Case 621G - Uncoupling the Attachment

6-WORKINGOPERATIONS
Uncouplingtheattachment
WARNING
Avoidinjuryand/ormachinedamage!
Beforedisconnectingthecouplers,youmust:
-lowertheconnectedattachments,
-stoptheengine,
-movethecontrolleversforwardandbackwardtodischargepressurefromthehydraulicsystem.
Failuretocomplycouldresultindeathorseriousinjury.
W0933A
NOTE:ifusingahydraulicattachment,disconnecttheauxiliaryhydraulichosesfromthequickdisconnectpriorto
uncouplingtheattachment.Donottrytodisconnectthehydraulicquickcouplerwhenthesystemisunderpressure.
1.Withtheattachmentcoupled,lowertheliftarms,and
positionthecouplerintherollbackposition.
Locatethecouplerengagementbuttonontheright-
handconsoleofoperator’scompartment.Thegreen
lightison.
LEIL15WHL1831AA1
2.Pressandholdthecouplerengagementbuttontore-
tractthelockingpins.Thedisplayshowsthemessage
“CouplerpinsDisengaging”andthepinsstarttomove.
Oncethelockingpinsarefullyretracted,thegreen
lightgoesoutandtheredlightilluminates.Thedis-
playshowsthemessage“CouplerpinsDisengaged”.
Donotretractthelockingpinswiththeattachmenton
thegroundorinthedumpposition.
LEIL16WHL1125AA2
6-8