Outlet Check Valves - Graco e-Xtreme Operation, Repair, And Parts

Outlet Check Check Valves Valves
Outlet Outlet Check Valves
1. Perform Pressure Relief Procedure, page
disconnect the unit from the power source before
removing or servicing the outlet check valve.
2. When replacing the outlet check valve, reinstall
with the proper flow direction.
Outlet Check Check Valve Valve Repair
Outlet Outlet Check Valve
1. Flush the pump (see
Stop the pump at the bottom of the stroke.
2. Perform Pressure Relief Procedure, page
3. Disconnect the unit from the power source.
4. Place a waste container below the outlet check
valve to catch any material.
3A3164D
12, and
Repair
Repair
Prime/Flush, page 13).
12.
5. Use two wrenches to loosen the hose, then
disconnect the hose from the outlet check valve
housing.
6. Use a wrench to loosen the outlet check valve,
then remove the outlet check valve from the
pump lower.
NOTE: NOTE: NOTE: The pressure drain valve may remain
attached to the outlet check valve housing during
repair if needed.
7. Remove the outlet check valve nut from the valve
housing.
8. Remove and clean all internal outlet check valve
components. Inspect all components for wear or
damage and replace components as needed.
9. Reassemble parts in the reverse order they
were removed; ball guides (3), spring retainer,
compressor spring, and ball. Use a small blunt
tool to push that ball in and verify that the ball
and spring move freely.
10. Replace the o-ring and coat with grease.
11. Torque the outlet check valve nut onto the
housing to 75–80 ft-lb (101–108 N•m).
NOTE: NOTE: NOTE: If the pressure drain valve was removed
for the outlet check valve repair, reinstall at this
point.
12. Reattach the outlet check valve to the pump
lower and verify the flow indication arrow is
pointing away from the pump and that the
pressure drain valve outlet is facing the ground.
13. Attach the dispense hose to the outlet check
valve.
Repair
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