Numa Patriot 45, Уход и обслуживание

Страница: 9 / 22

10/03/16 Page 5
Patriot
®
45
•
Removal of the bit bearing retainer o-ring, bit bearing and the snap ring in the chuck
end is not necessary for routine maintenance. If necessary, use a small screwdriver
or similar device to pick the bit bearing retainer o-ring from the groove. Slide the bit
bearing out the chuck end of the case. Slide the piston into the backhead end of
the case with the serial number of the piston facing the chuck end of the case. With
a 2" (51 mm) diameter brass rod, tap or press on the piston to remove the snap ring.
• To disassemble the backhead / feed tube assembly, stand the backhead / feed tube
assembly on a bench, with the API thread facing down.
•
Using a drift pin, tap the pin out of the backhead / feed tube assembly.
• Lift the feed tube assembly out of the backhead.
•
Remove the feed tube o-ring from the feed tube.
•
Removal of the check valve guide, check valve guide o-ring and choke are not
necessary for routine maintenance. If necessary, use a 3/8" (10 mm) diameter, 24"
(610 mm) long rod and tap the choke downward, toward the check valve guide.
Continue tapping both the choke, check valve guide and check valve guide o-ring
out of the feed tube. Remove the o-ring from the check valve guide.
• Remove the backhead o-ring and backhead bearing from the backhead.
•
Remove the check valve and check valve spring from the backhead.