Kenworth T410, Driver'S Handbook Manual

Page: 153 / 418

CAT: 8612 November 2019 Page 127
OPERATING INSTRUCTIONS
MANUAL Mode
MANUAL mode should be used whenever the driver wants to select the
shifts instead of letting the transmission select them automatically. For
example, when the driver is moving around the yard, over railroad tracks,
or on steep grades.
• Driver manually selects the start gear and uses the up/downshift
request procedure to shift (see Note* page 126).
• System holds current gear unless otherwise prompted by using up/
downshift request, except for the “Transmission Override” conditions
noted below.
Multiple gear upshifts and downshifts may be allowed when the up/
downshift request procedure is performed multiple times (Each request
equals one gear change request).
For optimal vehicle performance, it is recommended the vehicle be operated
in D rive mode.
Transmission MANUAL Override
• If the vehicle is being back driven and the engine is approaching a
higher than normal level, the transmission system will override the
MANUAL position and perform and upshift.
• If the start gear is changed and it causes the engine to lug at takeoff,
the transmission system will override the MANUAL position and
select the best available gear.
The PACCAR Transmission initiates upshifts from MANUAL and LOW for
engine overspeed protection.
Urge to Move
Urge to Move allows the vehicle to automatically start moving when the
transmission is in gear and the driver releases the service brake. After the
vehicle has launched the vehicle will creep at a constant speed at engine
idle without the need to apply the accelerator pedal. The configuration
is useful for stop and go applications allowing the vehicle to launch and
creep without applying the accelerator.
Use Urge to Move to launch the truck, then ease onto the throttle once
the truck is moving, this would only require ±75% throttle as opposed to
±100% throttle with otherwise high or aggressive shift pattern