OPERATION265
Brakes
Draggingbrakesincreasefuelconsumption.Theyshouldbecheckedregularly.Itis
importantthatthereleaseactionoftheairvalvesisfastandthatthemovingpartsof
thewheelbrakesarecheckedforgoodadjustmentandoperation.
Axles
Anaxleoutofalignmentincreasesrollingresistance.Regularlycheckthefrontwheel
alignmentandaxlesonboththetractorandtrailer/semi-trailer.Iftheyarecorrect,
therewillbelessrollingresistanceand,therefore,lowerfuelconsumption.
Agoodsignofanaxleorwheeloutofalignmentisuneventirewear.Checkthetires
often.
Engine
Faultyorincorrectlyadjustedenginecomponentsincreasefuelconsumption.Thelist
belowgivessometypicalcomponentsthatcaninuencefuelconsumption:
•Blocked(ontheoutside)chargeaircooler/radiatorpackage
•Faultythermostat
•Blockedfuellters
•Blockedairintakelter
•Faultyinjectors
•Dirtyturbocharger
•Airinfuelsystem
•Faultyfuelsupplypump
•Faultyfuelreliefvalve
•Faultyfanthermostat/clutch
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