SERVICE -
See Figure 2.
VALVE REPLACEMENT
1. Remove four bolts securing jack shaft assembly.
2. Expose valves by lifting jack shaft and the attached diaphragm assembly
from pump base. Remove and clean or replace valves.
3. Install valves, making sure rubber flapper is UP on intake and DOWN on
discharge.
4. Replace motor-mount-diaphragm assembly and fasten evenly to base with
the four tie down bolts and washers.
DIAPHRAGM AND CONNECTING ROD REPLACEMENT
1. Remove four bolts securing jack shaft assembly.
2. Lift jack shaft and the attached diaphragm assembly from pump base.
3. Remove two diaphragm retainer screws and the bottom diaphragm
retainer.
4. Remove lock nut. Remove connecting rod and diaphragm from the top of
diaphragm retainer, then unscrew bolt to separate diaphragm plates.
5. Check diaphragm for cuts and cracks. Check rod assembly bearing for
excessive wear. Replace if badly worn.
6. Loosely reassemble diaphragm, diaphragm plates, connecting rod spacer
and diaphragm bolt onto connecting rod. Using lock nut, firmly secure
connecting rod to jack shaft. Secure diaphragm to upper diaphragm
retainer with the bottom diaphragm retainer and two screws.
7. Tighten connecting rod bolt.
8. Replace motor-mount-diaphragm assembly and fasten evenly to base with
the four tie down bolts and washers.
PULSATION DAMPENER REPLACEMENT
1. Disconnect power leads from pump and remove from mount.
2. Remove nine bottom plate screws and the bottom plate. Pull out and
replace pulsation dampener.
3. Replace bottom plate and screws. Tighten evenly to ensure an air and
water seal.
4. Reinstall pump and reconnect power leads.
TROUBLESHOOTING
PROBLEM
Loss of suction to pump.
Rough or noisy operation.
CAUTION
POTENTIAL FOR COMPONENT INCOMPATIBILITY - FOR WATER ONLY.
CAUTION
MOTOR BASE COULD GET HOT DURING EXTENDED OPERATION.
PROLONGED CONTACT WITH SKIN MAY CAUSE BURN,
www.PumpAgents.com - Click here f
-
See Figure 2.
SOLUTION
-Air leak in suction line.
-Bilge pickup not submerged.
-Intake hose kinked or plugged.
-Fouled intake or discharge valve.
-Ruptured diaphragm.
-Intake or discharge hose kinked or plugged.
-Pump not mounted firmly.
-Loosened eccentric screw.
-Ruptured or collapsed pulsation dampener.
Jabsco Pump
-
See Figure 2.
