User guide

Maintenance and Service 35
5. Place the spring retainer on the needle.
6. Using the module-adjusting wrenches, hold the seal lock-nut in place and tighten the spring
retainer for a secure tight installation.
CAUTION! To prevent damage to the needle, do not over-tighten the spring retainer.
7. To properly seat the needle, ensure that the top of the seal lock-nut is flush with the top of the
upper body.
Item Description Item Description
1 Spring Retainer 5 Air Piston
2 Seal Lock-nut 6 Needle
3 O-ring 7 Upper Body
4 Piston Insertion Tool
Figure 5-7 Installing the Air Piston using the Air Piston Insertion Tool
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