4.24. Cooling system

Fig. 4.12. System of cooling of the engine: 1 – a hose of a supply of a liquid to the pump; 2 – the water pump; 3 – a taking away tube of a radiator of a heater; 4 – a bringing branch pipe of a radiator of a heater; 5 – the gauge of temperature of a cooling liquid; 6 – electrofans of system of cooling; 7 – a stopper; 8 – a radiator support; 9 – an arm; 10 – the top casing of a radiator; 11 – a radiator; 12 – the bottom casing of a radiator; 13 – a steam-air hose of a broad tank; 14 – a bringing hose of a radiator; 15 – the thermostat; 16 – a taking away hose of a radiator; 17 – a liquid hose of a broad tank; 18 – a broad tank

Cooling system – liquid, the closed type, with compulsory circulation of a liquid, with a broad tank. The pump of a cooling liquid 2 (fig. 4.12) centrifugal type, is put in action from a pulley of a cranked shaft клиновым (or in alternative execution поликлиновым) by a belt.

Electrofans 6 with plastic крыльчатками are established in the general casing fixed on a back surface of a radiator 11, and force air through a radiator core in подкапотное space. Switches on and off electrofans depending on temperature of a cooling liquid the gauge 5 screwed in a reception branch pipe of a water shirt of a head of the block of cylinders.

Fig. 4.13. The thermostat: 1 – an entrance branch pipe (from the engine); 2 – перепускной the valve; 3 – a spring перепускного the valve; 4 – a glass; 5 – a rubber insert; 6 – a target branch pipe; 7 – a spring The basic valve; 8 – a saddle of the basic valve; 9 – the basic valve; 10 – the holder; 11 – an adjusting nut; 12 – the piston; 13 – an entrance branch pipe (from a radiator); 14 – наполнитель; 15 – a holder; Д – an input of a liquid from the engine; Р – an input of a liquid from a radiator; Н – a liquid exit to the pump

The thermostat 15 with firm thermosensitive наполнителем has the basic 9 (fig. 4.13) and перепускной 2 valves. The beginning of opening of the basic valve at temperature охлаждаюшей liquids 79–82 °С, a course of the basic valve not less than 6 mm.

Radiator 11 (fig. 4.12 see) – horizontal, trubchato-lamellar, aluminium with plastic tanks.

Cooling liquid fill in through a mouth of a broad tank 18. The stopper of a broad tank has inlet and final valves.

The cooling system is filled by a cooling liquid of Tosol-A40M.

THE NOTE The replacement procedure of a cooling liquid is described in the beginning of section 4 "Engine".

THE PREVENTION It is not recommended to fill system of cooling with water as the antifreeze structure includes anticorrosive and antimaking foam additives, and also the additives interfering adjournment of a scum.

The insufficient tension of a belt worsens liquid circulation in cooling system that leads to an engine overheat. Additional charge of the storage battery besides worsens and повышенно the belt wears out.

At too strong tension bearings of the water pump and the generator can fail.

Check a tension of a belt of a drive of the water pump and the generator from above in подкапотном space.

Fig. 4.14. The scheme of check of a tension клинового a belt of a drive of the water pump and the generator: 1 – a generator pulley; 2 – a pump pulley; 3 – a pulley of a cranked shaft

The tension is characterised by size of a deflection of a belt between pulleys of the pump and a cranked shaft (deflection) (fig. 4.14) or pulleys of the generator and the pump (deflection) at the appendix of effort 98,1 Н (10 кгс) in the middle of distance between pulleys. The deflection And should be 10–15 mm, a deflection In – 12–17 mm.

GOOD ADVICE More conveniently to check tension A.Dlja's deflection of check it is possible to use spring scales-steelyards, having hooked on their hook on a branch of a belt and delaying it upwards.

Belt tension regulate on the car established on the lift or a viewing ditch. Adjustment is carried out by moving of the generator concerning the engine.

It be required to you: a key «on 13», an assembly shovel.

1. Remove protection oil crankcase and an engine mudguard (Removal and installation of protection oil crankcase and an engine mudguard »see«).

2. Ослабьте approximately on one turn a nut of fastening of the generator to a tension lath and...	3.... A nut of the bottom fastening of the generator.

4. For increase in a tension of a belt move the generator from the engine.

THE PREVENTION Moving the generator for increase in a tension of a belt, effort put only to the generator case, placing an assembly shovel between the case and the engine.

5. For reduction of a tension of a belt by a hand move

The generator to the engine.

6. Without changing generator position, tighten a nut of fastening of the generator to a tension lath and a nut of the bottom fastening of the generator.