Manual Calibration Of Pto Clutch - Valtra 6000 Workshop Manual

37. Autocontrol 5.2 (K41107---)
D. Manual calibration of PTO clutch
(=index settings)
The PTO clutch indexes can be changed if you want to af-
fect the PTO engagement phase e.g. due to excessive
delay.
Note! In the setting mode menu point 13=manual setting
of PTO clutch pre ---filling time and point 14= manual set-
ting of PTO initial pressure. The indexes can be altered be-
tween ---9...+9.
Important! The PTO indexes are set in the same way as
the shuttle indexes (e.g. 3 and 5 for F ---clutch) and they
affect similar:
--- setting pre ---filling times of the shuttle, see page 370/24D
and 370/18.
--- setting initial pressures of the shuttle, see page 370/24D
and 370/16.
First is set index 13 and then 14. The effect of the indexes
cannot be seen, if an implement is not connected to the
PTO. In addition, rotational torque of an implement affects
the PTO engagement.
Big implement (e.g. a big baler):
--- index values can be altered much, affects slowly when
observing visually.
Small implement (e.g. hay turner):
--- index change small, affects quickly when observing vis-
ually.
1. 8. 2000
1. 9. 2002
1. Connect an implement to the PTO.
2. Warm the engine to a normal running temperature and
gearbox oil to an operating temperature (+30˚...+60˚ C).
Apply parking brake.
3. Adjust engine revs to about 1200 r/min.
4. Move the PTO lever to the engaging position.
5. Check how the PTO engagement happens with the pres-
ent index values. Start/stop of the PTO can be done with
the rocker switch in the cab. Change the enagement pro-
cedure as follows:
6. Activate the setting mode (see page 330/14).
Step in the setting mode menu
with DPS push buttons.
7. First set the PTO initial pressure index to ---3 (point 14)
and then the pre ---filling index to ---6 (point 13). Increase the
pre ---filling index 13 on step at a time (---6, ---5, ---4, ---3,
---2, ---1, 0, 1, 2, 3, 4, 5, 6), and test the PTO engagement
after every index change until a clear jerk can be seen in
the beginning of the engagement. Decrease then the index
two steps.
8. Again check that the jerk disappeared in the beginning of
the engagement.
Note! If the pre ---filling index must be set below ---6 or over
+6, the PTO clutch is worn out or the piston does not move
freely.
9. Increase then the initial pressure index 14 one step at a
time (---3, ---2, ---1, 0, 1, 2, 3) and test the engagement after
every index change until the implement acceleration occurs
in the correct way during engagement.
10. The setting mode can be left by switching off current
with the ignition switch.
169
Model Code Page
371
6250-- 8950
Confirm the selection with
DPS pre ---programming but-
ton.
FIII=setting
mode symbol
Module A=AC 5
E.g. 14=set-
ting PTO
clutch initial
presure index.
Valid initial
pressure index
---3.
12