Case CX235C SR - Page 226

6-MAINTENANCE
4.Placeareceptacleofasuitablecapacityunderthe
reservoirdrainplugs,removethereservoirdrainplugs
andallowtheremainderoftheuidtoowout.
5.Changethesuctionlterandthereturnlter.See
"Cleaningandreplacementofthesuctionlter"and
"Replacingthereturnlter".
6.Installthereservoirdrainplugs.
7.Fillthereservoirwithnewhydraulicuid.See"Filling
thereservoir".
8.Replacethecoverplatesealifrequiredandinstallthe
coverplateonthereservoir.
ATTENTION:Beforeyoustarttheengine,itisveryimpor-
tantthatyoubleedairfromallthehydrauliccomponents.
See"Bleedingairfromthehydrauliccomponents".
9.Startandruntheenginewithnoloadforapproxi-
matelyveminutes.
10.Moveeachcontrolseveraltimestoremoveanyairin
thesystem.
11.Swingtheupperstructureevenlylefttorighttwocom-
pleteturnsormore.
12.Placethemachineinpositionandthenstoptheen-
gine.
13.Checktheoillevelinthehydraulicreservoirandadd
oilasrequiredandcheckthattherearenoairbubbles
inthehydraulicreservoir.
E703CA8013
6-42