Troubleshooting - Craftsman 48112 Operator's Manual

Jack will Jack will Jack will
not lift not hold not lift to
load load full height
X X
X
X X
X X

TROUBLESHOOTING

Symptom
Jack will
not lower
completely
X
X X
X
X
X
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Poor jack
Handle
lifting,
raises by
pump
itself while
feels
under load
spongy
X
X X
X
6
Oil level is low in jack. Add oil
as required.
Power unit may have trapped
air. Release air from system.
Release valve may not be
closing properly. Turn the
release valve clockwise tightly.
Oil reservoir is over-filled.
Drain out some oil.
Lubrication of moving parts is
necessary.
Power unit is malfunctioning.
Replace the power unit.