Case CX490D - Page 323

9-ACCESSORIES
Maintenance
Aspecicmaintenancescheduleshallbeadoptedforthemachineifanyhydraulicattachmentisusedoverasigni-
cantperiodoftime.Inparticular,themaintenanceofthehydraulicsystemshallbemorefrequentbecausetheusage
ofhydraulicattachmentsseverelyaffectsthepropertiesofthehydraulicuid.
Thefollowingtableprescribestherequiredintervalsforthemaintenanceoperationstobeperformedonthehydraulic
systemofthemachinedependinguponthepercentageoftheusageoftheattachment.
10%20%40%100%
Hydraulicoillevelcheck
10h10h10h10h
Hydraulicoilsuctionltercleaning
Hydraulicoilreturnlterreplacement
Pilotlterreplacement
Hydraulicoilanalysis
800h600h300h100h
Hydraulicoilandltersreplacement
4000h3000h1500h600h
Moreover,thefollowingoperationsshallbeperformedevery10hifanyattachmentotherthanabucketisused:
•
lubricatethebucketpinsandthewholebucketlinkage.
•
checkthetighteningtorques,inparticularifthemachineisusedindemolitionapplications.
•
checktheframesandthestructuresfordamagesorcracks,inparticularifthemachineisusedindemolitionappli-
cations.
•
ifthehydraulicattachmentisused,checkthehydrauliclinesandconnectionstowardstheattachment.
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