Nordson 1601051-02, Manual

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Trilogy
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Air-Assisted Airless LT Manual Spray Gun
13
Part 1601052-03
E 2016 Nordson Corporation
Needle Cup Seal Replacement
1. See Figure 4. Remove the needle as described in Needle
Replacement .
2. Remove the trigger screw, pin, and trigger (12, 13, 14).
3. Unscrew the chamber nut (22) and slide it off the packing gland.
4. Pull the atomizing chamber (21) off the front of the gun body. Note that
in the gun body are one small black O-ring and two larger white seals (6,
7). Inspect and replace them if damaged.
5. Unscrew the the packing gland (29) from the assembly. Remove the
gland collar (30), then pull the three O-rings and the three cup seals (33,
34) out of the gun body.
6. Install new cup seals and O-rings, gland collar, and packing gland in the
gun body. Leave the packing gland loose until the needle is installed.
7. Make sure the gun body O-ring and two seals are installed correctly.
Install the atomizing chamber on the gun body.
8. Install the chamber nut over the packing gland and thread it onto the
atomizing chamber. Tighten the nut securely.
9. Install the trigger on the gun.
10. Install the needle assembly into the gun as described in
Needle
Replacement .
Air Valve Seal Replacement
1. See Figure 4. Remove the trigger screw, pin, and trigger (12, 13, 14).
2. Unscrew the valve packing gland (40).
3. Pull out the old valve seal (39) and replace it with a new one.
4. Install the valve packing gland and tighten by hand.
5. Turn on the air supply. Tighten packing gland further if air leaks from it.
Nozzle Seal Ring Replacement
1. See Figure 4. Remove the air cap retainer, air cap, and nozzle (1, 2, 3).
2. Loosen the needle packing gland (29).
3. Unscrew the spring cap (23) and remove the spring and washers (24,
25, 26).
4. Pull the needle assembly (27, 28, 32) out of the gun. Inspect the needle
ball and replace the needle if damaged.
5. Unscrew the seal retaining screw (4) with a 10-mm socket wrench, and
remove the aluminum seal ring (5).
6. Install a new seal ring and the seal retaining screw.
7. Install the needle assembly, springs and washers, and spring cap.
8. Tighten the needle packing gland.
9. Install the air cap and nozzle and secure them with the retainer.