks and burrs.
•••••
For continued use, the outside diameter should be larger than the outside of the case
or the same. Collar length should not be less than 6-3/4" (171 mm).
CAUTION
IF THE COLLAR LENGTH IS LESS THAN 6-3/4" (171 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 FAIL IN THIS AREA.
•••••
Torsional play in the splines should not exceed .375" (9.5 mm).
•••••
Inspect the drive plates and chuck bushing.
•••••
Replace if cracked or worn.