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Troubleshooting
Problem
Pump does not run.
Pump speeds up or runs erratically.
Pump runs but output low on up
and/or down stroke.
Pump runs but output low on both up
and down strokes.
Excessive leakage of lubricant from
weep tube (B), page 4 or breather,
page 10.
Excessive leakage of hydraulic fluid
from weepage tube (B), page 4 or
breather, page 10.
Hydraulic oil leaks from fittings in the
upper or lower reciprocator blocks
(31, 32) [Parts page 24].
Leak at output pressure relief hole
(F
. 4, page 10).
IG
3A3005C
Cause
Closed dispense valve.
Hydraulic supply pressure too low -
see gauge (M).
Insufficient hydraulic fluid supply.
Clogged fluid outlet line, intake valve,
dispense valve, suction line.
Reciprocator damaged.
Pump piston and/or intake valve
worn.
Empty supply container.
Pump piston and/or intake valve
worn.
Insufficient hydraulic fluid supply.
Pressure too low.
Clogged fluid outlet line, intake valve,
dispense valve, suction line.
Worn u-cup packing (44), (Parts
page 24)
Worn V-block packing (16), (Parts
page 24)
Fittings 1, 5, 58, (Parts, page 24), are
loose, or their o-rings are worn or
damaged.
Wrong style fitting.
Fitting is loose
Troubleshooting
Solution
Pump only runs with valve open.
Increase supply pressure using a
pressure adjusting valve.
Check hydraulic supply. Adjust to a
maximum of 3 gpm (11 lpm) flow.
Relieve pressure, page 7. Check.
Clear obstructions.
Repair.
Relieve pressure, page 7. Check
and repair.
Refill and repair. Do not allow pump
to run dry. Monitor closely or use a
low-level cutoff valve.
Relieve pressure, page 7. Check
and repair.
Check hydraulic supply. Adjust to
maximum 3 gpm (11 lpm) flow.
Increase supply pressure using a
pressure adjusting valve.
Relieve pressure, page 7. Check.
Clear obstructions.
Repair.
Repair.
Tighten the self-sealing fittings. If
leaking persists, change o-rings.
Install correct fitting.
Tighten fitting.
9
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