Case 580SR Service Manual page 167

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SECTION 21 - TRANSMISSION 101
Upshifting
Upshifting is achieved by turning the handgrip coun-
terclockwise (+) in single movements. If this position
is held, the processor advances the gear selection
from 2nd to 4th with intervals of 1.8 seconds.
NOTE: an upshift request after a downshift is de-
layed for 2 seconds. Should an error occur with the
speed sensor the microprocessor will not allow up-
shifts above 2nd gear and will be indicated by the "T"
LED flashing and the "N" LED flashing slower.
NOTE: if climbing up a steep incline select 2nd and
proceed, if speed and power allow upshift into 3rd
and 4th.
Downshifting
S
WARNING
If descending down a steep slope, select the second
gear, upshifting only when it is safe to do so. You
cannot downshift to reduce speed if the machine
speed is above 15 km/h.
Downshifting to the desired gear is achieved by
twisting the knob clockwise (-) in single movements.
If the knob is held in this position, the processor will
downshift from the fourth (if the gearshift lever is in
this position) to the first gear in intervals of 1.5 sec-
onds.
NOTE: if the gear requested and the shift attainable
are not the same because of torque converter tur-
bine rpm being too high, the gear position LED (e.g.
LED 4) will flash and the shift lever position will illu-
minate, not flashing, (e.g. LED 2), until the requested
gear is reached. When a gear position LED is flash-
ing this indicates that the machine has to reduce
speed to reach the requested gear.