BELARUS-
1523/1523В
/1523.3
/1523В.3
Troubleshooting
215
TROUBLESHOOTING
Trouble, symptoms
Remedy
ENGINE
The engine fails to start:
Air in the fuel supply system.
Bleed air from the system using the hand-
operated lift pump. Eliminate the air inleak-
age into the fuel supply system (see Section
“Description and Operation”).
The fuel pump is faulty.
Remove the fuel pump from the engine and
sent it to the workshop for repair.
The fuel filters are clogged.
Wash the fuel coarse filter and replace filter
elements of the fuel fine filter
The engine has too low temperature.
During the cold weather, preheat the engine
using the available starting-facilitating
means.
Engine fails to develop the full power:
The fuel pump control lever would not rest
at the stop.
Adjust the fuel pump control rods.
The fuel fine filter element is clogged.
Replace the fuel fine filter element.
The injectors are faulty.
Locate faulty injectors; wash and adjust
them.
The injection advance angle is misadjusted.
Set the recommended fuel injection ad-
vance angle.
The supercharging pressure has de-
creased.
Remove the turbocharger from the engine
and send the same to the workshop for re-
pair.
Air inleakage into the fuel supply system.
Bleed air from the system using the hand-
operated lift pump.
Engine smoky exhaust under all operation conditions
Black smoke from the exhaust pipe:
Engine air cleaner is clogged.
Service the air-cleaner.
Injector atomizer needle is stuck.
Locate a faulty injector, flush or replace the
atomizer, adjust the injector.
Fuel pump is faulty.
Remove the fuel pump from the engine and
send it to the workshop for repair.
Engine overloading
Reduce the engine loading by shifting-
down.
The injection advance angle is misadjusted Set the required fuel injection advance an-
gle (see Section «Appendices»).
White smoke from the exhaust pipe:
Engine is running overcooled.
Warm up the engine; during the work, main-
tain the coolant temperature within
70…95
°
C.
Ingress of water into fuel.
Change the fuel.
No valve-to-rock arm clearance.
Adjust the valve-to-rock arm clearances.
The injection advance angle is misadjusted.
Set the required fuel injection advance an-
Summary of Contents for 1523
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