Repair; Items Needed For Service; Repair Kits; Fan Valve Replacement - Graco 311001C Instructions And Parts List

Repair

Items Needed for Service

• Seal Installation Tool (28)-- provided
• Nut Driver Tool (29) -- provided
• Gun Tool (30) -- provided
• O-ring Pick
• 7/32 in. Hex Wrench
• 3/16 in. Hex Wrench
• Compatible Solvent
• Lubricant (part number 111265)

Repair Kits

• Seal Repair Kit 249422 is available. For best
results, use all the new parts in the kit. Kit parts
are marked with an asterisk, for example (7*).
• Acetal Seat Repair Kit 249424 (standard for
Model G15 guns) and Carbide Seat Kit 249456
(standard for Model G40 guns) are available.
For best results, use all new parts in the kit. Kit
parts are marked with a symbol, for example
(5c†).
• Acetal Seat Kit 249424 and Carbide Seat Kit
249456 can be used with both Model G15 guns
and Model G40 guns.
• Acetal Seat Kit 249424 is intended for low pres-
sure usage.

Fan Valve Replacement

1. Relieve the pressure, page 10.
2. Unscrew the fan valve packing nut (A) from the back
of the gun body (1). Slide the fan valve assembly (4)
out of the gun body. See F
3. Before reinstalling, turn the pattern adjustment valve
(C) of the replacement fan valve assembly (4) com-
pletely counterclockwise to prevent damage to the
seat (5c†). Install the replacement fan valve assem-
bly into the gun body (1). Screw the packing nut (A)
into the gun body and torque to 90 in-lb (10.5 N•m).
20
. 35.
IG
1
F . 35
IG

Complete Gun Packing Repair

Disassembly

Seat Repair

• See Repair Kits, page 20.
• Clean parts with a solvent that is compatible
with the parts and the fluid being sprayed.
1. Relieve the pressure, page 10. Remove the fluid
and air hoses from the gun.
2. Remove the air cap retaining ring (6), air cap (21),
and spray tip (33). See F
6
33
21
F . 36
IG
3. Trigger the gun to pull the needle housing off the
seat while you unscrew the diffuser (5) from the gun
body (1), using the gun tool (30).
Repair
4
C
A
1
1
Torque to 90 in-lb
(10.5 N•m).
TI6576A
. 36.
IG
TI6568A
311001C