Troubleshooting
311831E
13
Troubleshooting
1.
Relieve the pressure.
2.
Check all possible problems and solutions before
disassembling pump.
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the Pres-
sure Relief Procedure on page 15.
PROBLEM
CAUSE
SOLUTION
Pump output low on both strokes.
Restricted air or hydraulic supply lines.
Clear any obstructions; be sure all shutoff
valve are open; increase pressure, but do
not exceed maximum working pressure.
Exhausted fluid supply.
Refill and reprime pump.
Clogged fluid outlet line, valves, etc.
Clear.
Worn piston packing.
Replace. See lower manual 311832.
Pump output low on only one stroke.
Held open or worn ball check valves.
Check and repair.
Worn piston packings.
Replace. See lower manual 311832.
No output.
Improperly installed ball check valves.
Check and repair.
Pump operates erratically.
Exhausted fluid supply.
Refill and reprime pump.
Held open or worn ball check valves.
Check and repair.
Worn piston packing.
Replace. See lower manual 311832.
Excessive hydraulic fluid supply pressure
to Viscount motor.
See Viscount motor manual 308048.
Pump will not operate.
Restricted air or hydraulic supply lines.
Clear any obstructions; be sure all shut
off valves are open; increase pressure,
but do not exceed maximum working
pressure.
Exhausted fluid supply.
Refill and reprime pump.
Clogged fluid outlet line, valves, etc.
Clear.
Damaged air motor or hydraulic motor.
See air motor manual 311238 or hydrau-
lic motor manual 308330.
Fluid dried on piston rod (17).
Disassemble and clean pump. See lower
manual 311832. In future, stop pump at
bottom of stroke.
Summary of Contents for High-Flo Viscount II
Page 16: ...Repair 16 311831E...
