Stanley Black & Decker MBX15 Power Hammer User Manual


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MBX15 User Manual ◄ 19
Ifsymptomsofpoorperformancedevelop,thefollowingchartcanbeusedasaguidetocorrecttheproblem.
Whendiagnosingfaultsinoperationofthebreaker,alwayscheckthatthehydraulicpowersourceissupplyingthe
correcthydraulicowandpressuretothebreakeraslistedinthetable.Useaowmeterknowntobeaccurate.
Checktheowwiththehydraulicoiltemperatureatleast180°F/82°C.Anapprovedtestprocedureisavailablein
thecompleteservicemanual,P/N41893.
PROBLEM CAUSE SOLUTION
Breakerwillnotre. Lowhydraulicoillevel. Fillreservoir.
Noowtobreaker. Havehydrauliccircuittestedby
authorizeddealer/distributorper
approvedprocedure.
Mainreliefsettoolow.
Internal damage. Haveunitservicedbyauthorized
dealer/distributor.
Breakerrunsslowly. Lowhydraulicow. Havehydrauliccircuittestedby
authorizeddealer/distributorper
approvedprocedure.
Excessiveheatbuildup.
Excessivenitrogenpressure. Haveunitservicedbyauthorized
dealer/distributor.
Internalleakage.
Breakerrunserratically. Loworexcessivebackpressure. Havecarrierservicedbyauthorized
dealer/distributor.
Damaged switch or connection.
Mainreliefsettoolow.
Internal damage. Haveunitservicedbyauthorized
dealer/distributor.
Toolbinding.
Lowhydraulicoillevel. Fillreservoir.
Breakerrunsbutatreducedpower. Lowaccumulatorcharge. Haveunitservicedbyauthorized
dealer/distributor.
Excessivebackpressure.
Mainreliefsettoolow.
Breakerleaksoilaroundtoolbitand
toolbushing.
Lowersealsfailed. Haveunitservicedbyauthorized
dealer/distributor.
Hydraulicsystemoverheats. Mainreliefsettoolow. Havecarrierservicedbyauthorized
dealer/distributor.
Insufcientcoolingcapabilityin
hydraulic circuit.
Line/hosesizetoosmall.
Excessivebackpressure.
TROUBLESHOOTING
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