Operator's Manual

TorquingtheFastenersontheChain
DriveSprocket
ServiceInterval:Aftertherst10hours
Aftertherst25hours
Torquethe8studsandnutsthatsecurethesprocketforthe
diggingchaintotheplanetarydrivehousingto109to314
N∙m(81to99ft-lb);referto(Figure36).
Note:Thetorquespecicationsarefordrythreadsonly.
Figure36
CheckingtheTrencherChainWear
StripandWearChannel
ServiceInterval:Beforeeachuseordaily
1.Liftthechainatthewearstripatthetopoftheboom,
andcheckthewearstripforsignsofdamageor
excessivewear(Figure37).
Note:Ifthewearstripiswornthroughtotheframe
oftheboom,replacethewearstrip;refertoReplacing
theTrencherChainWearStrip(page22).
Figure37
Thediggingchainhasbeenremovedforclarity.
1.Wearstrip3.Wearchannel
2.Boom
2.Checkthewearchannelatthebottomoftheboomfor
signsofdamageandexcessivewear(Figure37).
Note:Ifthewearchanneliswornthroughtothe
bracketofthechannel,replacethewearchannel;refer
toReplacingtheTrencherWearChannel(page22).
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