3-323-32
WARNINGWARNING
Always select Neutral and apply the parking brake before leaving theAlways select Neutral and apply the parking brake before leaving the
operator’s seat.operator’s seat.
4. Mode Selection Switch -4. Mode Selection Switch - Gives the option to select between transmissionGives the option to select between transmission
'POWER' and 'ECONOMY' shift schedules. The transmission must be in Neutral'POWER' and 'ECONOMY' shift schedules. The transmission must be in Neutral
before the switch will function.before the switch will function.
The transmission torque converter is equipped with a lockup clutch which, whenThe transmission torque converter is equipped with a lockup clutch which, when
engaged by the ECU, locks the converter pump and turbine together as a singleengaged by the ECU, locks the converter pump and turbine together as a single
unit and allows power to be transmitted mechanically from the engine directly tounit and allows power to be transmitted mechanically from the engine directly to
the transmission gearing on a 1 to 1 ratio. When the lockup clutch is disengaged,the transmission gearing on a 1 to 1 ratio. When the lockup clutch is disengaged,
the torque converter acts as a fluid coupling, multiplying torque when enginethe torque converter acts as a fluid coupling, multiplying torque when engine
speed is significantly higher than transmission output shaft speed.speed is significantly higher than transmission output shaft speed.
When the Mode Selection Switch is in the 'POWER' position, the ECU controlsWhen the Mode Selection Switch is in the 'POWER' position, the ECU controls
operation of the lockup clutch according to signals received by the throttleoperation of the lockup clutch according to signals received by the throttle
position sensor (giving engine speed as a percent of throttle), the transmissionposition sensor (giving engine speed as a percent of throttle), the transmission
output shaft speed sensor, and range selector. The ECU may delay applicationoutput shaft speed sensor, and range selector. The ECU may delay application
of the lockup clutch and allow torque multiplication by the torque converter toof the lockup clutch and allow torque multiplication by the torque converter to
take place until a balance is achieved between engine speed and transmissiontake place until a balance is achieved between engine speed and transmission
output shaft speed before activating the lockup clutch.output shaft speed before activating the lockup clutch.
Power versus Economy ModePower versus Economy Mode
The POWER mode is designed for applications involving heavy loads and hillyThe POWER mode is designed for applications involving heavy loads and hilly
duty cycles where performance rather than fuel economy is of prime importance.duty cycles where performance rather than fuel economy is of prime importance.
The ECONOMY mode is designed for applications involving lighter loads andThe ECONOMY mode is designed for applications involving lighter loads and
level duty cycles or where fuel economy is more important than performance.level duty cycles or where fuel economy is more important than performance.
In the ECONOMY mode, the ECU controls operation of the lockup clutch with aIn the ECONOMY mode, the ECU controls operation of the lockup clutch with a
14891489
MANU
MANUAL AUTO AL AUTO POWEPOWER ER ECONOCONOMYMY
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