operators_manual

How to Shift using Double Clutch
Method
Whether you are upshifting or down
shifting, it is best to double clutch. Double
clutching is easier on the transmission and
on the engine, helping your vehicle match
engine speed with driveline speed and
achieving clash-free shifts.
To double clutch:
1. Push the clutch pedal down to
disengage the clutch.
2. Move the gear shift lever to neutral.
3. Release the pedal to engage the
clutch. This lets you control the rpm
of the mainshaft gears, allowing you
to match the rpm of the mainshaft
gears to those of the output shaft.
a. a. Upshifts: let the engine and
gears slow down to the rpm
required for the next gear.
b. b. Downshifts: press
accelerator, increase engine
and gear speed to the rpm
required in the lower gear.
4. Now quickly press the pedal to
disengage the clutch and move the
gear shift lever to the next gear
speed position.
5. Release the pedal to engage the
clutch.
Automatic and Automated
Transmissions
An automatic or automated transmission
makes shifting much easier. It remains
important to completely understand how to
operate the transmission to optimize its
efficiency. Please read the manual for your
automatic or automated transmission
included with your vehicle.
For automated transmissions, there is no
"park" position. So you will need to apply
the parking brake before leaving the cab.
WARNING!
If your vehicle has an automated transmis-
sion, be aware that it can roll backwards
when stopped on a hill or grade, or when
starting from a stop on a hill or grade. Fail-
ure to comply may result in death, personal
injury, equipment or property damage. Ob-
serve the following guidelines: (1) When
stopped on a hill or grade, press the brake
pedal. (2) When starting from a stop on a hill
or grade, quickly remove your foot from the
brake pedal and firmly press on the acceler-
ator pedal.
WARNING!
Do not leave the cab of your vehicle without
applying the parking brake. The truck could
roll and cause an accident resulting in death
or personal injury. Always apply the parking
brake before you leave the cab.
Hill Hold
The hill hold feature is available as an
option with certain automated
transmissions. This feature holds the
vehicle while on a hill to allow the operator
to release the service brakes and press the
accelerator. This feature will hold the
vehicle if the vehicle is attempting to go up
a hill from a stop in either drive or reverse.
DRIVING - Transmission
Y53-6096-1A1 (01/17) 105
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