2122.6-0000010 OM
52
ATTENTION: DURING TRACTOR OPERATION AT BAD COUPLING CONDITIONS WITH
REAR WHEELS SKIDDING, INCLUDING WHILE TURNING, USE ONLY FORCED FDA SWITCH-
ING ON TO PROVIDE SMOOTH FDA SWITCHING ON, FOR WHICH DO THE FOLLOWING:
- STOP THE TRACTOR, DEPRESSING THE CLUTCH COUPLING PEDAL;
- SWITCH ON FDA IN THE MODE “FORCED FDA DRIVE SWITCHING ON”, HOLDING
BUTTON 30 IN PRESSED POSITION;
- RELEASE THE CLUTCH COUPLING PEDAL SMOOTHLY.
ATTENTION: AUTOMATIC FDA DRIVE SWITCHING ON TAKES PLACE WHEN DE-
PRESSING THE INTERLOCKED BRAKE PEDALS, REGARDLESS OF THE MODE SET (IN-
CLUDING IN THE MODE “FDAD OFF”)!
ATTENTION: DURING OPERATION ON ROADS WITH HARD SURGACE, IT IS RE-
QUIRED TO SWITCH OFF FDA DRIVE TO AVOID INCREASED WEAR OF FRONT WHEELS
TIRES!
ATTENTION: VIOLATION OF RULES FOR USING FDA DRIVE CONTROL MODES
CAN LEAD TO BREAKAGE IN DOUBLE FDA HINGE JOINTS AND OTHER TRANSMISSION
PARTS!
TRACTOR OPERATION WITH FDA DRIVE SWITCHED ON AT A SPEED OVER 13
KM/H IS FORBIDDEN!
2.15.6 Rear axle differential lock control
Rear axle differential lock (RADL) control is carried out by means of buttons 14 and
28 (figure 2.15.1). Indication of RADL operation is carried out with annunciators 13, 27, 29.
In the initial state, when operator shifts the starter and instruments switch to the po-
sition “I” – instruments on“, RADL disengaged state is set by default.
In order to avoid increased wear of rear wheels tires and rear axle differential lock,
use the mode “RADL off” on the transport when moving on roads with hard surface at a
speed over 10 km/h.
When pressing button 14 “AUTO”
with the position of guide wheels corresponding to
straight-forward movement, RADL gets actuated in an automatic mode. Simultaneously, an-
nunciators 13 and 27 light up.
RADL disengagement takes place automatically when guide wheels turn for the an-
gle over 13° or at a speed over 16 km/h, as well as when pressing either or both brake
pedals. At speed reduction less than 13 km/h, RADL shall switch on automatically.
Annunciator for switching on RADL automatic mode 13 shall constantly burn up to
the moment of switching off this mode, and annunciator for RADL engaged state 27 shall
burn only during RADL operation.
Disengagement of mode “RADL automatic control” is carried out by repeated pressing
button 14 “AUTO” or by pressing and releasing button for switching on RADL forced mode 28.
By doing so, annunciators 13 and 27 go out.
In case
forced short-time RAD lock is required, regardless of tractor speed and front
wheels turning angle, press button 28 and hold it in this position. Rear axle differential lock
remains switched on for the time of holding button 28 in pressed position. Simultaneously, an-
nunciators 27 and 29 light up. When button 28 is released, return to RADL initial (disengaged)
position takes place and annunciators 27, 29 go out.
To pass from the automatic mode of RADL to the forced mode, it is enough just to press
button 28 and hold it in this position.
ATTENTION: AUTOMATIC RADL SWITCHING OFF TAKES PLACE WHEN DE-
PRESSING EITHER OR BOTH BRAKE PEDALS, REGARDLESS OF THE MODE SET!
TRACTOR OPERATION WITH REAR AXLE DIFFERENTIAL LOCK SWITCHED ON AT
A SPEED OVER 13 KM/H IS FORBIDDEN!
TRACTOR OPERATION ON THE TRANSPORT ON ROADS WITH HARD SURFACE
WITH CONSTANTLY SWITCHED ON REAR AXLE DIFFERENTIAL LOCK IS FORBIDDEN!
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