Possible Failures In The Electrical Equipment And Instructions For Their Troubleshooting - Belarus 1523.5 Operator's Manual

6.14 Possible failures in the electrical equipment and instructions for their trouble-
shooting
6.14.1 General information
Tractor "BELARUS-1523.5" electrical equipment includes electrical elements (switches,
relays, electrical engines, tools and instruments, lamps, headlights, fuses, relay interrupt-
ers, sensors, etc.) as well as wires and electrical connections which serve for coupling the
element with power supply and the body weight.
Before starting operation on troubleshooting of any of electrical circuits, it is required to
study carefully the electrical diagram to familiarize yourself with the functional specifica-
tions of this device. Search for a failure can be limited by gradual detection and exclusion
of properly functioning elements of the same loop. In case several electrical elements fail
to operate properly at the same time, the most probable reason for a failure can be burn-
ing-out of the corresponding fuse or the absence of "load" (different electrical elements in
many cases can lock at one fuse or at the same terminal of the "load").
Electrical equipment failures can be explained by simple reasons like terminals corrosion,
faulty fuses, burning of the insert or a switching relay defect. Check visually the condition
of all fuses, wires and electrical connections of the circuit before starting the specific check
of the elements failures.
In case of using test instruments for detecting a failure, plan carefully in accordance with
the applied electrical diagram the succession of the instrument connection to the circuit to
detect the failure most effectively. The main test instruments include a tester (multimeter)
of electrical circuits, a voltmeter (a 12volt-pilot lamp can be applied with a set of connec-
tion cables), an indicator of the circuit segment conductivity (a tester) which includes a
lamp, electrical power supply and a set of connection cables.
Electrical circuit troubleshooting can not be regarded as a complicated task if taking into
consideration the fact that current is supplied to all electrical elements (lamp, electrical en-
gine, etc.) from AB by wires through switches, relays, fuses, inserts, and then goes back to
AB through tractor "weight". Any problems related to the electrical equipment failure can
be caused only by electrical current supply termination from AB or by electrical current re-
turn to AB.
Note – The information provided in subsection 6.14 "Possible failures in the electrical
equipment and instructions for their troubleshooting" shall be used for eliminating ECS
failures of rear axle differential lock, front driving axle drive, front power take-off and par-
tially for eliminating failures in the engine electronic control system.
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