Case 580SR Service Manual page 168

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102
Direction Changes
Changing driving direction is achieved simply by
shuttling the powershift lever between forward and
reverse and vice versa which is allowed at any time.
The system response however depends on machine
speed and currently engaged gear. When driving in
1st or 2nd gear direction changes are unrestricted
and are granted immediately.
F1 - R1
R1 - F1
When driving forward in 3rd or 4th gear two respons-
es are possible depending on machine speed.
RESPONSE 1: if the machine speed in forward is
above 15 km/h and reverse is selected downshift en-
gages but momentum forward remains, until the
speed lowers sufficiently to allow downshift to take
place when reverse is achieved in 2nd gear.
RESPONSE 2: if the machine speed in forward is
less than 15 km/h reverse takes place immediately
into 2nd gear.
Should a speed sensor fault be detected while in F3
or F4 a downshift sequence to 2nd gear will take
place and is indicated by the LED "T" flashing fast
and the LED "N" flashing slowly.
NOTE: if the transmission is in 1st gear forward after
a quick downshifting, the travel direction change de-
termines the selection of the second reverse travel in
order to guarantee an efficient response. Refer to
kickdown for more information.
SECTION 21 - TRANSMISSION
F2 - R2
R2 - F2
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