Automatic Calibrations Of Shuttle, Dps And Pto Clutches - Valtra 6000 Workshop Manual

37. Autocontrol 5.2 (K41107---)
C. Automatic calibrations of shuttle, DPS
and PTO clutches
(Shuttle: setting pre ---filling and in-
itial pressure indexes.
DPS and PTO: --- only setting of initial pressure indexes)
Note! The automatic calibrations only in AC 5.2. These
clutches can also be calibrated manually:
--- manual calibration of shuttle and DPS clutches, see page
370/24H
--- manual calibration of PTO clutch, see page 371/12A.
In the automatic calibration the whole control line is cali-
brated:
--- Multi ---disc clutch
--- Proportional valve
--- Control unit output
Note! An implement or trailer must not be connected to the
tractor during the automatic calibration.
Before calibration the following points must be observed:
1. The clutch pedal must be calibrated first.
2. Warm the engine up to a normal running temperature and
warm the gearbox oil to an operating temperature
(+30...+60˚ C). Check the temperature in the test mode FII,
point A2 (Agrodata --- instrumentation panel shows only tem-
perature over +40˚C).
Note! If the tractor has a turbine clutch (HiTrol) , check the Stall
revs before the calibrations (page 411/7).
3. Drive the tractor on a level ground, preferably on asphalt,
on tarmac or on hard gravel, where there is space forwards
and backwards for some meters (during calibration the tractor
moves some centimeters forwards and backwards and stops
itself). The calibration fails if done on a field. The calibration
must not be done indoors or on slanting ground.
4. Disengage the differential lock, 4WD and PTO.
5. Check that the working hydraulics are in the free circulation
phase (levers to the neutral position N). Turn the front wheel
straight ahead.
6. If the PTO clutch is to be calibrated, move the PTO lever to
the front position. The PTO calibration is done without a load
on the PTO shaft.
Caution! If the PTO clutch is calibrated, the PTO shaft starts
to run automatically during the calibration procedure and also
stops by itself.
7. Turn the current off and on in order to obtain the test mode.
8. Move the shuttle lever to the neutral position N. Remove
possible pre ---programming of the DPS speeds by pressing
the pre ---programming button more than 2 seconds when the
shuttle lever is in the neutral position N.
9. Turn the current off for the starting of the automatic calibra-
tion.
10. Activate the setting mode FIII, see page 370/14.
Confirm FIII, confirm A, then " CAL " begins to blink and the
start phase of the setting mode appears.
Model
1. 8. 2000
1. 9. 2002
167
Code Page
371 11
6250-- 8950
START