Packing Rod Repair
You may replace the packing rod as individual parts or as an assembly. The assembly is
Before installing the fluid 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 arc- ing. If marks are present, replace the barrel.
To assemble the individual parts:
1.Place the packing nut (26e) and seal (26b**) on the fluid rod (26h). Flats on the packing nut must face the back of the fluid rod. The seal
2.Fill the inner cavity of the spacer (26g**) with dielec- tric grease (40). Place the spacer on the fluid rod (26h) in the direction shown. Generously apply dielectric grease to the outside of the spacer.
3.Place the packing spreader (26c**), rod packing (26d**), and housing (26f) on the packing rod (26h).
26e
**26b
**26g
**26c
**26d
26f
**26a
Repair
4.Lightly tighten the packing nut (26e). The packing nut is properly tightened when there is 3 lb (13.3 N) of drag force when sliding the packing housing (26f) assembly along the rod. Tighten or loosen the pack- ing nut as needed.
5.Install the
6.Install the spring (4) against the nut (E) as shown.
7.Install the packing rod assembly (26) into the gun barrel. Using the
8.Install the trigger (30) and screws (8).
9.Install the electrode, page 43.
10.Install the nozzle and air cap, page 42.
11.Test gun resistance, page 30.
4
E
TI1489A
26h
Fig. 27. Packing Rod
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