KIROVETS K-744R1, K-744R2, K-744R3, K-744R4 tractors
162
Fault
Remedy
diagram in the appendix).
The pressure regulator often operates
with the pneumatic system being filled.
Air leak through connections of the pneumatic
system.
Eliminate the leak by tightening the connections
(determine the leak area “by ear” or “by touch”).
Air leak through one of the pneumatic sets.
Replace the set.
Ineffective braking or absence of braking
with the brake pedal being fully shifted.
The rod stroke in the brake chambers is not
adjusted.
Perform adjustment.
The brake valve is faulty.
Connect manometers to the valves of reference
outlet of the upper and lower sections of the
brake valve. If at the full stroke of the brake
valve lever the pressure according to the
manometer readings is less than on the gauge in
the instrument panel (Fig. 1, 2, 3, 4), replace the
brake valve.
Air leak from brake chambers.
Replace the chamber membrane.
Faults of electrical equipment
The level of electrolyte decreases very
fast:
– leak of electrolyte from the battery jars; Repair or replace the storage battery.
– the voltage regulator maintains a high
level of voltage in the electrical system of
the tractor.
Replace the voltage regulator.
The turn indicator lights are faulty:
– the fuse has burnt;
Eliminate a short-circuit in the wiring, after which
replace the fuse.
– a faulty contact in the terminal
connections or a wire break;
Restore the contact in the terminal connections,
check the serviceability of electrical wiring.
– the disconnecting relay of the turn
indicator is faulty;
Replace the disconnecting relay.
– the light lamps have burnt out.
Replace the lamps.
Rattling noise of the sound signal:
– the fasteners of signal connection, cover
or coil have loosened;
Tighten the fasteners.
– cracks in the membrane.
Replace the signal.
The sound signal does not activate:
– the fuse has burnt;
– faulty contact in the signal button.
Eliminate a short-circuit in the wiring, after which
replace the fuse.
Restore the contact.
The monitoring and measuring instruments
do not provide readings or provide incorrect
readings:
– the fuse has burnt in the instrument
panel;
– faulty contact in the gauge – sensor
circuit;
– faulty gauge or sensor.
Eliminate a short-circuit in the wiring, after which
replace the fuse.
Check the reliability of wire connection to
gauges and sensors.
Replace the gauge or sensor.
The indicator lamp “Battery charging” is
alight (in the instrument panel) with the