Air Cap/Nozzle/Resistor Stud Replacement - Graco PRO 224-094 Instructions Manual

Air Cap/Nozzle/Resistor Stud
Replacement
CAUTION
BE SURE to hold the front end of the gun up while
removing the nozzle and resistor stud. This helps
drain the gun and prevent any paint or solvent left
in the gun from entering the air passages.
1. Point the front end of the gun up while removing the
fluid nozzle (14) and resistor stud (2) assembly with
the nozzle wrench (48). This helps drain the gun and
prevent any paint or solvent left in the gun from
entering the air passages. See Fig 15 .
If the resistor stud remains in the gun when the fluid
nozzle is removed, start the nozzle thread onto the
stud and pull the stud out.
2. Using an 8 mm hex key (A), unscrew and remove the
resistor stud (2). See Fig 16 .
WARNING
The resistor stud contact ring (D) is a conductive con-
tact ring, NOT a sealing o-ring. To reduce the risk of
sparking, which could cause fire, explosion, or elec-
trostatic shock and result in serious injury, DO NOT
remove the contact ring from the resistor stud or op-
erate the gun without the contact ring in place. DO
NOT replace the resistor stud with anything but a
genuine Graco part.
T o install the resistor stud:
3. Lightly lubricate the o-ring (31) with petroleum jelly
and install it on the resistor stud (2).
4. Using an 8 mm hex key (A), install the resistor stud
(2) in the fluid nozzle (14). T
(1.12 N m).
Make sure the electrode (28) is tightened properly ,
as shown in Fig 17 , page 20.
5. Install the fluid nozzle (14) and resistor stud (2)
assembly with the nozzle wrench (48). Tighten until
the fluid nozzle seats in the gun barrel (1/8 to 1/4 turn
past hand-tight).
6. Install the air cap assembly (6, 16, 43), o-ring (12),
and retaining ring (9). T
instructed on page 16.
SERVICE
ighten to 10 in-lb
est gun resistance as
KEY
D Contact Ring
2 Resistor Stud
6, 16,
43 Air Cap Assembly
9 Retaining Ring
12 O-Ring
14
Fluid Nozzle
28 Electrode
31 O-Ring
48 Nozzle
Wrench
28
48
Fig 15
14
Torque to
10 in-lbs
(1.12 N m)
2
A
Fig 16
6, 16, 43
12
9
14
2
D
31
0443
KEY
A 8 mm Hex Key
2 Resistor Stud
14 Fluid Nozzle
0444