Check Valves - Graco A Series Instructions - Parts Manual

Check Valves

Before disassembling, press on ball (36c) to test
check valve for proper movement and spring
action.
1.
Follow Pressure Relief Procedure, page 17.
2.
Flush Gun, page 21.
3.
Disconnect air (D) and remove fluid manifold (G).
Clean and inspect check valve mating surfaces
and fluid ports.
G
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.
38
5.
6.
D
TI3837a
7.
Slide filter (36d) off. Clean and inspect parts. Thor-
oughly inspect o-rings (36f, 36g). Replace if any
damage is seen, or external leakage may result. If
necessary, remove screw (36b) and disassemble
check valve.
B
36
Reassemble check valves. Liberally lubricate
o-rings (36f, 36g) and carefully reinstall in fluid
housing.
Attach fluid manifold. Connect air. Return gun to
service.
Repair
A
36b
36e
36c
36d
36g
36a
36f
TI3836a
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