Troubleshooting
28
334513A
Troubleshooting
1.
Follow
, page 23,
before checking or repairing the pump.
2.
Check all possible problems and causes before dis-
assembling the pump.
Problem
Cause
Solution
Air bubbles in fluid
Suction line is loose
Tighten
Fluid leaking
Loose fittings
Tighten fittings
Worn or damaged seals and/or pack-
ing
Adjust or tighten seals and/or pack-
ing. If leak persists, replace seals
and/or packing.
Motor running but no fluid moving
Pump stalled
Check pump for contamination
Air in pump
Prime pump
Worn or damaged check valve seals
Rebuild inlet and outlet check valves
Motor not running
Motor brushes worn or damaged
Replace motor brushes
Electrical
Check electrical connectors
Blown fuse
Replace fuse
Packings too tight
Loosen or replace packing
