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Valtra 6550 - Page 537

Valtra 6550
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152
Model Code Page
37. Autocontrol 5 / 5.2
1. 8. 2000
370 24J
6250--8950
1. 9. 2002
Function of PTO
(use implement, if needed, as a load):
--- Select with the lever PTO speed 1 (front positio n of the
lever), start the PTO, PTO symbol must light up in the dis-
play, keep engine revs at about 1800 rpm for about 30 sec-
onds.
Note the changed PTO starting custom in program version
42--- (starting at least 3 seconds). Also check possible rear
push buttons for PTO (option)
--- Try the same with PTO speed 2 (lever in the rear position)
NOTE! In AC 5.2 there are as option the PTO start/stop
buttons on the rear mudguards, which have 3 sec. e ngag-
ing delay.
4WD automatics (AC 5.2 only)
The automatics are activated, if the value of index U (in the
setting mode menu) is 1 (=factory value).
-- turn the 4WD rocker switch into OFF position (left side
down). When starting driving and when changing driving
direction the 4WD must be engaged for a while. The 4WD
must be engaged also when using HiShift buttons, if the
driving speed is below 10 km/h. The 4WD must be disen-
gaged at least when the driving speed exceeds 10 km/h.
Automatic traction control (AC 5.2 only)
--- let the engine idle and switch on the AutoTraction control
with the “Nauto” switch (right edge down).
Symbol N starts to flash in the display. Engage gear H1 and
switch on the driving direction.
Raise the engine revs with the gas pedal over 1020 r/min, at
which time the tractor must start to move softly (do not use
theclutchpedal).Thetractionmustbedisengaged,when
the brakes are depressed while the driving speed is below
10 km/h, the traction must also be disengaged, if the gas
pedal is released and the engine speed lowers under 970
r/min.
The traction control is switched off by stopping the tractor
and by moving the shuttle lever into position P.
Checking fault code memory (AC 5.2only)
Check after the test---run if there are fault codes in the
memory . If so, repair the faults and empty the fault code
memory by pushing the DPS pre---programming button
over 4 seconds (see page 371/6)

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