Peterbilt 348 2017 - Page 150

STARTING&OPERATING
Transmission
Incoldweather(below32°F(0°
C),youmayndshiftingsluggish
whenyourststartup.Transmission
warm-upisespeciallyimportantat
thistime,butitisalwaysagood
ideatowarm-upyourtransmission
beforestartingoutontheroad.To
warm-upthetransmission,followthese
procedures.
Towarm-upthetransmission
lubricatingoilduringenginewarm-up,
withasingletransmission(manualand
automatic):
1.PutthetransmissioninNeutral.
2.Releasetheclutchpedal(manual
only)andoperatethetransmission
inneutralfor3to5minutesprior
tooperatingthetransmissionin
eitherforwardorreverserange.
3.Ifyouhaveatwo-transmission
combination:
a.Putthemaintransmissionin
gear.
b.Puttheauxiliarytransmission
inNeutral.Thiswillallow
thetransmissioncountershaft
toturn,agitatingtheoiland
warmingit.
4-10Y53-6060-1C1(03/17)
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