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WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 12.
PROBLEM
Pump output low on both strokes.
Pump output low on only one
stroke.
Pump operates erratically.
Pump will not operate.
Pump will not prime.
Excessive throat leakage.
Troubleshooting
1. Relieve the pressure.
2. Check all possible problems and solutions before
CAUSE
Restricted air or hydraulic supply
lines.
Exhausted fluid supply.
Clogged fluid outlet line, valves, etc.
Worn piston packing (15).
Held open or worn check valve.
Worn piston packing (15).
Exhausted fluid supply.
Held open or worn check valves.
Worn piston packing (15).
Excessive hydraulic fluid supply pres-
sure to Viscount motor.
Restricted air or hydraulic supply
lines.
Exhausted fluid supply.
Clogged fluid outlet line, valves, etc.
Damaged air motor or hydraulic mo-
tor.
Fluid dried on piston rod (17).
Suction line clogged.
Held open or worn check valves.
Piston assembled with wrong nut.
Worn piston rod (17) or throat pack-
ings.
disassembling pump.
SOLUTION
Clear any obstructions; be sure all shut-
off valves are open; increase pressure,
but do not exceed maximum working
pressure.
Refill and reprime pump.
Clear.
Replace. See page 20.
Check and repair.
Replace. See page 20.
Refill and reprime pump.
Check and repair.
Replace. See page 20.
See Viscount motor manual.
Clear any obstructions; be sure all shut-
off valves are open; increase pressure,
but do not exceed maximum working
pressure.
Refill and reprime pump.
Clear.
See motor manual.
Disassemble and clean pump (see
page 20). In future, stop pump at bottom
of stroke.
Clear. Flush more frequently.
Check and repair.
Use only the large, round, special nut
(12).
Replace. See page 20.
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