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18 308741
Service
Items Needed for Service
D Gun Tool – provided
D Packing Installation Tool – provided
D Adjustable Wrench
D Screw Driver
D Lubricant part no. 111265; see Accessories, page
28, to order
D Compatible Solvent
Fluid Packings Replacement
WARNING
PRESSURIZED EQUIPMENT HAZARD
To reduce the risk of a serious injury, follow the
Pressure Relief Procedure on page 12 before
checking or repairing any part of the gun or sys-
tem.
NOTE:
D Order Fluid Packing Kit 239640. The kit includes
the spreader, u-cup, and spacer.
D Clean parts with a solvent that is compatible with
the parts and the fluid being sprayed.
D Lightly lubricate the parts indicated in Fig. 28 with
lubricant 111265.
1. Relieve the pressure.
2. Remove the air cap retaining ring (15) and air cap
(14). See Fig. 26.
3. Trigger the gun while you remove the fluid nozzle
(12) with the gun tool (28).
CAUTION
Trigger the gun whenever you tighten or remove the
nozzle. This keeps the needle seat away from the
nozzle seating surface and prevents the seat from
being scratched.
12
14, 15
28
7028A
Fig. 26
4. Remove the fluid adjustment knob (21) and fluid
spring (23). See Fig. 28.
5. Pull the fluid needle (13) out the back of the gun.
6. Remove the screw (11), pin (17), and trigger (10).
7. Remove the hex nut (9) with the gun tool (28).
8. Remove the spray housing (2a) and insert (4).
9. Unscrew the packing screw (8) from the insert (4)
with the gun tool (28).
10. Use the back end of the fluid needle (13) to push
the three fluid packings (5) out of the insert (4). Be
careful not to damage the needle or insert. Discard
the old fluid packings.
11. Check the fluid needle (13) for damage or exces-
sive wear. Replace needle tip or entire needle if
necessary.