Model GX-8 Spray Gun
28
32943-1, Issue 1
NOTE:
Refer to Figure 16 for steps 6
through 17.
6.
REMOVE THE VALVE SPOOL- In order to replace the O-Rings located on the
Valve Spool take hold of the end of the Spool and pull it out. Be careful extracting
the Spool as a spring will come out with it. Make sure not to loose this spring as it
belongs in the hole at the end of the Spool. Replace the O-Rings and apply a thin
coat of Lubriplate to the O-Rings
7.
REMOVE THE VALVE LINER- Attempt to pull the Valve Liner out of the gun
handle through the trigger hole. If successful, proceed to Step11. If the Valve Liner
can not be removed, proceed to Step 8.
8.
REMOVE REAR 1/8” PLUG- In the rear of the Gun Handle locate the 1/8” Pipe
Plug. This plug seals one of the air flow paths located internally in the Gun Handle.
Using the 3/16” Hex Key, remove the Plug.
9.
REMOVE THE REAR INTERNAL 1/16” PIPE PLUG- Deeper in the hole that the
1/8” Plug was removed from locate the 1/16” Pipe Plug. This Plug seals yet another
airflow located internally in the Gun Handle. Remove that Plug using the 5/32” Hex
Key.
NOTE:
Follow Steps 8 through 16 to
replace the O-rings on the
Valve Liner. If they do not
need replacing go to step 17.
NOTE:
If the Gun is configured with
the air supply entering
through the rear of the Gun
Handle, as opposed to the
bottom of the Gun Handle,
remove the brass 1/8” pipe
nipple instead of the 1/8” Plug.
(See Figure 16)
10. REMOVE THE SPRING SEAT- Looking into the hole from which both Plugs were
removed the brass surface of the Spring Seat can be seen. Using a Pin Punch of ¼”
diameter or less, and a hammer, gently tap the Spring Seat until both it and the Valve
Liner are pushed out the opposite end of the hole.
11. REMOVE & REPLACE THE O-RINGS- Remove and replace the four O-Rings on
the Liner. Apply a light coat of Lubriplate to the O-Rings.
12. CLEAN THE VALVE HOLE AND REMOVE ANY DEBRIS- After insuring hole is
free of any dirt or debris apply a thin coat of Lubriplate to the inside of the hole.
13. REINSTALL THE SPRING SEAT- Slide the brass Spring Seat back into the Gun
Handle Air Valve hole tapered end first until it bottoms out in the hole.
14. REINSTALL THE VALVE LINER- Push in the brown Valve Liner as far as it will
go. Since there is interference between the O-rings on the Valve Liner and the inside
diameter of the hole a fair amount of resistance will be encountered. Once the Liner
has been pushed in far enough two or three internal threads will be visible. These
threads will allow engagement of the Valve Retainer Nut which when screwed in,
will align the Valve Liner and Spool to their proper depth.
15. REINSTALL THE 1/16” PLUG- Using the 5/32” Hex Key screw the 1/16” Pipe
plug back in place. Apply a small amount of pipe thread sealant to the threads prior
to insertion. This will help seal the threads and prevent air leaks.
16. REINSTALL THE 1/8” PLUG- Apply a small amount of pipe thread sealant to the
threads of the Pipe Plug or Hex Nipple. Using the 3/13” Hex Key reinsert the 1/8”
Pipe Plug.
NOTE:
If the Gun is configured with
the air supply entering
through the rear of the Gun
Handle, reinstall the brass 1/8”
pipe nipple instead of the 1/8”
Plug. (See Figure 16)
17. REINSTALL THE VALVE SPOOL- Insert the Valve Spool, with the Valve Spool
Spring in place into the Valve Liner. Screw in the Valve Retainer Nut. Be careful
not to over tighten it, just tighten until it is “snug”.
18. REASSEMBLE THE TRIGGER LEVER- Reinstall the Trigger Lever using the
Screw and Lock Nut. Tighten using the 6” Adjustable Wrench and the 6”Pliers.