2122.6-0000010 OM
190
5.4.4 General maintenance services
5.4.4.1 General instructions
Carry out maintenance service operations listed in present subsection 5.4.4 as may
be necessary (i.
е
. according to corresponding pressure or dirtiness sensor indications).
5.4.4.2 Operation 79. Adjustment of valve setting operating pressure for
transmission hydraulics
The valve setting operating pressure for the transmission hydraulics is located on
duplex filter 7 (figure 5.4.2).
The valve setting operating pressure for the transmission hydraulics 3 (figure
5.4.32) maintains oil pressure in the transmission hydraulics within 1.1 to 1.2 MPa at rated
speed of the engine. If the pressure is permanently below 1.1 MPa or above 1.2 MPa with
the tractor warmed up and with the rated speed of the engine, then adjust valve 3 by
changing the number of washers 4 between spring 2 and valve setting the operating pres-
sure for transmission hydraulics 3. To do this it is necessary to screw valve 3 out of hous-
ing 1.
To increase the pressure it is required to increase the amount of washers, to reduce
the pressure it is required to reduce the amount of washers.
ATTENTION: THE TOTAL THICKNESS OF ADJUSTING WASHERS SHALL NOT
INCREASE 7 MM PER VALVE!
1 – duplex filter body; 2 – spring; 3 – valve setting operating pressure for transmis-
sion hydraulics; 4 – adjusting washers; 5 – lubrication valve; 6 – annunciator valve.
Figure 5.4.32
–
Adjustment of valve setting operating pressure for transmission hydraulics
ATTENTION: IF PRESSURE GOES BELOW 0.8 MPA, STOP THE TRACTOR AND
ELIMINATE THE FAILURE IN TRANSMISSION HYDRAULICS!
5.4.4.3 Operation 80. Change of duplex filter filtration package for
transmission hydraulics and rinse of mesh filter
The filtration package of the duplex filter for the transmission hydraulics 7 (figure
5.4.2) shall be changed as impurity annunciator 20 (figure 2.15.1) located on CECS goes
on.
ATTENTION: IT IS NECESSARY TO REPLACE TWO FILTRATION PACKAGES
SIMULTANEOUSLY!
https://tractormanualz.com/