Repair
3A3373C 11
Air Seal Replacement
(Use Seal Replacement Kit, 287229.)
1. Remove air valve retainer (21),
compression spring (19), air valve seal
(18) and needle (17) through back of
gun.
2. Use a hook-shaped object to carefully
pull u-cup seal (4) out of gun.
3. Push new seal (4) in place using a small
diameter (1/4 in. or smaller) object.
Make sure seal is seated against sleeve
bearing (36).
4. Replace air valve needle (17) seal (18),
spring (19) and O-ring (20) if necessary.
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