Differential Control - Shibaura ST450 Operator's Manual

DIFFERENTIAL CONTROL

The differential lock pedal (1) in Figure 2-33, is
located on the left-hand foot platform. The
differential lock is used to obtain additional
traction in wet or loose soil. When the differential
lock pedal is depressed, both final drive pinion
gear shafts are locked together, preventing one
wheel from rotating independently of the other.
Whenever one wheel begins to slip in wet or
loose soil, use the lock to obtain additional
traction from the opposite wheel.
WARNING
Steering the tractor is very difficult with the
differential locked.
Do not engage the differential lock when
driving the tractor on the highway, when
ground speed is above 8 km/h, or when
turning the tractor. If the lock is engaged
when turning, a loss of steering control will
result.
To operate the differential lock, depress and hold
the pedal down until the lock is positively
engaged. It is best to engage the lock while the
wheels are turning slowly to minimize shock
loads to the driveline. If a wheel spins at high
speed, such as on ice, reduce engine speed to
idle before engaging the lock or damage may
result. Release the pedal to disengage the
differential lock.
NOTE: In some instances, the lock may remain
engaged after the pedal is released. This can
occur if one rear wheel is turning at a faster
speed than the other. The lock can be
disengaged in one of two ways if this occurs:
Decrease the drawbar pull by raising or
disengaging the implement so that neither
wheel tends to slip.
--OR--
Rapidly apply and release a light braking load
to the slipping rear wheel.
SECTION 2 – OPERATION
2-17
1
Figure 2-33