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66605X-X (en)Page 8of 8
TROUBLE SHOOTING
Product discharged from air exhaust.
S Check for diaphragm rupture.
S Check tightness of (6) diaphragm nut.
Air Bubbles in Product Discharge.
S Check connections of suction plumbing.
S Check band clamps on intake manifold.
S Check “O” rings between intake manifold and fluid caps.
S Check tightness of (6) diaphragm nut.
Pump blows air out main exhaust when stalled on either stroke.
S Check “U” cups on (111) spool in major valve.
S Check (141) valve plate and (140) insert for wear.
S Check (103) sleeve and (2) “O” ring on diaphragm connecting rod.
S Check (119) “O” rings on (118) piston for wear.
Low output volume.
S Check air supply.
S Check for plugged outlet hose.
S For thepump to primeitself, itmust be mountedin thevertical posi-
tion so that the balls will check by gravity.
S Checkforpumpcavitation -- suctionpipeshouldbe1/2”min.orlarg-
er if high viscosity fluids are being pumped. Suction hose must be
non-collapsible type, capable of pulling a high vacuum.
S Checkalljointsonintakemanifoldsandsuctionconnections.These
must be airtight.
S Check for sticking or improperly seating check valves.
S 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, theyare 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 N.P.T.
Material Outlet
1/2 - 14 N.P.T.
Air Inlet
1/4 - 18 N.P.T.
Material Inlet
1/2 - 14 N.P.T.
NOTE:LOOSENINGTHESE
FASTENERSWILLALLOW
INLET/OUTLETTOROTATE.
6-7/16”
(164 mm)
Figure 4
PN 97999-99