Hyundai Getz>> Engine>> Cooling system
Features of the device
Engines of Hyundai cars are equipped with circulating system of cooling. For circulation of cooling liquid the centrifugal pump serves. The system of cooling of the engine consists of a shirt of cooling, a radiator with the electrofan, the centrifugal water pump, the thermostat and hoses. The system of cooling works with a separate broad tank.
Management of a contour of cooling liquid the thermostatic. While the engine cold, cooling liquid circulates only in a head of the block of cylinders, the block of cylinders and the heat exchanger. In process of engine warming up the thermostat opens a big contour of system of cooling. Cooling liquid starts to move constantly working pump through a radiator of system of cooling. Cooling liquid passes through a radiator from top to down, being cooled passing between radiator plates air.
When the temperature of cooling liquid is in a range of 92-97 °C, the thermoswitch turns on the radiator electrofan. The electrofan is put in action by the electric motor and works until the temperature of cooling liquid will not fall below 84–91 °C.

PREVENTION
Be careful – the electrofan of a radiator can turn on and at the switched-off ignition. Because of heat in a motor compartment it can occur several times.

Thanks to that that the fan works changeably, useful engine capacity increases, fuel consumption decreases.
The Beskorpusny thermostat of system of cooling – with a firm thermosensitive filler.
Radiator of system of cooling tubular and lamellar, aluminum, with plastic tanks. Cooling liquid is filled in in system through a bulk mouth of the broad tank which stopper is supplied inlet and final with valves.

Cars with engines in working volume of 1,1 and 1,3 l 
Check of tightness of system of cooling
Wait, while the engine will cool down, then carefully remove a radiator stopper.
Check level of cooling liquid (should be at the bottom edge of a mouth of a radiator).
Establish on a radiator mouth the adaptation for check of jams of a radiator and create in system pressure of 140 kPas (1,4 kgfs/cm 2 ). Supporting the specified pressure during 2 mines, be convinced of absence of leakages of liquid from system, through hoses and connections.
In the presence of leakages of liquid eliminate them or replace faulty details.

       NOTE
The temperature of cooling liquid can be very high. Do not open cooling system on the hot engine as thus there can be an emission of hot liquid that will cause burns. Start works with cooling system only after engine cooling.

Dry wipe checked knots and connections of system of cooling.
At removal of the verifying adaptation watch that from it cooling liquid did not pour out.
At installation, check and removal of the verifying adaptation try not to deform a radiator mouth.
Check of a stopper of a radiator of system of cooling 

Fig. 2.89. The adaptation for check of a stopper of a radiator


Remove a radiator stopper, moisten laying of a stopper by cooling liquid and establish a stopper on the adaptation for check (fig. 2.89) .
Create the adaptation pressure until the arrow of a manometer of the adaptation will cease to deviate.

       NOTE
Pressure of opening of the steam valve – 78–108 kPas (0,8–1,1 kgfs/cm 2 ).
Maximum permissible value – 65 kPas (0,66 kgfs/cm 2 ).

Be convinced that opening of valves occurs at pressure not less specified.
If opening of valves begins at smaller pressure, replace a radiator stopper.

       NOTE
Before check be convinced of purity of a stopper of a radiator: if on laying of a stopper there are traces of a rust or other pollution, results of check will be inexact.

Replacement of cooling liquid
It is necessary to replace cooling liquid only after repair of system of cooling at which liquid merged. Replacement within annual maintenance is not provided. If at repair the head of the block of cylinders, laying of a head of the block of cylinders, a radiator, a radiator of a heater or the engine were replaced, in any case it is necessary to replace cooling liquid. It is required for the reason that anticorrosive particles in a phase extra earnings, settling on details of system of the cooling, the light metals made of alloys, provide creation of a durable anticorrosive layer. The share of anticorrosive particles in the liquid which was in the use is not so great to create on new details a sufficient protective layer.

PREVENTIONS
It is impossible to use repeatedly merged cooling liquid – it is poisonous. It cannot be poured out simply in the sewerage or on the earth. Utilize cooling liquid in places specially taken away for this purpose.
At plum of cooling liquid watch that the cover of the block of the relay was closed, do not allow liquid hit on elements of electric equipment and a paint and varnish covering of a body. If liquid spills, at once wash away it a large amount of water.

Establish the handle of the switch of temperature in the situation corresponding to the maximum temperature of air submitted to salon. Be convinced that the engine and a radiator to the touch the cold.
Remove a radiator stopper.
Reliably tighten a drain stopper of a radiator.

Fig. 2.90. Drain stopper of a radiator


Weaken an inhaling of a drain stopper (fig. 2.90) and merge cooling liquid.
Remove a broad tank, merge from it liquid and establish a tank into place.
Fill in in a tank the distilled water to level between labels of "MIN" and "MOVE", then этиленгликоль to a label "MOVE".
Fill in cooling liquid in a radiator to the bottom edge of a mouth and establish a radiator stopper, without tightening it.
Start up and warm up the engine before turning on of the electrofan, let's to the engine work before repeated turning on of the fan.
Stop the engine. Check and if necessary restore to norm liquid level in a radiator.
Tighten a radiator stopper, then start up the engine and be convinced of absence of leaks.
Check of density of cooling liquid
The system of cooling should be all the year round filled with solution этиленгликоля in water that prevents the damages caused by freezing and corrosion, formation of limy deposits and, besides, increases a boiling point of cooling liquid. In a contour of system of cooling
because of liquid expansion when heating superfluous pressure is created that also promotes increase of a boiling point of liquid. Pressure is limited to the valve in a cover of a broad tank. Higher boiling point of cooling liquid is necessary for normal work of system of cooling. At too low boiling point in system steam jams because of what damage of a cooling contour and reduction of cooling of the engine is possible can be formed. Therefore the system of cooling should be all the year round filled with antifreeze.
As cooling liquid antifreeze on a basis этиленгликоля for details from aluminum alloys can be used only.

       NOTE
Level of cooling liquid is recommended to be checked on the cold engine as when heating its volume increases and in the heated-up engine level of liquid can rise considerably.

Remove a radiator stopper.
Check the areometer density of cooling liquid which should be 1,078–1,085 g/cm 3 .
If level in a tank is lower than norm, and the density of liquid is higher specified, add the distilled water. If density normal, add liquid of the same brand, as the liquid being in system of cooling. When the density is lower than norm, restore it a concentrate.

PREVENTIONS
At concentration of antifreeze below 30 % anticorrosive properties of cooling liquid decrease.
At concentration above 60 % frost resistance and cooling properties of liquid decrease that negatively influences operation of the engine. Therefore it is necessary to support concentration этиленгликоля in the specified limits.
Do not mix cooling liquids of different brands.

Hoses and pipelines of system of cooling

Fig. 2.91. Hoses and pipelines of system of cooling of the engine in working volume of 1,3 l


Hoses and pipelines of system of cooling of the engine in working volume of 1,3 l are shown on fig. 2.91 .

Fig. 2.92. Hoses and pipelines of system of cooling of the engine in working volume of 1,1 l


Hoses and pipelines of system of cooling of the engine in working volume of 1,1 l are shown on fig. 2.92 .
Check of a technical condition
Check pipelines and hoses of system of cooling on lack of cracks, damages and reduction of section through passage.
If necessary replace defective details.
Assembly
Insert a sealing ring into a flute on the end of the bringing pipeline, moisten a sealing ring with cooling liquid and attach bringing pipeline to the block of cylinders.
Be convinced available labels of yellow color on a bringing hose and attach the hose end with a yellow label by the end of the bringing pipeline with a yellow label.

       NOTES
Do not put oil or greasing on a sealing ring of the bringing pipeline.
The bringing pipeline should be inserted against the stop into a nest in the block of cylinders.
The removed sealing rings repeatedly are not used and is subject to replacement with the new.

Centrifugal pump of system of cooling 

Fig. 2.93. Centrifugal pump of system of cooling of the engine in working volume of 1,3 l


The centrifugal pump of system of cooling of the engine in working volume of 1,3 l is shown on fig. 2.93 .

Fig. 2.94. Centrifugal pump of system of cooling of the engine in working volume of 1,1 l


The centrifugal pump of system of cooling of the engine in working volume of 1,1 l is shown on fig. 2.94 .
Removal
Merge cooling liquid and disconnect from the pump a branch pipe of the bringing pipeline.
Remove a belt of a drive and a pump pulley.
Remove covers of a drive of the gas-distributing mechanism.
Unscrew bolts of fastening of the pump and remove a tension level of the generator.
Remove the pump from the block of cylinders.
Check of a technical condition
Check all details on existence of cracks, damages or wear and if necessary replace the pump.
Check the pump bearing on existence of the damages, the increased noise and jamming, if necessary replace the pump assembled.

Fig. 2.95. The pump of cooling liquid


Check the pump on existence of leakages of liquid. Leaks through an opening And (fig. 2.95) indicate a leakage of consolidations of a shaft of the pump. In the presence of leaks replace the pump.
Installation
Clear surfaces of interface of the water pump and the block of cylinders.
Establish covers of a drive of the gas-distributing mechanism.
Establish a pulley of the water pump and a drive belt, adjust a tension of a belt of a drive.
Fill in in system cooling liquid.
Start up the engine and be convinced of absence of leakages of liquid.

Fig. 2.96. Bolts of fastening of the pump of cooling liquid of engines in working volume of 1,3 l


Fig. 2.97. Bolts of fastening of the pump of cooling liquid of engines in working volume of 1,1 l


Establish the water pump with new laying and tighten fastening bolts (fig. 2.96 and 2.97) of the water pump to the block of cylinders of engines in working volume of 1,3 l the moment of 12-15 N · m, engines in volume of 1,1 l – 8–10 N · m (length of a bolt of 28 mm).
Establish a belt of a drive of the gas-distributing mechanism. Adjust its tension.

Radiator of system of cooling
Removal

Fig. 2.98. Socket of the electric motor of the fan of system of cooling


Separate the socket of the electric motor of the fan (fig. 2.98) .
Establish the handle of the switch of temperature in the situation corresponding to the maximum temperature of air submitted to salon.

Fig. 2.99. Stopper of a drain opening of a radiator


Weaken an inhaling of a stopper of a drain opening of a radiator (fig. 2.99) and merge cooling liquid.

Fig. 2.100. A detachment from an automatic transmission of hoses of a cooler of oil


On cars with an automatic transmission disconnect from a transmission hoses of a cooler of oil (fig. 2.100) .

Fig. 2.101. Bolts of fastening of a radiator


Unscrew bolts of fastening of a radiator (fig. 2.101) .
Disconnect from a radiator bringing and taking-away hoses and a hose of a broad tank.

PREVENTION
Muffle openings of hoses of a cooler of oil and transmission unions for prevention of an effluence of oil and for protection of system against pollution.

Remove a radiator together with the electrofan.
Remove the electrofan from a radiator.
Check of a technical condition
Check a radiator on existence of the pognuty or broken plates.
Check a radiator on existence of traces of corrosion, damages, rusts and scums.
Check radiator hoses on formation of cracks, damages and deterioration of properties of a material.
Check a broad tank on existence of damages.
Check serviceability of a spring of a stopper of a radiator.
Check pressure of opening of the valve of a stopper of a radiator by means of the adaptation for check of system of cooling.
Check laying of a stopper of a radiator on existence of cracks and damages.
Installation
Fill in in a radiator and a broad tank pure cooling liquid.
Start up and warm up the engine before opening of the valve of the thermostat.
Stop the engine.
Remove a stopper of a radiator and add cooling liquid to an edge of a bulk mouth, then add liquid in a broad tank to the top label ("MOVE").
Be convinced of absence of leakages of liquid from a radiator, through hoses and connections.

Electric fan of system of cooling
Check of a technical condition

Fig. 2.102. Check of operability of the electric motor of the fan


Be convinced that the electrofan turns on when giving tension of the storage battery on electric motor conclusions (fig. 2.102) .
Be convinced of absence of extraneous noise in electrofan operating time.

Stopper of a radiator of system of cooling

Fig. 2.103. Scheme of work of a stopper of a radiator:
a–at pressure decrease to 81,4–108,0 kPas (0,83–1,1 kgfs/cm2); b–at depression of 6,86 kPas (0,07 kgfs/cm2)


The stopper of a radiator of system of cooling is shown on fig. 2.103 .
Check of a technical condition
Check a radiator stopper on absence of damages, cracks and deterioration of properties of a material of laying (elasticity loss).
Attach a stopper to the adaptation for check of a stopper of a radiator.

Fig. 2.104. The adaptation for check of operability of a stopper of a radiator


By means of the pump of the adaptation create pressure before the termination of a deviation of an arrow of a manometer (fig. 2.104) .
The stopper of a radiator is serviceable, if the arrow of a manometer during 10 with shows pressure above the worker.

Thermostat of system of cooling

Fig. 2.105. Thermostat of system of cooling of the engine in working volume of 1,3 l: 1–thermostat case; 2–thermostat; 3–laying; 4–by-pass branch pipe


Fig. 2.106. Thermostat of system of cooling of the engine in working volume of 1,1 l: 1–the sensor of temperature of cooling liquid; 2–thermostat case; 3–heater hose; 4–by-pass branch pipe; 5–thermostat


The thermostat of system of cooling of the engine in working volume of 1,3 l is shown on fig. 2.105 , the engine in working volume of 1,1 l – on fig. 2.106 .
Removal
Merge cooling liquid so that its level in a shirt of cooling of the engine was up to standard of the thermostat or below.
Remove bringing branch pipe and laying.
Remove the thermostat.
Check of a technical condition

Fig. 2.107. Thermostat check


Check temperature of opening of the valve of the thermostat, having shipped the thermostat in hot cooling liquid (fig. 2.107) . If necessary replace the thermostat.
Temperature of the beginning of opening of the valve of the thermostat of 82 °C.
Temperature of complete opening of the valve of the thermostat of 95 °C.
Valve stroke (at complete opening) – 8,5 mm.
Installation
Check correctness of landing of a flange of the valve of the thermostat in a nest of the case of the thermostat. If the thermostat is established incorrectly, its lower part will touch an edge in a bringing branch pipe that will lead to violation of operation of the thermostat.
Establish taking-away branch pipe with new laying.
Fill in in system fresh cooling liquid.

The sensor of temperature of cooling liquid
Check of a technical condition
Ship the sensor in hot cooling liquid.

Fig. 2.108. Check of the sensor of temperature of cooling liquid


Check, whether there corresponds resistance of the sensor to norm (fig. 2.108) .
Resistance of the sensor at temperature
60 °C – 123,8–172,8 Ohm, at temperature
115 °C – 23,5–29,5 Ohm.

Cars with engines in working volume of 1,5 and 1,6 l  
Check of tightness of system of cooling
Wait, when the engine will cool down, then carefully remove a radiator stopper.
Check level of cooling liquid (should be at the bottom edge of a mouth of a radiator).
Establish on a radiator mouth the adaptation for check of jams of a radiator and create in system pressure of 140 kPas
(1,4 kgfs/cm 2 ). Supporting the specified pressure during 2 mines, be convinced of absence of leakages of liquid from system, through hoses and connections.
In the presence of leakages of liquid eliminate them or replace faulty details.

PREVENTIONS
Cooling liquid can be very high temperature. Do not open cooling system on the hot engine as there can be an emission of hot liquid that will cause burns. Start to work with cooling system only after engine cooling.
Dry wipe checked knots and connections of system of cooling.
At removal of the verifying adaptation watch that from it cooling liquid did not pour out.
At installation, check and removal of the verifying adaptation watch that the radiator mouth was not deformed.

Check of a stopper of a radiator of system of cooling

Fig. 2.109. The adaptation for check of a stopper of a radiator


Remove a radiator stopper, moisten laying of a stopper by cooling liquid and establish a stopper on the adaptation for check (fig. 2.109) .
Create the adaptation pressure until the arrow of a manometer of the adaptation will not cease to deviate.

       NOTE
Pressure of opening of the steam valve of 78-108 kPas (0,8–1,1 kgfs/cm 2 ), maximum permissible value of 65 kPas (0,66 kgfs/cm 2 ).

Be convinced that valves open at pressure not less specified.
If opening of valves occurs at smaller pressure, replace a radiator stopper.

       NOTE
Before check be convinced of purity of a stopper of a radiator as if on laying of a stopper there are traces of a rust or other pollution, results of check will be inexact.

Replacement of cooling liquid
Cooling liquid should be replaced only after repair of system of cooling at which liquid merged. Replacement within annual maintenance is not provided. If at repair the head of the block of cylinders, head laying, a radiator, a radiator of a heater or the engine were replaced, in any case it is necessary to replace cooling liquid. It is required for the reason that anticorrosive particles, settling in a phase extra earnings on details of system of the cooling, the light metals made of alloys, provide creation of a durable anticorrosive layer. In the liquid which was in the use the share of anticorrosive particles is not so great to create on new details a sufficient protective layer.

PREVENTIONS
It is impossible to reuse the merged cooling liquid. Liquid is poisonous – it cannot be poured out in the sewerage or on the earth. Utilize cooling liquid in places specially taken away for this purpose.
At plum of cooling liquid watch that the cover of the block of the relay was closed, do not allow liquid hit on elements of electric equipment and a paint and varnish covering of a body. If liquid spills, at once wash away it a large amount of water.

Establish the handle of the switch of temperature in the situation corresponding to the maximum temperature of air submitted to salon. Be convinced that the engine and a radiator to the touch the cold.
Remove a radiator stopper.

Fig. 2.110. Drain stopper of a radiator


Weaken an inhaling of a drain stopper (fig. 2.110) and merge cooling liquid.
Reliably tighten a drain stopper of a radiator.
Remove a broad tank, merge from it liquid and establish a tank into place.
Fill in in a tank the distilled water to level between labels of "MIN" and "MOVE", then этиленгликоль to a label "MOVE".
Fill in cooling liquid in a radiator to the bottom edge of a mouth and establish a radiator stopper, without tightening it.
Start up and warm up the engine before turning on of the electrofan, let's to the engine work before repeated turning on of the fan.
Stop the engine. Check and if necessary restore to norm liquid level in a radiator.
Tighten a radiator stopper, then start up the engine and be convinced of absence of leaks.
Check of density of cooling liquid
The system of cooling should be all the year round filled with solution этиленгликоля in water, it prevents the damages caused by freezing and corrosion, formation of limy deposits and, besides, increases a boiling point of cooling liquid. In a contour of system of cooling because of liquid expansion when heating superfluous pressure is created that also promotes increase of a boiling point of liquid. Pressure is limited to the valve in a cover of a broad tank. Higher boiling point of cooling liquid is necessary for normal work of system of cooling. At too low boiling point in system steam jams because of what damage of a cooling contour and deterioration of cooling of the engine is possible can be formed. Therefore the system of cooling should be all the year round filled with antifreeze.
As cooling liquid antifreeze on a basis этиленгликоля for details from aluminum alloys can be used only.
Remove a radiator stopper.

       NOTE
Level of cooling liquid is recommended to be checked on the cold engine as when heating its volume increases and in the heated-up engine level of liquid can rise considerably.

Check the areometer density of cooling liquid which should be 1,078–1,085 g/cm 3 .

PREVENTIONS
At concentration этиленгликоля below 30 % anticorrosive properties of cooling liquid decrease.
At concentration above 60 % frost resistance and cooling properties of liquid decrease that negatively influences operation of the engine. Therefore it is necessary to support concentration этиленгликоля in the specified limits.
Do not mix cooling liquids of different brands.

Fig. 2.111. Scheme of system of cooling of engines in working volume of 1,5 and 1,6 l: 1–radiator; 2–the pump of cooling liquid; 3–shirt of cooling of the block of cylinders; 4–shirt of cooling of a head of the block of cylinders; 5–radiator of a heater of salon; 6–thermostat


The scheme of system of cooling of engines in working volume of 1,5 and 1,6 l is shown on fig. 2.111 .

If level in a tank is lower than norm, and the density of liquid is higher specified, add the distilled water. If density
normal, add liquid of the same brand, as the liquid which has been filled in in system of cooling. If the density is lower than norm, finish it to norm, having added a concentrate.

Fig. 2.112. Hoses and pipelines of system of cooling of engines in working volume
1,5 and 1,6 l


Hoses and pipelines of system of cooling of engines in working volume of 1,5 and 1,6 l are shown on fig. 2.112 .
Check of a technical condition
Check pipelines and hoses of system of cooling on lack of cracks, damages and reduction of section through passage.
If necessary replace defective details.

       NOTES
Do not put oil or greasing on a sealing ring of the bringing pipeline.
Clear pipeline connections of sand, a dust, etc.
Bringing pipeline insert against the stop into a nest in the block of cylinders.
The removed sealing ring repeatedly is not used and is subject to replacement with the new.

Installation

Fig. 2.113. Installation of the pump of cooling liquid: 1–block of cylinders; 2-pipeline; 3–the pump of cooling liquid


Insert a sealing ring into a flute on the end of the bringing pipeline, moisten a sealing ring with cooling liquid and attach bringing pipeline to the block of cylinders (fig. 2.113) .

Centrifugal pump of system of cooling 
Removal
Merge cooling liquid and disconnect from the pump a branch pipe of the bringing pipeline.
Remove a belt of a drive and a pump pulley.
Remove covers of a drive of the gas-distributing mechanism and bypass a roller of a belt of a drive of the gas-distributing mechanism.
Unscrew bolts of fastening of the pump and remove a tension level of the generator.

Fig. 2.114. Centrifugal pump of system of cooling: 1–bottom level of the generator; 2–pump;
3–laying; 4–pump pulley; 5–driving belt


Remove the pump from the block of cylinders (fig. 2.114) .
Check of a technical condition
Check all details on existence of cracks, damages or wear and if necessary replace the pump.
Check the pump bearing on existence of the damages, the increased noise and jamming, if necessary replace the pump assembled.
Check the pump on existence of leakages of liquid. Leaks indicate a leakage of consolidations of a shaft of the pump. In the presence of leaks replace the pump.
Installation
Clear surfaces of interface of the pump and the block of cylinders.

Fig. 2.115. Bolts of fastening of the pump of cooling liquid to the block of cylinders


Establish the pump with new laying and tighten fastening bolts (fig. 2.115) the specified moment.
The moment of an inhaling of bolts of fastening of the water pump to the block of cylinders, N · м:

Fig. 2.116. Radiator of system of cooling: 1–top support of a radiator; 2–radiator stopper; 3–hose of a broad tank; 4–a bringing hose of a radiator; 5–broad tank; 6–fan electric motor; 7–bottom elastic support; 8–hoses of a cooler of oil (cars with an automatic transmission); 9–a taking-away hose of a radiator


bolts And (see fig. 2.116 )..... 12–15
bolts In...... 20–27
Establish a tension roller and a belt of a drive of the gas-distributing mechanism. Adjust a tension of a belt of a drive of the gas-distributing mechanism. Establish covers of a drive of the gas-distributing mechanism.
Establish a pulley of the pump of cooling liquid and a drive belt, adjust a belt tension.
Fill in in system cooling liquid.
Start up the engine and be convinced of absence of leakages of cooling liquid.

Radiator of system of cooling
The radiator of system of cooling is shown on fig. 2.116 .
Removal

Fig. 2.117. Socket of the electric motor of the fan of system of cooling


Separate the socket of the electric motor of the fan (fig. 2.117) .
Establish the handle of the switch of temperature in the situation corresponding to the maximum temperature of air submitted to salon.

Fig. 2.118. Stopper of a drain opening of a radiator


Weaken an inhaling of a stopper of a drain opening of a radiator (fig. 2.118) and merge cooling liquid.

Fig. 2.119. A detachment from an automatic transmission of hoses of a cooler of oil


On cars with an automatic transmission disconnect from a transmission hoses of a maslookhladitel (fig. 2.119) .

PREVENTION
Muffle openings of hoses of a cooler of oil and transmission unions for prevention of an effluence of oil and for protection of system against pollution.

Fig. 2.120. Bolts of fastening of a radiator Remove a radiator together with the electrofan.


Unscrew bolts of fastening of a radiator (fig. 2.120) .
Remove a radiator together with the electrofan.
Remove the electrofan from a radiator.
Check of a technical condition
Check a radiator on lack of the pognuty or broken plates.
Check a radiator on lack of traces of corrosion, damages and a scum.
Check radiator hoses on lack of cracks, damages and deterioration of properties of a material.
Check a broad tank on absence of damages.
Check serviceability of a spring of a stopper of a radiator.
Check pressure of opening of the valve of a stopper of a radiator by means of the adaptation for check of system of cooling.
Check laying of a stopper of a radiator on lack of cracks and damages.
Installation
Fill in in a radiator and a broad tank pure cooling liquid.
Start up and warm up the engine before opening of the valve of the thermostat.
Stop the engine.
Remove a stopper of a radiator and add cooling liquid to an edge of a bulk mouth, then add liquid in a broad tank to the top label ("MOVE").
Be convinced of absence of leakages of liquid from a radiator, through hoses and connections.

Electric fan of system of cooling 
Check of a technical condition

Fig. 2.121. Check of operability of the electric motor of the fan


Be convinced that the electrofan turns on when giving tension of the storage battery on electric motor conclusions (fig. 2.121) .
Be convinced of absence of extraneous noise in electrofan operating time.

Stopper of a radiator of system of cooling 
Check of a technical condition

Fig. 2.122. Scheme of work of a stopper of a radiator:
a–at pressure decrease to 81,4–108,0 kPas (0,83–1,1 kgfs/cm2); b–at depression of 6,86 kPas (0,07 kgfs/cm2)


Check a radiator stopper on absence of damages, cracks and deterioration of properties of a material of laying (elasticity loss) (fig. 2.122) .
Attach a stopper to the adaptation for check of a stopper of a radiator.

Fig. 2.123. The adaptation for check of operability of a stopper of a radiator


By means of the pump of the adaptation create pressure before the termination of a deviation of an arrow of a manometer (fig. 2.123) .
The stopper of a radiator is serviceable, if the arrow of a manometer during 10 with shows pressure above the worker.

Thermostat of system of cooling

Fig. 2.124. Thermostat of system of cooling: 1–the sensor of temperature of cooling liquid; 2–thermostat case; 3–laying; 4–thermostat; 5–laying; 6–a bringing branch pipe


The thermostat of system of cooling is shown on fig. 2.124 .
Removal
Merge cooling liquid so that its level in a shirt of cooling of the engine was up to standard of the thermostat or below.
Remove bringing branch pipe and laying.
Remove the thermostat.
Check of a technical condition

Fig. 2.125. Scheme of check of the thermostat: 1–thermometer


Check temperature of opening of the valve of the thermostat, having shipped the thermostat in hot cooling liquid (fig. 2.125) . If necessary replace the thermostat.
Temperature of the beginning of opening of the valve of the thermostat of-82 °C.
Temperature of complete opening of the valve of the thermostat of-95 °C.
Installation
Check correctness of landing of a flange of the valve of the thermostat in a nest of the case of the thermostat. If the thermostat is established incorrectly, its lower part will touch an edge in a bringing branch pipe that will lead to violation of operation of the thermostat.
Establish taking-away branch pipe with new laying.
Fill in in system fresh cooling liquid.

The sensor of temperature of cooling liquid
Removal
Merge cooling liquid so that its level in a shirt of cooling of the engine was up to standard of the thermostat or below.
Remove the sensor of temperature of cooling liquid.
Check of a technical condition
Ship the sensor in hot cooling liquid.

Fig. 2.126. The scheme of check of the sensor of temperature of cooling liquid


Check, whether there corresponds resistance of the sensor to norm (fig. 2.126) .
Resistance of the sensor at temperature of 20 °C should be 2,31–2,59 kiloohms.
Installation
Screw a hand the sensor of temperature of cooling liquid in an opening in the thermostat case.
Tighten the sensor the moment of 20-40 N · m.
Fill in in system fresh cooling liquid.