Adjust The Actuator Arm - Graco PRO Xs Instructions - Parts Manual

Adjust the Actuator Arm

The fluid nozzle (4) must be in place when removing or
installing the jam nut and actuator arm.
1. Install the adjustment nut (30), actuator arm (29),
and jam nut (28) onto the piston rod (16b). Note that
the jam nut (28) has a slightly larger hex and a thin-
ner profile than the adjustment nut (30). See F
on page 34.
2. Position the parts so there is a 0.125 in. (3 mm) gap
between the actuator arm (29) and the fluid packing
rod nut (E), which allows the atomizing air to actuate
before the fluid. See F
3. Tighten the adjustment nut (30) against the actuator
arm (29). Check that the 0.125 in. (3 mm) gap has
been maintained. In addition, there should be 3-4
mm of electrode needle travel when the gun is trig-
gered. Adjust the jam nut position to obtain these
dimensions.
4. Install the gun shroud (48) and air cap (3), page 30.
5. Install the charging probe (2), see page 9.
6. Test gun resistance, page 22.
7. Install the gun onto the manifold and bracket. See
page 29.
29
28 30
F . 28. Actuator Arm Adjustment
IG
313227E
IG
. 28.
IG
0.125 in. (3 mm) gap
TI1567A
16b E
. 26
Gun Repair
35