8
CompleteMaintenanceoftheVRSystem
Completesystemmaintenanceshouldbeperformedonceeachyearorevery400systemoperating
hours,whicheveroccursfirst.Again,aswithpreviousserviceitems,youmayhavetoservicemore
frequentlyinsevereoperatingconditions.
Completemaintenancenotonlyincludesreplacingoilandfilters,italsoincludesacompleteinspection
of
thesystem.Thiswillensurethatthesystemcontin uestoprovideoptimumperformanceandwill
extendthelifeexpectancyofthecomponents.
Forbestresults,followthesestepsforservicing:
1.Performacompletepre‐serviceinspectionofthesystem.
2.Replacetheairfilter
3.Draintheoilfrom
thesystem
4.Replacetheoilfilter
5.Replacethecoalescingseparatorandcleanorreplacethescavengefilter
6.Fillthesystemwithoilandcheckoperation
ReplacingtheAirFilter
Followtheproceduresoutlinedpreviouslyforairfilterreplacement.
DrainingOilfromtheSystem
Theoilshouldbedrainedfromthesystembeforechangingfiltersorcleaningthescavengefilter.Make
surethatyouhaveasuitablecontainerthatwillholdapproximately2gallons(US)beforeyoubegin.
Whendrainingtheoil,followthisprocedure:
1.Makesurethatallairpressureisventedfrom
thesystem.Ifthereisanypressureinthesystem,you
couldbeinjuredwhenyouremovethedrainplug.
2.Placethedraincontainerunderthetankbelowthedrainplug.
3.Usingthecorrecttool,removethedrainplugfromthetank.Becarefulwhendrainingthetank.
Ifthe
systemwasoperatedrecently,theoilmaybeveryhotandcancauseburns.
4.Cleanthedrainplugthr eadsandinspectthemfordamage.
5.Cleanandinspectthethreadsinthetank.
6.Installandtightenthedrainplugsecurely.