CASE CONSTRUCTION CX80C - Page 211

6-MAINTENANCE
3.Prepareacontainerofthenecessarycapacity
anduseapumptodrainthehydraulicuidfrom
thehydraulictank.
4.Placeacontainerwithsuitablecapacityunder-
neaththetankdrainplug,thenremovethetank
drainplugtodraintheremaininghydraulicuid.
SMIL13CEX2761AB2
5.Replacethesuctionlterasdescribedonpage
6-59.
6.Replacethereturnlterasdescribedonpage
6-60.
7.Installthereservoirdrainplug.
8.Pournewhydraulicuidintothereservoir.
9.Replacethecoverplatesealifnecessaryand
installthecoverplateonthetank.
NOTICE:beforestartingtheengine,itisextremelyimpor-
tanttobleedairfromallthehydrauliccomponents.
Bleedingairfromthehydrauliccomponents
Swingreductiongear
•
Starttheengineandrunitatlowidlespeed.
Loosentheairbleedplugandcheckthatuid
owsout.Ifnecessary,stoptheengineand
addoilfromtheorice.Installtheplugbut
leaveituntightenedandstarttheengine.Run
theengineatlowidleuntiltheoilstartsowing
outoftheorice.Completelytightentheair
bleedplug.Swingtheupperstructureallthe
waytotherightandallthewaytotheleftat
leasttwotimes.Afterbleedingiscomplete,
stoptheengineforabout5min,thencheck
thattherearenoairbubblesinthehydraulic
reservoir.
SMIL13CEX2823AB3
Attachmentcylinders
•
Starttheengineandrunitatlowidlespeed.
Extendandretracttheattachmentcylinderrods
fourorvetimeswithoutbringingthemtoend
ofstroke.Thenrepeattheoperationthreeor
fourtimes,thistimebringingthecylinderrods
toendofstroke.
NOTICE:afterbleedingairfromthecomponents,stopthe
engineforabout5minandchecktherearenobubblesat
thesurfaceofthehydraulicuidinthereservoir.
6-65