2122.6-0000010 OM
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2.15.2 Indication of the engaged gear and control for GB gear switching mode
In the initial position, when operator shifts the starter and instruments switch to the
position “I” – instruments on”, a moderate mode for gear switching is set by default – two
upper segments burn on indicator 9 (figure 2.15.1).
Pressing option button for gear switching mode 32 by method of circular search, it is
possible to set easy, heavy or return to moderate mode of gear switching depending on
the type of work carried out. An easy mode can be used when operating the tractor with
minimal load, for example on transport when moving with empty trailer, and a heavy mode
- when carrying out energy-consuming work with maximal load. If one upper (smaller)
segment burns on indicator 9 – an easy mode is set; if two upper segments burn – a mod-
erate mode is set, if all three segments burn – a heavy mode for gear switching is set.
Also, when operator shifts the starter and instruments switch to the position “I” – in-
struments on” – all gears are disengaged. Annunciator for gear “0” 33 (figure 2.15.5) lights
up on CECS front panel, and number “0” lights up on digital indicator 7.
Then, when switching gears in the operation process, digital indicator 7 displays the GB
gear number, set with the help of a joystick, and annunciator 6 displays the gear on which the
tractor is moving at the moment.
So, if during tractor movement on the first gear, a fourth gear is successively set
with the joystick, then digital indicator 7 immediately displays number “4” and annunciators
of the engaged gear 6 light up successively (first lower, then the rest, last – upper) in ac-
cordance with actuation of the corresponding pressure sensors.
At normal operation mode, indicator 7 indicates the number of chosen gear, and the
corresponding annunciator 6 constantly burns which confirms actuation by pressure.
Digital indicator 7 also indicates switching on of GB “partial braking” mode, as speci-
fied in subsection 2.14.2 “Switching of GB ranges”.
2.15.3 Rear power take-off shaft control
Rear power take-off shaft control is carried out by means of buttons 5 and 35 (figure
2.15.1). Indication of RPTO operation is carried out by means of annunciators 4, 34, 36
and integrated indicator 15 (figure 2.1.1).
Note – Operation of integrated indicator in the display mode of RPTO revolutions is
specified in subsection 2.8.2 “Assignment and operation principle of integrated indicator
gauges”.
In the initial position, when operator shifts the starter and instruments switch to the
position “I” – instruments on”, RPTO disengaged state is set by default – indicator 36 (fig-
ure 2.13.5) burns which confirms RPTO disengaged state.
To engage RPTO, it is required to press button 5. Immediately after pressing button
5, annunciator 4 gets actuated which informs the start of RPTO spinning up. Then, after
some time when RPTO gets to the normal operation mode, annunciator for RPTO 34 en-
gaged state lights up additionally.
To disengage RPTO, it is required to press button 30. By doing so, annunciators 4
and 34 go out and annunciator for RPTO switching off 36 lights up which confirms that
RPTO is in the disengaged state.
CECS allows RPTO repeated switching on only 30 sec after its switching off.
ATTENTION: FOR REAR POWER TAKE-OFF EMERGENCY SWITCHING OFF, IT
IS REQUIRED TO PRESS BUTTON 1 (FIGURE 2.15.1)!
Note – Additional information on operating rules with RPTO are specified in subsec-
tion 2.16 “Additional information on rear power take-off control” and subsection 3.2.7 “PTO
use”.
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