Model GX-7-DI Spray Gun
24
22943-1, Issue 1
NOTE:
Refer to Figure 13 for steps 5
through 16.
5.
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 lose 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.
6.
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.
7.
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.
8.
REMOVE THE SPRING SEAT- Looking into the hole from which both Plugs were
removed, the surface of the Spring Seat can be seen. Using a Pin Punch (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.
NOTE:
replace the O-rings on the
Valve Liner. If they do not
need replacing go to step 15.
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 13)
9.
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.
10. CLEAN THE VALVE HOLE AND REMOVE ANY DEBRIS- Ensure the hole is
free of any dirt or debris and apply a thin coat of Lubriplate to the inside of the hole.
11. REINSTALL THE SPRING SEAT- Slide the Spring Seat back into the Gun Handle
Air Valve hole, tapered end first, until it bottoms out in the hole.
12. REINSTALL THE VALVE LINER- Push the Valve Liner in as far as it will go (a
minimum of two or three internal threads should be visible). A fair amount of
resistance will be felt from interference between the O-rings and the inside diameter
of the hole. Install the Valve Retainer Nut, which when screwed in, will align the
Valve Liner and Spool to their proper depth.
13. 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.
14. 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 13)
15. 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”.
16. REASSEMBLE THE TRIGGER LEVER- Reinstall the Trigger Lever using the
Screw and Lock Nut. Tighten using the 6” Adjustable Wrench and the 6” Pliers.
