Belarus 1523, Operating Manual

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BELARUS- 1523/1523В /1523.3 /1523В.3 Troubleshooting
231
Trouble, symptoms Remedy
the release lever spring.
The solenoid valve of the engine start assisting facilities does not operate:
Poor contact in the electromagnet coil cir-
cuit.
Check the circuit and tighten the wire fas-
tening contacts.
Alternator noise:
Slipping or excessive tension of the alterna-
tor drive belt.
Remove the alternator and send it to the
workshop for repair. Adjust the tension of
the alternator drive belt.
Electric tachospeedometer
For the tachospeedometer troubleshooting see Section “Drive Controls and Instrumenta-
tion”.
System of heating and air cooling in the cab
No warm air is fed to the cab
No water circulation through the heating unit:
The tap on the cylinder block head is
closed.
Open the tap.
Ice plugs in the heater hoses. Break ice and pass hot water through the
hoses.
The heater fan does not operate. Remove the fan fault and check the electric
circuit for switching on the fan.
High humidity of the air passed to the cab:
Water leakage in the heater radiator. Eliminate the leakage or replace the radia-
tor.
Water leakage in the connections of the
heater system.
Tighten the buckles.
Pneumatic system
Pressure in the receiver builds up slowly:
Air leakage from the pneumatic system:
• The nuts of the pipelines, fittings and bind-
ing screw clamps are loosened or dam-
aged.
Detect the places of leakages and eliminate
them by tightening the connections or re-
placement of the damaged parts.
• The rubber seal of the connecting head is
damaged.
Replace the damaged seal.
• The nut of the O-ring of the connecting
head has been loosened.
Tighten the nut.
• Penetration of dirt under the connecting
head valve.
Clean the valve.
• Contact of the dirt-protection cover with
the stem of the connecting head valve.
Eliminate the contact.
• Maladjustment of the valve actuator. Perform the adjustment (see Section “Con-
struction and Operation of Tractor Compo-
nents”, item “Checking and Adjusting the
Brake Valve of the Pneumatic System and
Its Actuator”).
• The operation of the pressure regulator
and brake valve is disturbed.
Remove the pressure regulator and brake
valve and send them to the workshop for
repair.
The pressure in the air bottle rises slowly: