AW Tools AW20051, Руководство по эксплуатации и технике безопасности

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TROUBLESHOOTING
TROUBLE PROBABLE CAUSE REMEDY
Will not hold load. Dirt on valve seats.
1. Lower lifting boom. Close
the release valve and
remove 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 filter 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 over-
filled.
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.