Operator's Manual

Maintenance
Note:Determinetheleftandrightsidesofthemachinefromthenormaloperatingposition.
RecommendedMaintenanceSchedule(s)
MaintenanceService
Interval
MaintenanceProcedure
Aftertherst8hours
•Changetheengineoil.
Aftertherst50hours
•Checkandadjustthetracktension.
Beforeeachuseordaily
•Greasethemachine.(Greaseimmediatelyaftereverywashing.)
•Checktheengine-oillevel.
•Checktheconditionofandcleanthetracks.
•Checktheconditionofthediggingteethandreplaceanythatarewornordamaged.
•Removedebrisfromthemachine.
•Checkforloosefasteners.
Every25hours
•Cleanthefoamair-cleanerelement(moreoftenindirtyordustyconditions)—Models
22972and22973only.
•Checkthebatteryelectrolytelevel.
•Checkthehydraulic-uidlevel.
•Checkthediggingchainforexcessivewearandpropertension.
Every40hours
•Greasethetrencherhousing.
Every100hours
•Checkthepaperair-cleanerelement(moreoftenindirtyordustyconditions)—Models
22972and22973only.
•Changetheengineoil.
•Replaceorcleanandgapthesparkplug.
•Checkandadjustthetracktension.
•Checkthehydrauliclinesforleaks,loosettings,kinkedlines,loosemounting
supports,wear,weather,andchemicaldeteriorationandrepairifnecessary.
Every200hours
•Replacethepaperair-cleanerelement(moreoftenindirtyordusty
conditions)—Models22972and22973only.
•Changetheengine-oillter.
•Replacethefuellter.
•Replacethehydrauliclter.
Every250hours
•Replacetheprimaryairlterandchecktheconditionofthesafetylter(moreoften
indirtyordustyconditions)—Model22974only.
•Checkandgreasetheroadwheels.
Every400hours
•Changethehydraulicuid.
Every500hours
•Replacethesecondaryairlter.(moreoftenindirtyordustyconditions)—Model
22974only.
Every1,500hours
•Replaceallmovinghydraulichoses.
Yearlyorbeforestorage
•Checkandadjustthetracktension.
•Checkandadjustthechaintension.
•T ouchupchippedpaint
Important:RefertoyourEngineOperator'sManualforadditionalmaintenanceprocedures.
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