Differences Between Ac Ii And Ac; Delta Powershift Control System; Sound Signals; Control Of Transmission - Valtra 6000 Workshop Manual

31. Autocontrol 2.1

1. Differences between AC II and AC

2.1
Autocontroll 2.1 replaces under code 311 shown Autocontrol
II system from tractor serial number 668103 incl.
A. Delta Powershift control system
The order of the two push buttons on the gear lever knob have
been changed. On AC 2.1 system the front button changes up
and the rear button changes down.
The AC 2.1 system control unit is placed in connection with the
circuit card of the Autocontrtol power lift on the driver's right
and it is connected to the tractor electrical system with 18---pin
connector.
Delta Powershift pilot lights have been placed in the dash-
board in connection with the other warning lights. The lights
have symbols I, II and III and they light individually when dif-
ferent ratios are engaged (I=lowest ratio, II=intermediate
ratio and III=highest ratio). The pilot lights are green.
B. Sound signals
The new circuit card (control unit) has a buzzer, which func-
tions as follows:
a) If the engine is stopped (oil pressure drops), and the hand
brake is not applied, the buzzer alarms continuously about 2
minutes, as if the driver does not apply the hand brake (also
on AC II).
b) When the engine is running (oil pressure up) and the hand
brake is engaged, the buzzer gives a sound signal at intervals
of 2 seconds, until the hand brake is released.
c) If the ignition is switched off, and the headlights are on, the
buzzer sounds, until the lights are switched off.
C. Control of transmission
Control of 4WD, differential lock and PTO happens as on AC
II system, see pages 311/1 ---2 and pages 311/7 ---10.
15. 4. 1995
1. 9. 2002
D. Power lift
Compared with AC II system, the power lift has one rocker
switch more. This forced ---lowering switch is spring returned
and is fitted on the RH side of the position control potentio-
meter. The switch is shown under code 320.
2. Other optional or alternative
equipment
A. Control stop
In connection with the optional electric engine stop is now an
automatic control stop as a standard equipment. This system
stops the engine automatically, if the instrument panel stop ---
light starts to flash. The control stop can be fitted on tractors
with effect from serial number 662343 (AC II).
The control stop stops the engine automatically, if:
--- engine temperature rises too much
--- gearbox temperature rises too much
--- engine oil pressure falls too far
--- gearbox oil temperature falls too far
The control stop is switched on with a switch on the instrument
panel.
Note! The control stop must be switched on just after engine
start, since the engine does not start, if the control stop is
switched on.
Note! The safety stop is meant to be used just when the tractor
is driving an implement without control from tractor. The safety
stop must not be used when driving.
e.g. when driving the tractor gearbox oil pressure can fall tem-
porarily too low, then control stop relay connects and the en-
gine stops.
B. Agrodata---instrument
Agrodata ---instrument is presented under code 331.
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Model Code Page
6000-- 8750 312 1