Repair
22
313294D
Check Valves
NOTE:
Before disassembling, press on ball (36c) to test check
valve for proper movement and spring action.
1.
Follow Pressure Relief Procedure, page 10.
2.
Flush Gun, page 14.
3.
Disconnect air hose from quick disconnect (D) and
remove fluid manifold (G). Clean and inspect check
valve mating surfaces and fluid ports.
4.
Pry out check valves (39) at notch.
5.
Slide filter (39d) off. Clean and inspect parts. Thor-
oughly inspect o-rings (39f, 39g). If necessary,
remove screw (39b) and disassemble check valve.
6.
Reassemble check valves. Screw (39b) should be
flush (within 1/16 in. or 1.5 mm) of housing (39a)
surface. Liberally lubricate o-rings (39f, 39g) and
carefully reinstall in fluid housing.
7.
Attach fluid manifold. Connect air. Return gun to
service.
NOTICE
Damaged check valve o-rings (39f, 39g) may result
in external leakage. Replace o-rings if any damage
is seen.
NOTICE
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.
D
r_256998_313294_1b
G
39b
39
B
A
39e
39c
39d
39g
39a
39f
TI4987a