TROUBLE
POSSIBLE CAUSE
PROBABLE REMEDY
PUMP FAILS TO
PRIME
Valves are damaged.
Leaking or worn seal or diaphragm
primer gasket.
Check diaphragm primer vacuum.
Replace leaking or worn seal or gas
ket.
Lining of suction hose collapsed.
Replace suction hose.
Air leak in suction line.
Correct leak. Replace suction hose
as required.
See documentation or manual pro
vided from pump manufacturer.
See documentation or manual pro
vided from pump manufacturer.
Diaphragm is damaged.
Check and replace as required.
DIAPHRAGM
PRIMER FAILS TO
DISCHARGE AIR /
PRIME THE PUMP
Check and replace as required.
Air leak in suction line at connections to
the diaphragm primer or priming cham
ber.
Check and tighten the hose clamps
on both ends. Replace as required.
Clogged suction / discharge port.
Remove suction / discharge hoses
and clear clog as necessary.
DIAPHRAGM PRIMER
OM-07297
TROUBLESHOOTING
PAGE D - 1
TROUBLESHOOTING - SECTION D
Review all SAFETY information in Section A.
Before attempting to open or service
the pump:
1. Familiarize yourself with this manual.
2. Shut down the engine and take pre
cautions to ensure that the pump will
remain inoperative.
3. Allow the pump to completely cool if
overheated.
4. Check the temperature before open
ing any covers, plates, or plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.
