12
Trilogy
®
GP Air Spray and LVLP Gravity Fed Manual Spray Guns
© 2021 Nordson Corporation
1601056-05
Repair
WARNING:
Allow only qualified personnel to perform the following tasks. Follow the
safety instructions in this document and all other related documentation.
See Figure 4 for all repair procedures.
Replacing the Air Cap and Nozzle
The air cap (1), nozzle (2), seal (3), and needle (6) can be replaced separately or all at
the same time with a nozzle kit.
Needle Removal
1. Loosen the material adjustment lock nut (8).
2. Unscrew the material adjustment screw (9).
3. Remove the the needle pressure spring (7).
4. Pull the trigger (21) to push the needle back.
5. Pull the paint needle (6) out of the gun.
Nozzle and Air Cap Removal
1. Unscrew the air cap (1).
2.
Unscrew the fluid nozzle (2) with a 14-mm wrench.
3. Check the seal (3) and replace it if is damaged.
Assembly
1.
Install the seal (3) on the nozzle, then thread the fluid nozzle (2) into the gun and
tighten securely.
2. Thread the air cap (1) onto the nozzle and tighten it securely.
3. Insert the paint needle (6) into the gun.
4. Install the pressure spring (7) over the needle and fully into the gun.
5. Thread the material adjustment screw (9) and lock nut (8) into the gun.
6.
Before putting the gun back into production, adjust the material flow, then tighten the
lock nut (8).
