Numa Patriot 180, Инструкции по уходу и обслуживанию

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09/19/16 Page 7
Patriot
®
180
•
Removal of the bit bearing and snap ring from the chuck end of the case is not
necessary for routine maintenance. If necessary, locate the disassembly notch where
the snap ring is located. Using a pry bar, pry the snap ring out of the groove, and
remove from case. Using a 2" (51 mm) diameter brass rod, go into the case from the
backhead end, tapping the bit bearing out of the chuck end of the case.
•
To disassemble the backhead / feed tube assembly, lay the backhead / feed tube
assembly on a workbench.
•
Using a drift pin, tap the pin out of the backhead/feed tube assembly.
•
Using the 2" (51 mm) diameter brass rod, go through the API thread end of the
backhead, and tap the feed tube assembly out.
•
Remove the check valve and check valve spring from the feed tube assembly.
•
Removal of the check valve guide, and choke are not necessary for routine
maintenance. If necessary, use a 1/2" (13 mm) diameter, 36" (914 mm) long rod
and tap the choke downward, toward the check valve guide. Continue tapping the
choke and check valve guide out of the feed tube.
•
Remove the o-ring from the groove located on the outside diameter of the feed tube.
•
Remove the brass thrust washer from the backhead.
•
Remove the backhead o-ring from the backhead outside diameter.