Graco Inc. 247937 Paint Sprayer User Manual


 
Gun Repair
312900C 35
Remove and Replace Atomizing
Air Restrictor Valve
1. Prepare the gun for repair, page 27.
2. Remove the atomizing air restrictor valve (23).
Inspect the o-ring (23c*). Replace if necessary. See
F
IG. 22.
3. Install a new atomizing air restrictor valve (23), or
disassemble and replace parts individually. The
valve protrusion must be oriented to clear the air
valve (21) shaft.
If the atomizing air restrictor valve is not desired,
install the supplied plug (2).
4. Torque the valve housing (23a) to 15-20 in-lb
(1.7-2.3 N•m).
Fig. 22. Atomizing Air Restrictor Valve
Repair ES ON/OFF Valve
1. Prepare the gun for repair, page 27.
2. Loosen the screw (48). Remove the valve.
3. Lubricate the o-rings (22a* and 22b*) with non-sili-
cone grease, Part No. 111265. Do not over-lubri-
cate.
4. Clean and inspect parts for damage. Replace if nec-
essary.
The protrusion on the retainer plate (22d) must point
upward.
5. Reinstall the valve. Torque the screw (48) to 15-25
in-lb (1.7-2.8 N•m).
Fig. 23. ES ON/OFF Valve
ti1508a
23b
23a
23d
2
23c*
NOTICE
Do not over-lubricate parts. Excessive lubricant on
the o-rings can be pushed into the gun air passage
and blemish the finish on the workpiece.
22a*
22b*
22c
22d
22e
22f
22g
ti12720