Numa Champion RC300, Инструкции по уходу и обслуживанию

Страница: 10 / 27

Page 6
04/21/20
Champion
®
RC300
CAUTION
THE ACCEPTABLE CLAMPING AREAS START 11.500" (292 MM) FROM EITHER CASE END,
TO AN ADDITIONAL 10" (254 MM) BEYOND THIS POINT. PLACING THE VISETONG ON
THE AREA OF THE CASE WHERE THE PISTON CYCLES CAN DISTORT THE CASE, RESTRICT
PISTON MOVEMENT AND VOID THE WARRANTY.
•
With the chuck secured in the fork wrench, (see figure 2-1) loosen the joint by turning
the case with the visetongs. Remove the hammer from the wrench and turn the hammer
end for end in the hammer stand / wrench. With the backhead flats secured in the fork
wrench (see figure 2-1) loosen the joint by turning the case with the visetongs.
•
Remove the connector pins from the top of the flange.
• With the crane or lift truck, move the hammer into an upright position with the chuck end
down. With an adequate lifting device, lift and support the hammer while unscrewing the
chuck. After setting the hammer down, and while lifting and supporting the backhead,
unscrew and remove the backhead from the case.
• Remove the backhead o-ring and thrust washer from the backhead.
•
Remove the collection tube o-ring from the backhead I.D. on the drill rod mating end.
•
Remove the check valve seat, the check valve and the check valve spring from the
backhead end of the case. The check valve seat is equipped with two 1" UNC tapped
holes for lifting eyes to facilitate removal.
Hammer Stand/Wrench Diagram
Figure 2-1
Pulldown Visetongs
Petol No. VTDA120
Force Direction Required:
15,000 - 25,000 lbs.
(6,800 - 11,400 Kg.)
Hammer stand and wrench
combination, structural steel,
I-Beam, weld construction
bracing to suit.
Blocking to height
of stand