Repair
6
312101E
Compliant Cleaning Methods
1. Place spray gun in a gun washer that com-
pletely encloses the gun and components
during cleaning, rinsing, and draining.
2. Spray solvent through the spray gun into
a closed gun cleaning station.
Repair
See Parts, page 10, for callout references.
Needle Replacement
1. Remove knob (8), spring (29), and needle
(9). Inspect. Replace tip (9a) or needle (9)
as necessary. See page 2.
2. Insert needle (9), spring (29), and knob (8).
Nozzle Replacement
1. Unscrew retaining ring (14) to remove air
cap assembly (13).
2. Trigger gun while unscrewing nozzle (11) to
prevent needle damage.
3. Check o-ring (21) and replace if necessary.
4. Trigger gun while replacing nozzle (11).
5. Insert air cap assembly (13) into gun.
6. Screw retaining ring (14) into place.
Air Control Valve Replacement
1. Remove air control valve assembly (5).
2. Insert replacement assembly (5) into gun.
Air Valve Replacement
1. Remove trigger nut (24), trigger pin (23),
wave washer (18), and trigger (10).
2. Remove knob (8), spring (29), needle (9)
and nut (7).
3. Remove spring (31) and push the air valve
assembly (6) out the back of the gun.
4. Inspect u-cup seals (22) and replace if
necessary.
5. Lubricate gun as described in Mainte-
nance, page 5.
6. Insert replacement air valve assembly (6).
Replace spring (31) and nut (7).
7. Replace trigger (10), wave washer (18),
trigger pin (23), trigger nut (24), needle (9),
spring (29), and knob (8).
Needle Packing Replacement
1. Remove trigger nut (24), trigger pin (23),
wave washer (18), and trigger (10).
2. Remove knob (8), spring (29), and needle (9).
3. Unscrew nut (17) and remove u-cup (16)
and spreader (15).
4. Insert replacement spreader (15) facing
back of gun, u-cup (16) facing front of gun,
and nut (17).
5. Replace trigger (10), wave washer (18),
trigger pin (23), trigger nut (24), needle (9),
spring (29), and knob (8).
