Numa Patriot RC50, Инструкции по уходу и обслуживанию

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Page 4
11/06/20
Patriot
®
RC50
SECTION II
MAINTENANCE
DISASSEMBLY
•
If at all possible, the backhead and chuck / metering sleeve should be broken loose
on the drill rig; this is much easier than trying to do so after the drill has been removed
from the drill rig. The connector tube, if used, should be removed at this time. Cap
the backhead to reduce external contamination. Using a small screwdriver pick the
o-rings from the inside diameter of the small end of the connector tube.
CAUTION
USE CAUTION WHEN HANDLING DOWN THE HOLE HAMMER PARTS. NUMA HAMMER
PARTS ARE MANUFACTURED FROM HARDENED, HEAT TREATED MATERIALS. DROPPING
OR STRIKING THESE PARTS MAY CAUSE SEVERE DAMAGE. STRIKING THE HAMMER
PARTS WITH HAMMERS, CROWBARS OR LIKE INSTRUMENTS WILL VOID THE WARRANTY.
•
Maintenance should be performed in a clean environment.
• Tools needed: overhead crane, hammer stand, chain vise, 2" (51 mm) diameter brass
rod, rubber mallet, snap ring pliers, press, a small screwdriver and a scribe.
•
Clean the outside of the hammer. This will insure a good surface to clamp on.
• Using an overhead crane place the hammer horizontally on a hammer stand and
secure the hammer with a chain vise. Place the chain vise on the area of the case
where the bit bearing is housed when working on the chuck end of the hammer. When
working on the backhead end of the hammer, place the chain vise on the area of the
case where the backhead bearing is housed.
CAUTION
THE ACCEPTABLE CLAMPING AREAS START 4-1/2" (114 MM) FROM EITHER CASE END,
TO AN ADDITIONAL 2-1/2" (64 MM) BEYOND THIS POINT. PLACING THE CHAIN VISE
ON THE AREA OF THE CASE WHERE THE PISTON CYCLES OR ON THE THREADED AREAS
CAN DISTORT THE CASE AND THE CASE THREADS, RESTRICT PISTON MOVEMENT AND
VOID THE WARRANTY.
HAMMER DISASSEMBLY
•
Break the bit and chuck loose from the case.
•
Remove the bit, chuck and bit retaining rings from the case. Remove the metering
sleeve from the chuck.
•
Using a small screwdriver, remove the o-ring from the chuck.