Graco Inc. 218-745 - Manual (Page 25)

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 oĆ
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