BELARUS-
1523/1523В
/1523.3
/1523В.3
Troubleshooting
216
Trouble, symptoms
Remedy
gle.
Blue smoke from the exhaust pipe:
Oil in the combustion chamber due to worn-
out parts in the sleeve-piston assembly.
Replace worn-out parts of the sleeve-piston
assembly.
Excess of oil in the engine crankcase.
Drain excessive oil and bring the oil level to
top mark on the dip-stick.
The engine stops suddenly:
The fuel is not fed.
Check the presence of the fuel in the fuel
tank and working condition of the fuel pipe-
lines, filters and lift pump.
The engine overheats:
Lack of coolant in the cooling system.
Add the coolant up to normal level.
The radiator is dirty on the outside.
Clean the radiator.
Dirt and scale in the cooling system.
Clean the cooling system from impurities
and/or scale and flush it.
The thermostat valve fails to open fully.
Replace the thermostat.
Insufficient tension of the fan belt:
The tensioning device spring is broken;
Replace the spring. If it is impossible to re-
place the spring, it is admissible to interlock
the fan clutch by clamping the alternator
plate and the jockey pulley arm with nut and
bolt.
Jamming of jockey-pulley on the lever axle. Dismantle the tensioning device and re-
move the trouble.
The fan driving belt and pulleys are oily.
Remove the driving belt and clean the belt
surface and pulleys from the traces of oil.
The oil pressure in a warmed-up engine is below the allowable value
The pressure gauge indicator is faulty.
Replace the pressure gauge indicator after
checking the oil pressure against a refer-
ence manometer.
Leaks in the connections of oil pipelines.
Locate the leak and restore the leak-
tightness.
Oil pump is faulty.
Locate and remedy the fault.
Oil level in the engine crankcase is lower
than the allowable one.
Top up oil to the upper mark on the dip-
stick.
The safety valve is jammed in the oil filter
body.
Flush the valve through and adjust the
pressure in the lubrication system.
Extreme wear-out of the crankshaft neck-to-
bearing mating interface.
Send the engine to the workshop for repair.
Turbocharger
Turbocharger rotor fails to rotate (a distinctive high-pitch tone is missing):
Presence of foreign items, which impede
the rotor rotation
;
Remove inlet and outlet branch-pipes and
remove the foreign items.
The rotor is seized in the bearing
.
Replace the turbocharger.
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Страница 172: ...BELARUS 1523 1523В 1523 3 1523В 3 Construction and Operation 161 Connecting bundles of the RHL control system ...