8
307001
Troubleshooting
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 6.
Note:
Before servicing this equipment always make
sure to
relieve the pressure
.
Note:
Check every possible problem and solution
before disassembling the pump.
Problem
Cause
Solution
Pump won’t run.
Not enough air pressure or volume.
Check, increase.
p
Closed or clogged air valve or line.
Open, clear.
Air motor inoperative.
Service. See manual 306982.
Pump runs, but RES output low on
upstroke*.
Dirty, worn, or damaged RES pump piston
valve.
Service. See manual 307430.
p
Worn or damaged RES pump piston
packings.
Service. See manual 307430.
Pump runs, but RES output low on
downstroke*.
Dirty, worn, or damaged RES pump intake
valve.
Clean, service. See manual 307430.
Pump runs, but RES output low on
both strokes*.
Dirty, worn, or damaged RES pump intake
valve.
Clean, service. See manual 307430.
Empty or inadequate fluid supply.
Refill or change container.
Pump runs, but ISO output low on
upstroke*.
Dirty, worn, or damaged ISO pump piston
valve.
Service. See manual 307430.
p
Worn or damaged ISO pump piston pack-
ings.
Service. See manual 307430.
Pump runs, but ISO output low on
downstroke*.
Dirty, worn, or damaged ISO pump intake
valve.
Clean, service. See manual 307430.
Pump runs, but ISO output low on
both strokes*.
Dirty, worn, or damaged ISO pump intake
valve.
Clean, service. See manual 307430.
Empty or inadequate fluid supply.
Refill or change container.
Fluid leaks around fluid pump packing
nut.
Loose packing nut or worn throat pack-
ings.
Tighten, replace. See manual 307430.
Pump speeds up or runs erratically.
Empty or inadequate fluid supply.
Refill or change container.
p p
p
y
Air in fluid lines.
Purge, check connections.
* Fluids ratio will be wrong.
Summary of Contents for Hydra-Cat A Series
Page 4: ...4 307001 Notes ...
