8
Operation
MANUAL Mode
MANUAL mode should be used whenever the driver wants to select the shifts
instead of letting UltraShift select them automatically. For example, when the
driver is moving around the yard, over railroad tracks, or on steep grades.
Important:
Any start gear up to the max start gear can be manually selected,
regardless of actual GCW or operating conditions. Manual selection of a start
gear that is too high for the vehicle conditions can cause damage to the drive-
train.
•
Driver manually selects the start gear and uses the up/down buttons
to shift.
•
System holds current gear unless otherwise prompted by using up /
down-shift buttons, except for the “Transmission Override” condi-
tions noted below.
Important:
If the driver requests an upshift, the transmission will attempt that
shift regardless of the operating conditions. The transmission shift quality
may be perceived as poor quality shifts or clunky shifts; however, this is by
design to ensure the transmission does everything it can to ensure it does not
miss the requested shift from the drivers input.If the transmission misses the
shift, it will attempt to engage whatever gear it can to keep the vehicle moving
in the intended direction. If the driver requests a downshift, the transmission
will complete the downshift as long as it will not over speed the engine rpm. If
the transmission misses the downshift, it will attempt to recover into whatever
gear it can to keep the vehicle moving in the intended direction.
Note:
Manual upshifts need to be selected when the engine RPM is near 2100
RPM and manual downshifts need to be selected when the engine RPM
is near 1400 RPM.
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