Case 580SR Service Manual page 161

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2.2 CONTROLS
4X2 POWERSHIFT TRANSMISSION CONTROL
1. POWERSHIFT TRANSMISSION GEARSHIFT
AND DIRECTION LEVER: four gears are se-
lectable for the required ground speed in for-
ward and two gears for reverse travel.
IMPORTANT: the gearshifts and the direction of
travel are governed by the microprocessor, which
enables smooth and safe changes, irrespective of
the selected gear. Therefore upshifting, downshift-
ing or change of travel direction by means of the
gears will only occur when the monitored machine
speed is safe to do so.
2. DIFFERENTIAL LOCK SWITCH: depressing
the spring loaded switch will lock both rear
wheels together giving equal drive and will dis-
engage when wheel torque equalises or the foot
brakes are applied.
3. LOADER ATTACHMENT CONTROL LEVER
4. TRANSMISSION DISCONNECT BUTTON
SECTION 21 - TRANSMISSION
5. ROLLER FOR THE PROPORTIONAL CON-
6. KICKDOWN SWITCH: if the machine is in 2nd
4x2 powershift transmission
The transmission installed on this machine has
been designed for gearshifting, although it contin-
ues driving the wheels, according to the selected ra-
tio and travel direction. The transmission is
controlled by a microprocessor located in the pow-
ershift gearshift lever unit (1).
The gearshift lever (1) with electronic gear selection
actuates the powershift gearshift with 4 forward and
2 reverse speeds.
TROL OF LOADER BUCKET 4x1
gear and 1st is required for loader work engag-
ing kickdown instantly drops the gear from 2nd
to 1st. When reverse is selected the transmis-
sion reverts to 2nd gear.
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