2022.3-0000010 OM 3.8.3 Service brake adjustment of “BELARUS-1822.3/2022.3”
1, 2 – main cylinder; 3 – fork; 4 – nut; 5 – bolt; 6 – pin; 7 – lock-nut; 8, 9 – pedal; 10 – pipeline from main cylinder to working cylinder Figure 3.8.3 – Adjustment of pedal free play and brake pedal position To adjust the service brakes of the tractor proceed as follows: 1. Set pads of the pedals 8, 9 (figure 3.8.3) in one plane with a help of the stop adjusting bolts 5, screwing them in to 20 3 mm. Lock the nuts 4. 2. Adjust free play of the pedals 8, 9 within 4 … 8 mm. To do this, proceed as follows: - unsplint and remove the pins 6 and disconnect the forks 3 from the stems of the pedals 8, 9; - turn the lock-nuts 7 off by several revolutions and by screwing the forks 3 in or out, shorten or lengthen the hydraulic cylinders 1, 2 rods, to meet the required free play of the pedals; - lock the nuts 7, fit the pins 6 and cotter-pin them. The pedal free play of 4…8 mm corresponds to 0.6...1.3 mm clearance between the piston and the pusher in each main cylinder. - the pedals should not be in contact with whatever components of the cab. The height position of the pedal pads can be adjusted, if required, with the bolts 5 and by changing the length of the hydraulic cylinder rods, providing the pedal free play within 4…8 mm. 3. Set the length of working cylinder 8 (figure 3.8.4) of the left brake to 205… 213 mm, if measured from the cylinder end face to the axis of the pin 4 which connects the lever 5 with the fork 3, with the cylinder piston fully drawn in. The pin 4 stroke should be in this case within the limits of 10 …12 mm when applying force from 350 to 400 N on 60 mm arm to the lever 5. Carry out the adjustment by means of a fork 3, having performed the following operations: - disconnect the link 7 of the parking brake actuator from the lever 5; - loosen the lock-nut 2 on the cylinder rod by several turns; - turning the rod 1 of the working cylinder, adjust the cylinder length and pin stroke of the working cylinder fork within the necessary limits; - tighten the lock-nut 2, attach rod 7 of parking brake actuator. 104
