Graco Husky 715 Instructions And Parts List page 13

PROBLEM
Air bubbles in fluid.
Fluid in exhaust air.
Pump exhausts air at stall.
Pump exhausts air from clamps.
Pump exhausts air near air valve.
Pump leaks fluid from check valves.
Troubleshooting
CAUSE
Suction line is loose.
Diaphragm (401, 404) ruptured.
Loose manifolds (102) or damaged
o-rings (113).
Loose fluid side diaphragm plates
(116).
Diaphragm (401, 404) ruptured.
Loose fluid side diaphragm plates
(116).
Worn air valve cup (5) or plate (13).
Worn shaft seals (31‡).
Loose clamps (109).
Air valve screws (10) are loose.
Air valve o-ring (19) is damaged.
Worn or damaged o-rings (113).
Loose manifolds (102).
SOLUTION
Tighten.
Replace. See page 21.
Tighten manifold screws (105);
replace o-rings (113). See page 20.
Tighten screw (114). See page 21.
Replace. See page 21.
Tighten screw (114). See page 21.
Replace. See pages 17, 18.
Replace. See page 21.
Tighten clamp nuts (110).
See page 11.
Tighten screws. See page 14.
Inspect; replace. See pages 17, 18.
Inspect; replace. See page 20.
Tighten manifold screws (105).
Refer to page 20.