Note: The small O-ring on the bottom of the air cylinder body
is held in place by a flat retaining washer that also serves as
the packing spring seat. It may come out with the spring.
Ensure that it is back in place before reinstalling the packing
spring (see Figure 2).
15 / Valve Maintenance
Figure 2
Proper assembly order for reinstalling needle packings.
from the needle.
7. Clean the needle with a cloth dampened in solvent.
8. Lubricate the needle with Nye Lubricant #865 gel and
reinstall the needle packing spring and packings in
accordance with Figure 2 below.
9. Install a new O-ring (#7517) on the fluid chamber.
Screw the air cylinder onto the fluid chamber. Hand
tighten only. The chamber can be backed off 1/2 turn
from the air cylinder body to orient fittings.
10. Reinstall the nozzle, air cap, retainer and fittings.
Reinstall the needle stroke control and spring. Turn
back to the desired setting.
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