Resetting Driving Speed Parameters - Valtra 6000 Workshop Manual

37. Autocontrol 5 / 5.2
G. Resetting prefilling time of shuttle
clutches, AC 5 and 5.2
See also working orders in instr. 370/24D)
Note! This resetting must always be done before the ca-
libration of the initial pressures. Adjust the initial pressure
index of the F --- and R ---clutches to smaller than ---3 (see
instr. D) before resetting the prefilling times.
Note! The resetting is done by changing the prefilling
index. As a procedure this is done like the initial pressure
calibration by stepping with DPS push buttons and by con-
firming with the DPS pre ---selection button.
NOTE! If the shuttle engagement causes so called "double
jerk" in the beginning of the engagement and the function
has a great delay, so:
--- decreasing the index reduces the jerk and increases the
delay
--- increasing the index increases the jerk and reduces the
delay.
Testdrive the tractor and carry out, if needed, the resetting
procedure (note down the original index value). Test---run
the tractor after resetting.
1. Check that the transmission oil temperature is
+30˚C...+60˚C. Activate the setting mode (see page
340/14).
2. Step with the DPS push buttons (in the speed gear lever
knob) and select no 3 in the setting mode menu and con-
firm this selection with the DPS pre ---programming button.
FIII=set-
ting mo-
de sym-
bol
3=Resetting prefil-
ling time of F
clutch
4= R ---clutch.
Index digit
3. When this mode has been selected and confirmed ,
number 3 is shown (not blinking) in the left and the index
digit is blinking in the right. The factory setting is 0.
4. Change the prefilling index (when it is blinking) one step
at a time with the DPS push buttons and confirm it with the
preprogramming button (blinking stops). After this, test the
engagement of the shuttle many times. Change the index
when necessary.
5. Carry out this same also for the R ---clutch. Now number 4
is selected in the setting mode menu.
Note! If the index for the F --- or R ---clutches must be over
+4 or smaller than ---4, it is possible, that the clutch in
question is worn ---out or the clutch piston or valve is stuck.
1. 10. 1999
1. 8. 2000
H. Resetting driving speed parameters
AC 5 and 5.2
Note! Driving speed parameter means the pulse parameter
(pulses/m) of sensor F2 (gearbox speed sensor).
By changing this parameter value the driving speed display
can be adjusted so that it shows the correct value accor-
ding to the tractor tyres and transmission type. This proce-
dure is made in the factory for all new tractors. If tyres of
different dimensions are fitted later on the tractor, the para-
meters can be reset according to this instruction.
1. Activate the test mode according to instr. A on page
370/14 (if not activated eralier).
2. Select symbol A (blinking) in the test mode menu by
stepping with DPS push buttons (in the speed gear lever
knob), and confirm the selection by pushing the DPS pre-
programming button, at which time symbol A stops blin-
king and the present parameter value is visible (blinking) in
the three RH side segments.
3. The blinking parameter value can be changed by using
the DPS push buttons in the speed gear lever knob.
Note! The parameters according to the tyres and transmis-
sion types are the same as for AD ---instrument, see table on
page 331/6.
4. When the desired parameter value is in the display, it is
confirmed by pushing the DPS preprogramming button.
5. If the confirmation succeeds, the parameter value in
question remains in the display without blinking.
Note! Escape from the setting mode by switching off the
current with the ignition switch.
476
Model Code
370
6250-- 8950
FIII=setting
mode symbol
A= symbol for dri-
ving speed para-
meter setting.
Value of driving
speed parame-
ter.
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