Mack V-MAC IV - Aftertreatment System Conditioning and PTO Operation

V-MACCo-PilotOperator'sManual47
AftertreatmentSystemConditioningandPTO
Operation
Whentheaftertreatmentsystemconditioningcyclebecomesactiveandapower
takeoff(PTO)isengaged,theenginespeed(RPM)shouldremainatthePTOset
speed,providedtheRPMandPTOengageinputsareenabled.ThePTOmustbe
activatedbyaswitchtoprovidePTOengagementandspeedinputtothevehicle
electroniccontrolunit(VECU)(sothattheenginecontrolmodule(ECM)knows
thestatusofthePTO).IftheseinputsarenotenabledandthePTOisengaged,
aftertreatmentsystemconditioningwillincreaseRPMwhencommanded,resultingin
damagetothePTO,equipmentortotheproductbeingunloaded.
Note:WhenselectingaPTOonavehiclewithaaftertreatmentdieselparticulatelter
(DPF),itisimportantthatthePTObespeciedtohaveamaximumratedspeedabove
theminimumRPM.PleaserefertoFigures18through21.
Note:ForvehiclesequippedwiththecatalyzedDPFandprolongedperiodsofengine
idletimearerequired,theenginespeedcontrolshouldnotbeusedtoincreaseRPM.
Theenginemustbeallowedtoidleasnormal.Ifprolongedengineidlingisnecessary,
itisrecommendedthattheECMbeprogrammedwithCaliforniaAirResourcesBoard
(CARB)2010compliantles.PleaserefertotheEmissionControlSystemsforMACK
Class8DieselEngines(MACKMP7andMP8Engines)manualformoreinformation.
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