Check And Adjustment Of The Double-Line Brake Valve Actuator Of The Pneumatic System - Belarus 1822.3 Operator's Manual

3.9.4.2.3 Check and adjustment of the double-line brake valve actuator of the
pneumatic system
1 – brake valve; 2 – rod; 3 – lock-nut; 4 – fork; 5 - pin; 6 – lever.
Figure 3.9.5 – Adjustment of the double-line brake valve of the pneumatic system
Check and, if necessary, adjustment of the brake valve actuator of double-line
pneumatic drive shall be carried out in the following order:
1. Connect a pressure gage with scale division of not less than 1 MPa to the con-
necting head (with yellow cover) of the tractor pneumatic drive;
2. Start the engine and fill the tank with air to reach pressure of 0.77... 0.8 MPa as
per the pneumatic system air pressure indicator, located on the dashboard. Stop the en-
gine;
3. Air pressure according to the pressure gage connected to the connecting head
(with yellow cover) of the control line shall equal to zero. Shift the interconnected brake
pedals to the max. travel. The pressure shall rise to 0.65...0.8 MPa. Release the brake
pedals. Engage the parking brake, moving its handle to the max. value. The pressure shall
rise to 0.65...0.8 MPa. If the pressure per the pressure gage, connected to the connecting
head of the control line does not correspond to the stated above, perform the following op-
erations:
- check length of the rod 2 assembly (figure 3.9.5);
- the rod length shall ensure its free (without tension) connection to the lever 6 by
means of the pin 5. If it is necessary, adjust its length by turning the fork 4. Lock the fork 4
with the lock-nut 3.
4. If air pressure according to the pressure gage, connected to the connecting head,
has not reached the required value, replace the brake valve 1.
ATTENTION: IF THE BRAKE VALVE 1 (FIGURE 3.9.5) IS IN GOOD ORDER AND
ITS ACTUATOR 1 IS ADJUSTED CORRECTLY, THE PRESSURE ACCORDING TO THE
PRESSURE GAGE, CONNECTED TO THE CONNECTING HEAD (WITH THE YELLOW
COVER) OF THE CONTROL LINE, SHALL RISE FROM ZERO TO 0.65...0.8 MPA AS
THE INTERCONNECTED BRAKE PEDALS ARE FULLY DEPRESSED OR THE PARK-
ING BRAKE LEVER DISPLACED TO THE MAX. VALUE!
116
https://tractormanualz.com/
2022.3-0000010 OM