TROUBLE SHOOTING
TROUBLE PROBABLE CAUSE REMEDY
Will not hold load. Dirt on valve seats. 1. Lower lifting boom. Close
the release valve and re-
move oil filler plug.
2. Place one foot on the leg
and pull up the lifting boom
to its full height by hand.
3. Open the release valve to
lower the lifting boom.
4. Replace worn seals.
Will not lift load.
Will not lift to its full
height.
Pump feels unsteady
under load. Pump will not
lower completely.
Air block. 1. Open the release valve and
remove oil filler plug.
2. Pump handle a couple of
full strokes and close the
release valve.
Pump will not lift to its
full height. Pump feels
unsteady under load.
The reservoir could be
overfilled. Low hydraulic
oil level.
Check the oil level. Remove the
filler plug.
Top up oil to correct level.
Pump feels unsteady
under load.
The cup seal could be
worn out.
Replace cup seal.
Will not lower completely. Air block. Unit requires
lubrication.
Release air from the hydraulic
pump by removing filler plug.
Oil external moving parts.
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