Table of Contents
Advertisement
PROBLEM
Fluid in exhaust air.
Pump exhausts excessive air at
stall.
Pump leaks air externally.
Pump leaks fluid externally from ball
check valves.
Troubleshooting
CAUSE
Diaphragm ruptured.
Loose fluid side diaphragm plate
(105).
Worn air valve block (7), o-ring (6),
plate (8), pilot block (18), u-cups
(10), or pilot pin o-rings (17).
Worn shaft seals (402).
Air valve cover (2) or air valve cover
screws (3) are loose.
Air valve gasket (4) or air cover
gasket (22) is damaged.
Air cover screws (25) are loose.
Loose manifolds (102, 103), dam-
aged seal between manifold and
seat (201), damaged o-rings (202).
SOLUTION
Replace. See pages 19–22.
Tighten or replace. See pages
19–22.
Inspect; replace. See pages 16–17.
Replace. See pages 19–22.
Tighten screws. See page 17.
Inspect; replace. See pages 16–17,
23–24.
Tighten screws. See pages 23–24.
Tighten manifold bolts (106 and
112) or replace seats (201) or
o-rings (202). See page 18.
308550
15
Advertisement
Table of Contents
