Stanley Black & Decker MBX138 Automobile Parts User Manual


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16 ► MAXFORCE BREAKER User Manual
OPERATION
EACH DAY
• Checkforlooseormissingfasteners.Tightenorre-
placeasneeded.
• Inspecttoolretainingpinsandpocketsforwear.
• Checkforhydraulicleaksatallttingsandhoses.
Replaceanydefectivehoses.
• Applygreasetothegreasettinginthelowerbody
each morning. Grease as needed throughout the
workday.
• Inspectthelowerbushing,toolretainer,toolretainer
pins.Reseatorreplaceifnecessary.
TOOL STOP & LOWER BUSHING
Inspectthetoolstop,andlowerbushingforexcessive
gallingandmetalpickuponthetoolbit.Alsocheckfor
cracks.Ifcracksarepresent,thepartsmustbereplaced.
Theextentofwearofthetoolstopandlowerbushing
andthetoolbitcanbecheckedbymovingthetoolbit
backandforthandmeasuringthegapbetweenthetool
bitandthelowerbushing.Ifthegapismorethan0.354
in./9mmthetoolstop,lowerbushing,andthetoolbit
shouldbereplaced.Agapinexcessof0.354in./9mm
willcausedamagetothepiston.Donotjustreplacethe
toolbitorthelowerbushingindividuallyasthiswillresult
inprematurewearofthereplacedcomponent.Itisrec-
ommendedtoreplaceallworncomponents.
MOVE THE TOOL BIT
BACK & FORTH &
MEASURE THE GAP
BETWEEN TOOL BIT &
LOWER BUSHING
Figure12.CheckingforWear
PERIODIC MAINTENANCE CHECKS
• Periodically checkwear padclearance bymoving
thepowercellbackandforth.Setthebreakeronthe
bitandthenusetheexcavatortomoveitfromside
tosideasshownintheillustration.Ifthedeection
exceeds1.5inches,replacethewearpads.
CHECKING WEAR PLATE WEAR
MEASURETHROUGHHOLECENTERANDIF
DIFFERANCEBETWEENA&BISGREATER
THAN1.500,REPLACEWEARPLATES.
PUSHTOOLEACHWAYFORMEASUREMENT.
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