Graco Inc. 307-712 Paint Sprayer User Manual


 
25
307-712
SERVICE
Disc Regulator OĆRing Replacement
1. Unscrew the turbine air line from the adapter (86).
See Fig 22.
2. Remove the cap screw (90) and washer (89) from
the gun body (1).
3. Pull the adapter (86), with the air valve (88), out of
the gun body.
4. Unscrew the adapter (86) from the air valve (88),
and remove the disk regulator (3).
5. Clean and inspect parts for wear or damage and
replace if necessary.
6. Clean and inspect the two oĆrings (87) and one
ring (85) on the air valve. Replace if necessary. LuĆ
bricate the oĆrings with petroleum jelly.
7. Install the disc regulator (3) into the air valve (88) so
its beveled surface faces into the gun.
8. Screw the adapter (86) into the air valve (88), and
install the air valve into the gun body (1).
9. Screw the cap screw (90), with the washer (89), into
the gun body (1).
10. Screw the turbine air line onto the adapter (67).
Muffler Replacement
1. Remove the fan air valve assembly as instructed in
Fan Air Valve Replacement.
2. Remove the elbow (76) with the tube (78) from the
gun body (1). See Fig 23.
3. With a hook, remove the muffler (77) from the gun
body and replace with a new muffler.
4. Install the elbow (76) in the gun body.
5. Install the fan air valve assembly as instructed in Fan
Air Valve Replacement.
KEY
1 Gun Body
76 Muffler
77 Elbow
78 Tube
Fig 22
Fig 23
KEY
1 Gun Body
3 Regulator Disk
85 O-Ring
86 Adapter
87 OĆRing
88 Air Valve
89 Washer
90 Cap Screw
1
77
76
78
86
3
85
88
87
1
89
90