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Operation Section
Illustration 65 g01014284
Circle Steer Mode - When circle steer mode is
selected, indicator (3A) is illuminated.
Crab Steer Mode - When crab steer mode is
selected, indicator (3B) is illuminated.
Two-Wheel Steer Mode - When two-wheel
steer mode is selected, indicator (3C) is
illuminated.
Use of Steering Modes
The machine can be operated in the following steering
modes:
• Two-Wheel Steer
• Circle Steer
• Crab Steer
Only the front wheels are steered in two-wheel steer
mode. This mode must be used when you road the
machine. Use circle steer mode for normal operation.
When the machine is in circle steer mode, the front
wheels and the rear wheels turn in opposite directions.
This allows the machine to make tighter turns. When
the machine is in crab steer mode, the front wheels
and the rear wheels turn in the same direction. When
you select the crab steer mode, the machine will move
forward and the machine will move to one side.
Alternatively, the machine will move backward and the
machine will move to one side. This allows the machine
to operate in confined locations.
Checking or Synchronizing the Wheels
Machines with Steer Sensors
1. In a static position, select circle steer mode and
ensure that the circle steer mode indicator is
constantly illuminated. Adjust the steering wheel, as
required.
2. Select two-wheel steer mode and ensure that the
two-wheel steer mode indicator is constantly
illuminated. Adjust the steering wheel, as required.
3. Select your desired steer mode and use as normal.
Machines without Steer Sensors
1. In a static position, select circle steer mode. By
using your eyes, align the rear wheels to a straight
position.
2. Select two-wheel steer mode. By using your eyes,
align the front wheels to a straight position.
3. Select your desired steer mode and use as normal.
Note: It is important not to try to turn the steering
wheel once the ignition is turned to the OFF position.
This can lead to steer misalignment, which will result in
reduced accuracy of the steering system.
Steering Arrangement Without Self-Aligning
Rear Steering
When you change the steering mode, it is possible for
the steering to go out of synchronization. This will
happen under the following conditions:
• The rear wheels are not positioned straight when
you change from circle steer mode to two-wheel
steer mode.
• The rear wheels are not positioned straight when
you change from crab steer mode to two-wheel
steer mode.
• All four wheels are not positioned straight when you
change from circle steer mode to crab steer mode.
• All four wheels are not positioned straight when you
change from crab steer mode to circle steer mode.
Use the following procedure in order to synchronize the
steering:
1. 1. Stop the machine while either crab steer mode or
circle steer mode is selected.
Illustration 66 g00603627