Case 621G - Hydraulic Oil Level - Check

7-MAINTENANCE
Hydraulicoillevel-Check
WARNING
Pressurizedhydraulicuidcanpenetratetheskinandcausesevereinjuries.
Hydraulicuidisunderextremepressure.Restthebucketorattachmentontheground.Shutthe
engineoff,turnthekeyon,andmovethehydrauliccontrolleverthroughallmovementsseveraltimes
torelieveresidualpressureinthesystem.
Failuretocomplycouldresultindeathorseriousinjury.
W0161A
Checkthelevelofthehydraulicoiltankevery50hours.
Prioroperation:
Keepallnon-authorizedpersonnelclearofthearea.Parkthemachineonlevelground,inneutralwiththeparking
brakeappliedandtheattachmentloweredtotheground.
Servicespecications
TypeofoilCASEAKCELAHYDRAULICEXCAVATORFLUID
621GT otalsystemcapacity147.6L(39USgal)
721GT otalsystemcapacity177.8L(47USgal)
Fluidlevelcheck
1.Checktheoillevelinthesightgauge,beforeyoustart
theengine.Iftheoiliscold,theleveliscorrectwhen
thetopoftheoilisalignedwiththelowerindicatormark.
Iftheoilisatoperatingtemperature,theleveliscorrect
whenthetopoftheoilisalignedwiththeupperindicator
mark.
RCPH10WHL102AAH1
2.Ifoilisrequired,relieveallpressureinthesystem.
Slowlyloosenthetankcap,andtopoffuntiltheproper
oillevelisreached.Thehydraulicoilllcapislocated
underthecondensercorebehindtheoperator'scab.
LEIL16WHL0078AB2
7-46