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66605X-X (en)
PN 97999-99
TROUBLE SHOOTING
Product discharged from air exhaust .
y
Check for diaphragm rupture.
y
Check tightness of (6) diaphragm nut.
Air Bubbles in Product Discharge .
y
Check connections of suction plumbing.
y
Check band clamps on intake manifold.
y
Check “O” rings between intake manifold and fluid caps.
y
Check tightness of (6) diaphragm nut.
Pump blows air out main exhaust when stalled on either
stroke .
y
Check “U” cups on (111) spool in major valve.
y
Check (141) valve plate and (140) insert for wear.
y
Check (103) sleeve and (2) “O” ring on diaphragm con-
necting rod.
y
Check (119) “O” rings on (118) piston for wear.
Low output volume .
y
Check air supply.
y
Check for plugged outlet hose.
y
For the pump to prime itself, it must be mounted in the
vertical position so that the balls will check by gravity.
y
Check for pump cavitation - suction pipe should be 1/2”
min. or larger if high viscosity fluids are being pumped.
Suction hose must be non-collapsible type, capable of
pulling a high vacuum.
y
Check all joints on intake manifolds and suction connec-
tions. These must be airtight.
y
Check for sticking or improperly seating check valves.
y
If pump cycles at a high rate or runs erratically, check
(119) piston “O” rings for wear.
DIMENSIONAL DATA
Dimensions shown are for reference only, they are shown in inches and millimeters (mm).
4-13/16”
(122 mm)
5-3/16”
(132 mm)
11-11/32”
(288 mm)
10-1/16”
(255 mm)
5/16” Slot
(8 mm)
8-5/32”
(207 mm)
6”
(152 mm)
5-1/2”
(140 mm)
8-15/32”
(215 mm)
Single Piece Manifold
2-1/32”
(51 mm)
6-5/32”
(156 mm)
1/2 - 14 NPT
Material Outlet
1/2 - 14 NPT
Air Inlet
1/4 - 18 NPT
Material Inlet
1/2 - 14 NPT
NOTE: LOOSENING THESE
FASTENERS WILL ALLOW
INLET / OUTLET TO ROTATE.
6-7/16”
(164 mm)
Figure 4
