Graco Inc. 2004230905 Paint Sprayer User Manual


 
Repair
309856P 41
Check Valves
Before disassembling, press on ball (36c) to test
check valve for proper movement and spring
action.
1. Follow Pressure Relief Procedure, page 18.
2. Flush Gun, page 22.
3. Disconnect air (D) and remove fluid manifold (G).
Clean and inspect check valve mating surfaces
and fluid ports.
CAUTION
To prevent cross-contamination of the check valves,
do not interchange A component and B component
parts. The A component check valve is marked with
an A.
4. Pry out check valves (36) at notch.
TI3837a
G
D
WARNING
Read warnings, page 9. Damaged check valve o-rings
(36f, 36g) may result in external leakage. Replace
o-rings if any damage is seen.
5. Slide filter (36d) off. Clean and inspect parts. Thor-
oughly inspect o-rings (36f, 36g). If necessary,
remove screw (36b) and disassemble check valve.
6. Reassemble check valves. Screw (36b) should be
flush (within 1/16 in. or 1.5 mm) of housing (36a)
surface. Liberally lubricate o-rings (36f, 36g) and
carefully reinstall in fluid housing.
7. Attach fluid manifold. Connect air. Return gun to
service.
36b
36
B
A
36e
36c
36d
36g
36a
36f
TI3836a