Check Valves - Graco Fusion Instructions-Parts List Manual

Repair

Check Valves

Before disassembling, press on ball (36c) to test
check valve for proper movement and spring
action.
1.
Follow Pressure Relief Procedure, page 19.
2.
Flush Gun, page 24.
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
Read warnings, page 4. Damaged check valve o-rings
(36f, 36g) may result in external leakage. Replace
o-rings if any damage is seen.
5.
D
TI4968b
6.
7.
WARNING
Slide filter (36d) off. Clean and inspect parts. Thor-
oughly inspect o-rings (36f, 36g). If necessary,
remove screw (36b) and disassemble check valve.
B
36
Check valve filters are available, see Check Valve
Filter Option page 15.
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.
Attach fluid manifold. Connect air. Return gun to
service.
A
36b
36e
36c
36d
36g
36a
36f
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