Buhler 2180 - Manual (Page 106)

SECTION 2 - OPERATION
2-60
DIFFERENTIAL LOCK
INTRODUCTION
A self-holding differential lock is installed in the rear
axle to lock the rear wheels together in conditions
where wheel slip is encountered.
Units equipped with Traction Control System (TCS)
traction management four wheel drive, also come
with a fully locking electro-hydraulicly engaged front
axle differential lock.
ENGAGING AND DISENGAGING
DIFFERENTIAL LOCK
To engage the differential lock depress and release
the front part of the switch,1. The switch will return to
the center position, but the differential lock will be
activated.
NOTE: The FAST RAISE/WORK switch must be in
the “WORK” position.
The switch indicator light will illuminate to indicate the
differential lock is engaged.
NOTE: Diff-lock will disengage if one brake is applied
or when the 3-point hitch FAST RAISE/WORK switch
is in the fast raise position or if the unit is operated
above 16 kph (10 MPH ). TCS will disengage at 10
kph (6 MPH) or below at turn angles of 20 degrees or
higher or between 10-15 kph (6-9 MPH) at turn
angles of 10 degrees or higher. In manual operation
mode as described above, the differential lock or
TCS will not reengage automatically and must be
reengaged manually.
To turn off the differential lock, depress then release
the rear part of the switch or apply either of the foot
brakes.
ENGAGING AND DISENGAGING THE
DIFFERENTIAL LOCK IN EITHER THE
AUTOMATIC MODE OR TRACTION
CONTROL SYSTEM (TCS) MODE
To engage the differential lock in either the Automatic
mode or TCS mode press and release the front of the
lock switch twice within one second.
The green differential lock lamp in the instrument
panel will illuminate to indicate the differential lock is
on in either Automatic mode or TCS mode.
Auto differential lock will disengage when one brake
is applied or when the 3-point hitch FAST
RAISE/WORK switch is in the fast raise position.
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94
Auto differential lock will reengage when the brake is
released or when the FAST RAISE/WORK switch is
returned to the work position.
If equipped with TCS, the front and rear differential
locks will disengage and reengage the same as in
AUTO mode as well as with turn angles. TCS will
disengage at 10 kph (6 MPH) or below at turn angles
of 20 degrees or higher and reengage at angles less
than 20 degrees, or between 10-15 kph (6-9 MPH) at
turn angles of 10 degrees or higher and reengage at
angles less than 10 degrees.
The indicator light on the instrument panel will go out
when auto differential lock or TCS has disengaged.
To turn off auto differential lock or TCS, depress the
rear part of the switch.
NOTE: Auto differential lock or TCS will automatical-
ly disengage if the unit is operated above 16 kph (10
MPH ).
WARNING
Never use the differential lock at speeds above 8
kph (5 mph) or when turning the tractor. When
engaged, the differential lock will prevent the
tractor from turning.
IMPORTANT: If a rear wheel spins at high speed,
reduce engine speed before engaging the differential
lock to avoid shock loads to the driveline.