Peterbilt 348 2017 - Auxiliary Transmission; More Transmission Tips

OPERATINGTHETRANSMISSION
AuxiliaryTransmission
Ifyouhaveanauxiliarytransmission,
seeyourtransmissionmanufacturer’s
manualforitsproperoperation.
MoreTransmissionTips
RidingtheClutch
Theclutchisnotafootrest.Donot
drivewithyourfootrestingonthe
clutchpedal.Itwillallowyourclutchto
slip,causingexcessiveheatandwear,
damagecouldresult.
ReleaseBearingWear
Whenyoumustidleyourengineforany
periodoftime,shiftyourtransmission
toneutralanddisengagetheclutch
(takeyourfootOFFofthepedal).This
helpspreventunnecessarywearto
yourclutchreleasebearing,anditis
lesstiringforyou,too.
Tips
•Alwaysusetheclutchwhen
makingupshiftsordownshifts.
•Alwaysselectastartinggear
thatwillprovidesufcientgear
reductionfortheloadandterrain.
•Neverdownshiftwhenthevehicle
ismovingtoofast.
•Neverslamorjerktheshiftlever
tocompletegearengagement.
•Nevercoastwiththetransmission
inneutralandtheclutch
disengaged.
•Toprovidesmoothgear
engagementswhileshifting,
usepropercoordinationbetween
shiftleverandclutch.
Doubleclutchingisaveryeffective
meanstoincreasetheservicelifeof
yourtransmission.Doubleclutching
referstoatechniquewheretheclutch
pedalisusedtwicepershiftinsteadof
once.Italsorequiresthatyouadjust
theenginerpminthemiddleofthe
shiftwhichultimatelysynchronizesthe
gearsduringshifting.Synchronizing
reduceswearonthegears.
(03/17)Y53-6060-1C14-23
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