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Air Valve Piston Assembly (continued)
Quick-Disconnect and Internal Piston O-Rings
7. If the piston rod/quick-disconnect (6) has failed,
clean the foam material off the parts. If this does
not correct the problem, replace the piston rod/
quick-disconnect.
8. To remove the piston rod/quick-disconnect (6),
hold the piston rod flats with a 7/16" open end
wrench while turning the piston bolt (13); the parts
are secured with Loctite . See Fig. 35. Mark the
orientation of the pistons so they can be reas-
sembled the same way.
CAUTION
Pistons are specifically oriented. The piston
assembly will not function if parts are assembled
improperly.
9. Remove and inspect the o-rings (24, 25) inside the
piston separator (11) and the o-ring (33) on the
rear piston (15) every 1 to 1.5 million cycles. See
Fig. 36.
10. If the o-rings (25, 24, 33) are worn, replace them.
Lubricate and reinstall the o-rings.
11. Apply high strength Loctite to the piston bolt (13)
threads. Install the piston rod/quick-disconnect (6).
Torque the piston bolt to 10 ft-lb (13.5 N m). See
Fig. 35.
15
15
11
32
Fig. 36
Service
25 24
33
32
24, 25, 24
33
Install the Piston Assembly
12. Lubricate the areas specified in Fig. 34 and 36 with
lithium grease.
13. With the safety unlocked, press the piston assem-
bly into the gun body.
14. Assemble the gun as instructed on page 28 if no
further maintenance or service is required.
Apply high strength Loctite to piston bolt (13) threads.
Torque piston bolt to 10 ft-lb (13.5 N m).
Fig. 35
Lubricate the o-rings (24, 25, 32, 33) with lithium grease.
Refer to Fig. 34, also.
Lubricate the forward piston bore surface with lithium
grease.
6
13
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