04/21/20
Page 7
Champion
®
RC300
•
Using a small screwdriver, pick the check valve seat o-ring from the outside diameter
of the check valve seat.
•
Remove the collection tube housing. The collection tube housing is equipped with two
1" UNC tapped holes for lifting eyes to facilitate removal.
•
Using a screwdriver, pick the two o-rings from the inside diameters of the collection
tube housing.
•
Remove the belleville washers.
•
Remove the feed tube assembly. The feed tube assembly is equipped with two 1" UNC
tapped holes for lifting eyes to facilitate removal.
•
Raise the piston out of the backhead end of the case by inserting two 8" (203 mm)
long, 1.625" (41 mm) diameter steels rods into the holes inside the piston. Put one rod
in the bottom and another rod 180 degrees opposite in the top hole. Lift the piston out
with nylon straps and a suitable lifting device.
•
Remove the thrust washer from the chuck.
•
Remove the bit retaining rings o-ring from the bit retaining rings.
•
Removal of the chuck bushing is not necessary for routine maintenance. If necessary,
lay the chuck on its side so that the bit end is facing you. Locate the seam in the chuck
bushing. Insert a screwdriver into the slot in the middle of the seam and pry the chuck
bushing from the under cut. Remove the chuck bushing from the bit end of the chuck.
•
Removal of the bit bearing and snap ring in the chuck end of the case is not necessary
routine maintenance. If necessary, remove the snap ring from the groove. Press the bit
bearing out the chuck end of the case.
•
Disassembly of the feed tube assembly is not necessary for routine maintenance. If
necessary, support the feed tube housing and suspend it in the air. Remove the feed
tube snap ring with a large screwdriver. Lower the feed tube assembly until the feed
tube contacts the work bench. The weight of the feed tube housing will let it ride down
the outside of the feed tube. Wrap a nylon strap around the flange of the feed tube
and lift it out of the feed tube housing. Slide the feed tube compression ring off the the
feed tube. (See figure 3-2 for the feed tube assembly exploded view diagram) Place
the feed tube collar toward the work bench. Using a small screwdriver, pick the feed
tube o-ring from the grooves in the feed tube housing and the three orifice o-rings from
the inside diameter of the feed tube.
Summary of Contents for Champion RC300
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