142OPERATION
TRANSMISSIONSHIFTINGINSTRUCTIONS
CAUTION
Themaximumsafeoperatingoil
temperatureforMACKtransmissions
is121°C(250°F)formineral-basedoil,
and148°C(300°F)forsynthetic-based
oil.Continuedoperationwithoilabove
thistemperaturewillresultinrapid
deteriorationoftheoil’slubricating
propertiesandisNOTrecommended.
CAUTION
Toavoidtransmissiondamage,thevehicle
mustbecompletelystoppedbeforebeing
shiftedfromREVERSEtoanyforward
speed(andviceversa).
CAUTION
Nevercoastwiththetransmissionin
neutral.Nevercoastwiththeclutch
depressed.
ShiftingInstructionsforAllisonAutomatic
Transmissions
PleaserefertotheapplicableAllisonautomatictransmissionoperator’smanualprovided
withyourvehicleforcompleteshiftingandoperatinginstructions.
ShiftingInstructionsformDRIVETransmissions
PleaserefertotheapplicablemDRIVETransmissionOperator’sHandbookprovidedwith
yourvehicleforcompleteshiftingandoperatinginstructions.