Lada Niva Manual - Maintenance
Page 7
Check the engine idling performance. For this purpose, abruptly depress and release the
accelerator pedal; in this case the engine speed should increase smoothly without missing.
The engine should not stall when the idling speed is reduced to minimum. If the idling speed
fine adjustment fails to ensure normal running of the engine without missing, apply to a
service station for a qualified help.
CRANKCASE BREATHING SYSTEM
Every 20.000 Km clean and wash with gasoline the hoses of the crank- case breathing
system, the shut-off valve on the carburettor throttle valve shaft, and the flame arrester
located in the exhaust hose running from the engine to the air cleaner.
COOLING SYSTEM
Coolant
The cooling system of the cars leaving the plant is filled with
special fluid A-40M. This fluid is an ethylene glycol mixture
with a freezing point of minus 40"C and anticorrosive,
antifoaming and antiscaling properties. It needs no replacement
within a period of three years. Therefore, care of the cooling
system during this period consists only in checking at regular
intervals the fluid level in the expansion tank.
The fluid level should always be 3-4 cm above the MIN mark
(Fig. 38). Check the fluid level on a cold engine only, since when
the engine is hot the level may rise significantly; expansion of the fluid volume may also take
place immediately after engine shutdown.
Fig 38
Cooling system expansion tank
If the fluid level is below the MIN mark, replenish the expansion tank with fluid of the same
grade. If the coolant level drops constantly and frequent replenishments are required, check
the cooling system for leakage and eliminate the trouble. In an emergency the cooling system
may be filled with clean water. In this case proceed as follows:
•
Cool the engine.
•
Remove the caps from the radiator and expansion tank.
•
Pour water into the radiator (keep pouring water until it starts flowing out of the radiator
filler neck).
•
Reinstall the radiator cap.
•
Add water into the expansion tank until its level is 3-4 cm above the MIN mark.
•
Reinstall the expansion tank cap.
In cold seasons if water has been added into the cooling system and before placing the car in
motion, warm the engine up to 85-90"C to make the fluids mix. Bear in mind that water added
into the cooling system raises the freezing temperature of the mixture; therefore, per- form the
necessary repairs of the cooling system at the first opportunity and fill it with the coolant of
the prescribed grade.
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