CASE CONSTRUCTION Alpha Series - Auxiliary Hydraulics; Standard Auxiliary Hydraulics

3-CONTROLSANDINSTRUMENTS
AUXILIARYHYDRAULICS
Standardauxiliaryhydraulics
Followtheattachment’soperator’smanualonspecic
installationprocedures,operation,andremovalproce-
dures.
Auxiliaryhydrauliccouplersarelocatedontheleft-hand
loaderarm.
1.Workports—1/2inchcouplersize
2.Casedrain—3/8inchcouplersize
UsetheProportionalAuxiliary“rotary”switchontheright-
handcontrollevertooperatetheattachmentconnectedto
thestandardauxiliaryhydraulicsports.Seeyourcontrol
leverswitchcongurations3-23formoredetails.
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Relievepressurebeforeconnectingattach-
menthoses
Machineswithauxiliaryhydraulicportsarebuiltwitha
Connect-Under-Pressure(CUP)valvefortheauxiliary
hydraulicquickdisconnects.Followthisprocedureto
relievethepressurepriortoconnectingthehydraulic
hosesfromtheattachment:
1.Usingthepalmofyourhandpushthe1/2inchfemale
quickdisconnectcouplingtowardCUPvalve.When
doneproperly,thecouplingwillmoveabout10.0mm
(0.4in),relievingthestoredpressure.
2.Performthesameactionforthe1/2inchmalequick
disconnectcoupling,relievingthestoredpressure.
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