Install Centerline Components - Graco GX-7A Instructions Manual

Repair

Install Centerline Components

GX-7 DI Model Only
Before installation, ensure all gun components are clean
and dry. Lubricate all moving parts and threads.
1. Install the rear packing gland with a packing wrench.
Tighten onto the gun block (B).
2. Install the rear packing retainer (U) loosely.
3. Install the valving rod (N). Use a 5/16 in. nut driver
to thread assembly tight into the end cap.
4. GX-7 DI model only: thread rod until approximately
3/16 in. to 1/4 in.of thread protrudes from end of the
piston rod (K).
5. Thread the locknut onto the valving rod (N) by hand.
6. Carefully slide the gun block (B) onto the valving rod
(N) toward the air cylinder. Install the gun block onto
the gun block mounting bracket.
7. Install the safety lock (H); leave in the OPEN
position.
b
H
Red Band
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8. Connect the air supply to gun.
9. Depress the gun trigger (D) and slide the mixing
module (ZAH) over end of the valving rod (N).
28
OPEN
Red band exposed to
spray.
10. GX-7 DI model only: ensure the valving rod (N)
alignment pin enters the alignment slot in the gun
block (B). Keep the gun trigger (D) depressed.
11. With the gun trigger (D) depressed, thread mixing
module retainer (ZAM) or PCD body (ZAE) with
packing installed, by hand, and then wrench tighten.
To avoid damage to module and gun block (B), do
not over-tighten mixing module retainer (ZAM).
12. Release the gun trigger (D).
13. Install the PCD (ZAC) over end of the mixing
module retainer (ZAM).
14. Thread the PCD retainer (ZAD) onto the gun block
(B). Hand tight.
15. Rotate flat PCD (ZAC) to adjust orientation as
required.
16. Adjust the valving rod (N). See Adjust Valving
Rod, page 23.
17. Thread the air cap (M) into place; hand tight.
18. Slide the safety lock (H) onto rear of the air cylinder.
Push the safety lock partially forward and rotate
clockwise to set to OPEN.
19. Set the safety lock (H) to CLOSED (SERVICE).
H
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NOTICE
CLOSED (SERVICE)
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