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PackingPacking
Packing
RodRod
Rod
NOTE:NOTE:
NOTE:
Before installing the uid packing rod into the
gun barrel, make sure the internal surfaces of the
barrel are clean. Remove any residue with a soft
brush or cloth. Check the inside of the barrel for
marks from high voltage arcing. If marks are present,
replace the barrel.
1. Place the packing nut (2f) and seal (2b‡) on the
uid rod (2e). Flats on the packing nut must face
the back of the uid rod. The seal o-ring must
face away from the packing nut.
2. Fill the inner cavity of the spacer (2h‡) with
dielectric grease (44). Place the spacer on the
uid rod (2e) in the direction shown. Generously
apply dielectric grease to the outside of the
spacer.
3. Place the uid packing (2c‡) on the packing rod
(2e) with its lips facing the front of the rod. Install
the needle packing (2d‡) with the male end
toward the uid packing, then install the housing
(2g) .
4. Lightly tighten the packing nut (2f). The packing
nut is properly tightened when there is 3 lb (13.3
N) of drag force when sliding the packing housing
(2g) assembly along the rod. Tighten or loosen
the packing nut as needed.
5. Install the o-ring (2a‡) on the outside of housing
(2g). Lubricate the o-ring with non-silicone
grease, Part No. 111265. Do not over-lubricate.
6. Install the spring (17) against the nut (2j) as
shown.
7. Install the packing rod assembly (2) into the
gun barrel. Using the multi-tool (41), tighten the
assembly until just snug.
8. Install the electrode. See
Electrode Replacement, page 39.
9. Install the nozzle and air cap. See
Air Cap and Nozzle Replacement, page 38.
10. Install the trigger (12) and screws (13).
11. See Test Gun Resistance, page 31.
Figure 23 Packing Rod
3A2494D
41