Replacement Of Parts - DeVilbiss NEPTUNE Series Operation Manual

REPLACEMENT OF PARTS

Before replacing gun parts, remove materials from the gun for cleaning. Then release the air
pressure in the gun and disconnect air hoses. All repairs should be made on a clean flat surface.
Use only appropriate tools indicated for replacement of parts.
Fluid Tip (5) and Needle (15)
1. It is recommended to replace Fluid Tip (5) and Needle (15) as a set.
2. Loosen completely Pattern Valve (10) by turning the knob counterclockwise.
3. Remove Needle Adjusting Knob (17) and Needle Spring (16) and then withdraw Needle
(15) from the gun body.
4. Remove Retaining Ring (1) and Air Cap (4).
5. Remove Fluid Tip (5) by using socket wrench or offset wrench.
6. Recommended torque of Fluid tip is 8N·m when you re-assemble.
Air Connector (22)
Air Connector (22) is fixed together by sealing material. Do not disassemble these connectors if
it is not necessary. It may become a cause of problem.
Pattern Valve (10) and Cheater Valve (21)
When disassembling and reassembling Pattern Valve (10) and Cheater Valve (21), turn the knobs
completely counterclockwise and then disassemble or reassemble them.
Air Seal Kit (11)
1. Remove Needle Adjusting Knob (17) and Needle Spring (16) then withdraw Needle
(15) from the Gun Body (9).
2. Remove Air Valve Bushing (14), Valve Spring (13), Air Valve (12).
3. From the back of the Trigger (20), push the front part of the Air Seal Kit toward the back of
the gun to remove it.
4. Hook the rear part of the Air Seal in the Air Valve Bushing (14) using a thin wire to remove it.
5. Do not reuse the removed Air Seal because usually it has been damaged.
6. Attach the new Air Seal and insert it into the body and Bushing. See the exploded view
and be careful of the installation direction when attaching.
Needle Packing (18)
1. Remove Bearing Stud kit (19) and Trigger (20) using flat-blade screwdriver.
2. Remove Fluid Adjusting Knob (17) and Needle Spring (16) from gun, and then remove
Needle (15).
3. Loosen and remove the Packing (18) using wrench.
4. Re-assembling the packing (18). Assemble into gun body by hand and then tighten using
the wrench.
5. Insert Needle (15), Needle Spring (16), and Needle Adjusting Knob (17).
6. Re-assembling Bearing Stud kit (19) and Trigger (20) using flat-blade screwdriver.
7. Trigger the gun several times to verify correct operation and adjust the packing by using
the wrench.
NEPTUNE
6