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Valtra 6550 - Differential Lock; Front Wheel Drive

Valtra 6550
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Autocontrol II controls the transmission as follows:
1. Differential lock
The lock is controlled with a three ---position rocking
switch on the driver’s right.
A. Rocking switch front
edge depressed.
B. Rocking switch in the
middle position
C. Rocking switch rear
edge depressed (spring
returned)
--- the differential lock is disengaged
--- the lock is always engaged
except when brake pedal/pedals
are depressed or when the power
lift is in the transport position (sig-
nal light illuminates however). The
lock engages when the brake
pedal/pedals are released or
when the lift/lower switch is in the
lowering position or in the middle
position.
--- When the switch rear edge is
depressed, the lock is engaged
butitdisengageswhenthebrake
pedal/pedals are depressed. After
that the lock re--- engages only if it
is done with the switch.
2. Front wheel drive
--- The 4WD is disengaged except when braking with
both brake pedals. If it is used only one brake pedal,
the 4WD does nor engage.
A. The switch in the front position B. The switch in the rear position
Front wheel drive is engaged and disengaged with a
switch in the range gear lever knob.
--- The4WDisalwaysengaged
239
Model Code Page
31. Autocontrol II
1. 8. 1998
6000--8750 311 1
1. 1. 1994
From the beginning of 1994 (662343 ---) all 6000---8400 trac-
tors (except E --- models) have Autocontrol II as standard
equipment. Autocontrol II includes new push buttons of the
Delta Powershift (if fitted) (compared to the rocking switch as
showninsection44).
In addition, Autocontrol II has a three--- position lift/lower
switch for the hydraulic power lift. Autocontrol II also controls
the differential lock, 4WD and PTO.
Important! From serial no. 668103 incl., Autocontrol 2.1
replaces Autocontrol II. The differences are described under
code 312.

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