UAZ UAZ-374195, Руководство по эксплуатации

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Fig. 9.4 Engine crankcase ventilation system:
1 -hose of the main branch of ventilation; 2 - receiver; 3 - hose of a small branch of ventilation; 4 - valve cover; 5 - gear lubricant
deflector; 6 - crankcase gas exhaust pipe; 7 -intake pipe; 8 -throttle nozzle
Engine cooling system
CAUTION! Cooling liquid is poisonous. Store liquid in tightly closed containers Observe the following rules when
handling with cooling liquid:
- avoid any operations that may result in this fluid entering the oral cavity;
- do not let dry the liquid getting onto the skin , and immediately wash it off with warm water and soap;
- rinse spilled liquid with water, ventilate the room;
- take off liquid contaminated clothing, dry it outside and wash it;
Exercise caution when opening the radiator cap of the engine cooling system in order to avoid steam burns.
The low-freezing liquid OZh-40 "Lena" or "Tosol (-45) "FELIX" is used as a coolant.
Operating temperature of the coolant shall be in the range of 80 °
-
105 °C. Short
-term (up to 5 minutes) engine
operation is allowed when the coolant temperature rises up to 109 °C.
If the coolant overheating warning lamp is on, it is necessary to determine and eliminate immediately the
cause of the overheating.
Periodically check the coolant level in the expansion reservoir 12 (Fig. 3.12) and in the radiator neck. The liquid
level should be 3-4 cm above the "min" mark in the reservoir, and 10-15 mm below the neck in the radiator. Since the
coolant has a high coefficient of thermal expansion and its level varies considerably depending on the temperature, check
the level at the temperature in the 15 -
20 °C.
In cases where a decrease in the coolant level in the expansion reservoir occurred within a short period of time or
after short runs (up to 500 km), check the tightness of the cooling system and, by eliminating leaks, add coolant to the
cooler or expansion reservoir.
Flush the cooling system as follows:
- fill the system with clean water, start the engine, let it work until it warms up, stop the engine and drain the water;
- repeat the above operation.
Due to the presence of air in the heaters and connecting hoses, it is impossible to fill in the entire rate of fluid without
starting the engine. Fill the system in the following order:
- screw the drain plug 20 (Fig. 3.12) of the radiator, close the drain plug 23 of the cylinder block;
- set valve 15 of the heating system to the "open" position;
- fill the radiator with coolant 10-15 mm below the neck and the expansion reservoir 3-4 cm above the "min" mark;
- start the engine, add coolant after the level in the upper radiator reservoir has dropped and close the radiator cap;
- shut off the engine, allow it cooling down, bring the level of coolant in the expansion tank to normal and close the
cap of the expansion tank;
- perform 2-3 warm-up - engine cooling cycles and again bring the level of coolant in the expansion reservoir to
normal.
To drain the fluid from the engine cooling system open radiator plug 9, unscrew the drain plug 20 (Fig. 3.12) of the
radiator, open the plug 23 on the cylinder block. When draining it is necessary to set the lever of the heater tap 15 in the
"open" position.
Tensioning of belt 5 (Fig. 9.5) of the water pump and generator is ensured by idler pulley 2, for which it is necessary
to loosen bolt 3 and, by screwing the adjusting bolt 4, to tension the belt. Tighten the bolts 3.
The belt 16 pull up (Fig. 9.5) of the fan drive and the power steering pump is made by moving the pump 12, for that
it is necessary: loosen the bolts 13, adjust the belt tension by adjusting the tension bolt 14 by moving the pump along the
guides. Tighten the bolts 13.
Fan drive clutch. If the clutch no longer engages or engages incompletely, the engine can overheat. Checking the
serviceability of the clutch must be carried out in the UAZ service stations equipped with specialized equipment.
Keep outer surface of the clutch in clean.