OPERATION281
1Thebestpossiblestopwillbemadewhentherstbrakeapplicationisasrmas
thespeedandroadconditionpermit.Then,easeoffasthespeedisreduced.Never
applythebrakeslightlyatrstandincreasethepressureasthespeeddiminishes.
2DONOTfanthebrakepedal.Fanninggivespoorbrakeperformanceandwastes
air.
3Theairbrakeisdesignedsothatwhenthebrakepedalisfullydepressed,an
emergencyapplicationresults.Thisapplicationshouldbemadeonlyinan
emergencysituation.
4Inmakingastoporaslow-down,allowthetransmissiontoremainingearwiththe
throttleclosed,disengagingtheclutchonlywhenengineidlingspeedisreached.
5Whenparkingthevehicle,placethetransmissioninneutralandsettheparking
brakebeforeshuttingdowntheengine.
6Whendescendingalonggrade,donotusetheservicebrakestoolongortoooften.
Thebrakesmayoverheatandlosetheireffectiveness.
7Beforedescendingasteepgrade,thetransmissionshouldbeshiftedintoalower
gearandthevehiclespeedreduced.Otherspeedretardingdevicesshouldalsobe
usedifavailable(enginebrakes,retardersortrailerhandcontrolvalves).
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