TECHCON TS5540-MS User Manual page 13

TS5540-MS Micro Spray Valve
User Guide
5. Pull the Needle/Piston Assembly (17) straight out from the
Air Cylinder (2)
6. Use the Snap-ring pliers to remove the small Retaining Ring (15)
7. Remove the Nylon Washer (16) and O-ring (5); replace these
parts if damaged.
8. Reinstall O-ring (5), Nylon Washer (16) and secure with a small
Retaining Ring (14).
9. Reinstall Needle/Piston Assembly (17) and secure with the large
Retaining Ring (3).
10. Reinstall Cup Seal (14) into Fluid Housing (7) by using a soft rod
(such as a wooden dowel).
11. Follow Steps #10-13 in the previous section (Section 7.1).
7.3 Needle/Tip Adapter and Air Cap Replacement (See Figure 4.0)
1. Remove Stroke Control Adjustment Knob (19) by rotating it
counterclockwise and beyond the "Line Marker" position.
2. Remove the Compression Spring (1) and the two Mylar
Washers (18) on each end of the Compression Spring.
3. Remove the Locking Nut (8) and then pull the Air Cap (11) and
needle/tip (10) away from the Fluid Housing (7).
4. Using the open-end wrench to remove the
Needle/Tip Adapter (9)
5. Reinstall the new Needle/Tip Adapter (9) and make sure the O-
ring is on the Needle/Tip Adapter. Do not over tighten!
6. Install new Air Cap (11, shown with Needle Guide installed) and
then secure it with the Locking Nut (8).
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