Description Of Iep Performance Check; Steering; General Information; Reverse Valve Switch - Belarus 3522.5 Operator's Manual

2.9.2 Description of IEP performance check

With each power-up the IEP carries out check of annunciators performance. Here-
with all LED-annunciators and indicators are on for about two seconds and the acoustic
signal goes off. Then the LED-annunciators and the acoustic signal turn into the operation
mode – only the annunciator 5 or 8 (depending on the selected fuel delivery pedal) is on,
the acoustic signal goes out.
Note: The IEP without check of functioning of LED-annunciators 5, 8, 12, 15 as well
annunciators indicating flow restriction of the electohydraulic distributor EHS can be installed
in "BELARUS-3522.5" tractors.

2.10 Steering

2.10.1 General information

"BELARUS-3522.5" tractors are equipped with hydrostatic steering control (HSC).
When the engine is stopped the HSC feed pump, driven by the engine crankshaft, does
not feed the hydraulic system of the HSC and it is automatically shifted to a manual mode,
which requires application of great effort on the steering wheel in order to turn the tractor.

2.10.2 Reverse valve switch

1 – handle to control the reverse valve; 2 – electrohydraulic distributor of transmis-
sion hydraulic system.
In HSC hydraulic system of "BELARUS-3522.5" tractors a reverse valve is installed
which switches delivery of operating fluid from the feed pump to the dosing pump of forward
motion or to the dosing pump of reverse motion.
The reverse valve is mounted to the left under the hood at driver's cab on the left
post of hood fixation bracket.
The reverse valve is controlled by shifting the handle 1 (figure 2.10.1) into one of
two positions until it gets fixed in one of them:
- to control the tractor during movement in the "forward motion" mode the valve con-
trol handle 1 shall be moved up until fixed;
- to control the tractor during movement in the "reverse motion" mode the valve con-
trol handle 1 shall be moved down until fixed.
Note – Figure 2.10.1 indicates the position of the handle to control the reverse valve
in the mode of "reverse motion".
ATTENTION: BEFORE STARTING THE ENGINE IT IS NECESSARY TO MAKE
SURE THAT THE HANDLE CONTROLLING THE REVERSE VALVE IS SET INTO POSI-
TION REQUIRED FOR THE DESIRED MODE OF TRACTOR MOVEMENT!
ATTENTION: TO PROVIDE FOR OPERATION OF STEERING CONTROL IN A
DESIRED DIRECTION OF TRACTOR MOVEMENT THE REVERSE VALVE SHALL BE
SWITCHED ONLY WITH THE ENGINE STOPPED IN ORDER TO PREVENT DAMAGE
TO HSC FEED PUMP OR RUPTURE OF HIGH PRESSURE HOSES AND OIL PIPE-
LINES!
Figure 2.10.1 – reverse valve switch
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