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Installation
1. Perform Shutdown procedure. See Daily
Shutdown procedure in GAP Spray Gun
Manual 311322.
2. Remove flat tip assembly from end of mix-
ing chamber.
If gun has round pattern spray tip, skip to
Step 3.
3. Remove air cap from front of gun by turning
it counterclockwise.
R-Side Block
Air Seal
Air Cap
Flat Tip
F
. 1: Mixing Chamber and Gun Block Removal
IG
2
Mixing
Gun Block
Chamber
Gun Block
A-Side Block
Hex Head
Cap Screws
4. Remove side block mounting screws. Care-
fully separate each side block from the gun
block. If side blocks stick, remove dried
chemical. Wipe mating surfaces clean with
rag soaked in gun cleaner.
If side blocks require servicing, see the
Side Blocks repair procedure in GAP
Spray Gun Manual 311322.
5. Remove the two gun block mounting
screws. Slide block away from gun. If
removal is difficult, remove dried chemical.
Wipe mating surfaces clean with rag
soaked in gun cleaner. Clean gun block
with gun cleaner and brass brushes.
6. Use 3/16 in. open end wrench to hold end
of piston rod. Turn mixing chamber by hand
counterclockwise until it comes free. Clean
mixing chamber with gun cleaner and
clean-out drills. Inspect for damage and
replace if necessary.
O-Ring
Installation
Side Block
Hex Head
Cap Screws
311342A
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