Graco Inc 308741N dimensions 2b 2a

Service

12.Place the new fluid packings (5) and packing screw (8) onto the needle (13). See Fig. 27 for the orientation of the parts.

13.Insert the fluid needle (13) into the back of the insert (4) to install the fluid packings (5).

14.Tighten the packing screw (8) just enough to hold the packings (5) in the insert (4). The needle (13) must move freely. Remove the needle.

NOTE: To ensure proper alignment of the parts, follow the next steps in the order they are given.

15.Slide the insert (4) into the spray housing (2a). See Fig. 28. Align the housing with the slot and lip (A) on the gun and slide the insert into the gun

body (1).

16.Tighten the hex nut (9) onto the insert (4) hand- tight, then loosen the nut about one turn so the insert (4) and spray housing sit loosely in the gun body.

17.Lubricate and install the fluid needle (13).

18.Lubricate the fluid adjustment knob threads (21), and install the fluid spring (23) and adjustment knob.

20.To avoid galling of the fluid nozzle seat in the insert (4), apply a thin film of lubricant to the seat. Trigger the gun while you install the fluid nozzle (12) with the gun tool (28). Torque the nozzle securely to 145–155 in-lb (16–17 NSm).

21.Tighten the hex nut (9) securely to 125–135 in-lb (14–15 NSm).

41

2

3

58

13

1Spreader; tapered end down

2U-cup; lips face up

3Spacer

19. Install the trigger (10), pin (17), and screw (11).							Fig. 27
Torque the screw to 20–30 in-lb (2.3–3.4 NSm).
					2	25c
			3	25a
12	7	6	*25b
		25d
14
	1				13a	13	1
15		1
				1	26*
	11
		4
				16*
					5

02024

Item 2 includes 2a–2b

Item 13 includes item 13a

Item 25 includes 25a–25d

4						21	2
					19	3
					20* 6		1	Lightly lubricate
					22		2	Lightly lubricate threads
				23
							3	Torque to 125–135 in-lb (14–15 NSm)
	A			24	3		4	Torque to 20–30 in-lb (2.3–3.4 NSm)
*2b 2a							5	U-cup lips face air valve assembly (26)
							6	U-cup lips face away from nut (19/25a)
				17	1
		9					7	Torque to 145–155 in-lb (16–17 NSm)
*5	8		3	10
								*Parts included in Repair Kit 239–639

Fig. 28 7584A

308741 19