Case CX300C - Plastic and resin parts; Checking the cylinders for leaks; Tooth tip wear limits on the backhoe bucket

6-MAINTENANCE
Plasticandresinparts
Whencleaningtheplasticwindows,theconsole,theinstrumentpanel,theindicators,etc.donotusegasoline,
kerosene,paintsolvents,etc.Onlyusewater,soapandasoftcloth.
Theuseofgasoline,kerosene,paintsolvents,etc.willcausediscoloration,cracksordeformationoftheseparts.
Checkingthecylindersforleaks
Acylinderrodshouldbeslightlyoily.Checkthattherearenoleaksafteraperiodofwork,whenthewholehydraulic
systemisatnormaloperatingtemperature.
1.Wipecleantherodandbearingonthecylindertobecleaned.
2.Operatenormallyforveortenminutes.
3.Extendthecylinderrod.
4.Carryouttheleaktest.
RODAPPEARANCETESTCONCLUSION
Dry
Slighttracesofoilwhenapieceofpaperis
wipedover20cm(7.9in)oftherod.
Normal
Slightlygreasy
Paperremainsstucktorodwhenrunoverrod.
Normal
Oily
Paperremainsstuckwhenplacedonrod.
Normal
Veryoilyorweeping
Eachtimethecylinderrodisextended,aringof
oilcanbeseenontherod.
Leakage
Eachtimetherodretracts,theexcessoildrips
fromthegland.
ConsultyourCASE
CONSTRUCTIONDealer
Toothtipwearlimitsonthebackhoebucket
Thedegreetowhichatoothtipcanbeworncanbeas-
sessedvisually.
Itispossibletoextendthelifeofatoothtipwhichiswear-
ingunevenly,inanon-symmetricalfashion.
NOTE:Donotwaitfortoothtipstobecompletelyworn
throughbeforechangingthem.
NOTICE:Nevertrytoworkwithamissingtoothtipora
toothtipwhichiswornthrough.Theadaptorcouldbe
seriouslydamaged.
R8LWQF-0021
6-61