Case 590ST - Page 122

3-CONTROLSANDINSTRUMENTS
Attachmentmechanicalcontrols
Thesecontrolleversareusedtooperatethebackhoeattachment.Thespeedofmovementofeachcontroldepends
ontheangletowhichtheleveristilted.Intheintermediateposition,twomovementscanbeobtainedsimultaneously.
Fourbackhoeattachmentcontrolcongurationsexist,dependingonthecountryconcerned:
•
Standardconguration
•
ISOconguration
•
Fourleverpatternconguration
•
Cross-patternconguration
Theoperatingpatternofthecontrolleversisdifferent.Checkwhichcongurationyouhaveonyourmachine.
Standardconguration
Backhoeboomandbackhoeattachmentswingleft-handcontrollever
Thisleverhasvepositions:
Position0:Neutral/hold.Thispositionenablestheattachmentmovementtobestopped.Assoonastheleveris
released,itautomaticallyreturnstotheneutralposition0andtheattachmentremainsinthepositionwhereitwas
whenmovementstopped.
PositionA:Theboomlowers.
PositionB:Theboomrises.
PositionC:Thebackhoeattachmentswingstotheleft.
PositionD:Thebackhoeattachmentswingstotheright.
Backhoedipperandbackhoebucketright-handcontrollever
Thisleverhasvepositions:
Position0:Neutral/hold.Thispositionenablestheattachmentmovementtobestopped.Assoonastheleveris
released,itautomaticallyreturnstotheneutralposition0andtheattachmentremainsinthepositionwhereitwas
whenmovementstopped.
PositionE:Thebackhoedipperextends.
PositionF:Thebackhoedipperretracts.
PositionG:Thebackhoebucketcloses.
PositionH:Thebackhoebucketopens.
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