Graco Inc 308584 manual Air Cap/Nozzle/Resistor Stud Replacement continued, Installation, Service

Service

Air Cap/Nozzle/Resistor Stud

Replacement (continued)

4.Unscrew the resistor stud (22) from the fluid nozzle (21) with the multi-tool (62). See Fig. 17.

WARNING

FIRE, EXPLOSION, AND ELECTRIC

SHOCK HAZARD

The resistor stud contact ring (D) is a conductive contact ring, not a sealing o-ring. See Fig. 16. To reduce the risk of sparking, which could cause a sparking or electric shock, do not remove the resistor stud contact ring (D) or operate the gun without the contact ring in place. Do not replace the resistor stud (22) with anything but a genuine Graco part.

5.Remove the retaining ring (2) to free the air cap (1) from the retaining nut (8).

Installation

8.Tighten the retaining nut (8) until the air cap is held firmly in place; you should not be able to rotate the air cap horns by hand.

Apply a very light coat of lubricant to the o-ring (25).

Tighten the nozzle (21) hand-tight, then 1/8 to 1/4 turn more.

1

8

2

62

21 

22 D

25 

20

1.	Lightly lubricate the o-ring (25) with petroleum jelly,
	and install it on the resistor stud (22). See Fig. 16.
2.	Make sure the electrode (20) is tightened properly,
	as shown in Fig. 18, page 32.
3.	Install the resistor stud (22) in the fluid nozzle (21)

Fig. 16

05154A

	with the multi-tool (62). Tighten the resistor stud to
	10 in-lb (1.13 NSm). See Fig. 17.
4.	Trigger the gun while installing the fluid nozzle (21)
	and resistor stud (22) assembly with the multi-tool
	(62). Tighten the assembly until the fluid nozzle
	seats in the gun barrel (1/8 to 1/4 turn past hand-
	tight). See Fig. 16.
5.	Test the gun resistance as instructed on page 28.
6.	Install the air cap (1) into the retaining nut (8), and
	secure it with the retaining ring (2).
7.	Carefully install the air cap assembly (1, 2, 8) onto
	the gun barrel. Do not bend the electrode (20)
	wire, and be sure to insert the electrode wire
	through the center air cap hole. Rotate the air cap
	horns to the desired position.

Tighten the resistor stud (22) into the nozzle (21) to 10 in-lbs (1.13 NSm).

21

22 

62

	0444A
Fig. 17

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