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Engine GA16 VEGA TAGAZ
Engine GA16 VEGA TAGAZ
MECHANICAL SYSTEM OF THE ENGINE GA16 VEGA TAGAZ
GENERAL DESCRIPTION
The GA16 engine was developed at the TagAZ Korea plant for installation on the S-100 model. During the development, modern requirements for the noise level and the content of harmful substances in exhaust gases were taken into account.
Noise reduction: V-ribbed belt / automatic valve lifters / timing belt drive.
TECHNICAL CHARACTERISTICS of the GA16 VEGA TAGAZ engine
| Options | Values | Limit values | |||||||
| general information | |||||||||
| engine's type | GA16 | ||||||||
| Number of cylinders | |||||||||
| Cylinder inner diameter (mm) | |||||||||
| Cylinder stroke (mm) | |||||||||
| Volume (cm 3) | |||||||||
| Compression ratio | 10.0:1 | ||||||||
| Maximum power (hp per rpm) | 124/5600 | ||||||||
| Maximum Torque (kg*m per rpm) | 17.6/4400 | ||||||||
| idle | Air conditioner OFF | 775± 50 | |||||||
| Air conditioner ON | 800±50 | ||||||||
| Ignition Order | 1-3-4-2 | ||||||||
| Ignition timing (˚) | 4 ~ 6 | ||||||||
| Valve timing | |||||||||
| Inlet valve | Opening (before TDC) | 16 | |||||||
| Closing (after TDC) | 44˚ | ||||||||
| Exhaust valve | Opening (before TDC) | 23˚ | |||||||
| Closing (after TDC) | 5 | ||||||||
| cylinder head | |||||||||
| Warping of cylinder head gasket plane(mm) | Less than 0.05 | ||||||||
| Valve Guide Diameter (Inlet/Outlet) | Standard (mm) | 9.490 | |||||||
| Repair size 0.25 (mm) | 9.740 | ||||||||
| Repair size 0.50 (mm) | 9.990 | ||||||||
| Intake valve seat insert hole diameter | Standard (mm) | 32.013 | |||||||
| Repair size 0.3 (mm) | 32.313 | ||||||||
| Repair size 0.6 (mm) | 32.613 | ||||||||
| Exhaust valve seat insert hole diameter | Standard (mm) | 27.013 | |||||||
| Repair size 0.3 (mm) | 27.313 | ||||||||
| Repair size 0.6 (mm) | 27.613 | ||||||||
| Camshaft | |||||||||
| Cam Height | Inlet (mm) | 7.9114 ~ 8.1114 | |||||||
| Graduation (mm) | 6.5378 ~ 6.7378 | ||||||||
| Shaft journal outer diameter (inlet/outlet) (mm) | 29.935 ~ 26.950 | ||||||||
| Camshaft Cover Oil Clearance (mm) | 0.050 ~ 0.086 | 0.1mm | |||||||
| End play (mm) | 0.1 ~ 0.2 | ||||||||
| Valve | |||||||||
| Valve length | Inlet (mm) | 100.2 | |||||||
| Graduation (mm) | |||||||||
| Rod diameter | Inlet (mm) | 5.465 ~ 5.480 | |||||||
| Graduation (mm) | 5.445 ~ 5.460 | ||||||||
| Valve face angle | 45˚15"~45˚45" | ||||||||
| Valve plate thickness (edge) | Inlet (mm) | 1.0 | 0.5 | ||||||
| Graduation (mm) | 1.0 | 0.5 | |||||||
| Clearance between stem and valve guide | Inlet (mm) | 0.020 ~ 0.050 | 0.1 | ||||||
| Graduation (mm) | 0.040 ~ 0.070 | 0.15 | |||||||
| valve guide | |||||||||
| Length | Inlet (mm) | 44.8 ~ 45.2 | |||||||
| Graduation (mm) | 44.8 ~ 45.2 | ||||||||
| Valve seat | |||||||||
| Seat contact surface thickness (chamfer) | Inlet (mm) | 1.0 ~ 1.4 | |||||||
| Graduation (mm) | 1.24 ~ 1.64 | ||||||||
| Seat Angle | Inlet (mm) | 44˚30"~45˚ | |||||||
| Graduation (mm) | 44˚30"~45˚ | ||||||||
| valve spring | |||||||||
| Free length (mm) | 45.35 | 369.8 (24.3 mm) | 196.2 (32.8 mm) | ||||||
| Deviation of the spring axis from the right angle (˚) | 0˚ | 1.5˚ | |||||||
| Cylinder block | |||||||||
| Type | IL4 | ||||||||
| Warping of gasket plane (mm) | Less than 0.05 | ||||||||
| Cylinder | |||||||||
| Inner diameter (mm) | 76.000 ~ 76.030 | ||||||||
| Piston | |||||||||
| Piston outer diameter (mm) | 75.97 ~75.99 | ||||||||
| Clearance between cylinder and piston (mm) | 0.020 ~ 0.040 | ||||||||
| Ring groove width | 1.23 ~ 1.25 | ||||||||
| 1.22 ~ 1.24 | |||||||||
| 2.01 ~ 2.03 | |||||||||
| Piston rings | |||||||||
| Side clearance | Groove of the 1st compression ring (mm) | 0.04 ~ 0.08 | |||||||
| Groove of the 2nd compression ring (mm) | 0.03 ~ 0.07 | ||||||||
| Oil scraper groove (mm) | 0.06 ~ 0.15 | ||||||||
| end clearance | Groove of the 1st compression ring (mm) | 0.15 ~ 0.3 | |||||||
| Groove of the 2nd compression ring (mm) | 0.30 ~ 0.50 | ||||||||
| Oil scraper groove (mm) | 0.20 ~ 0.70 | ||||||||
| piston pin | |||||||||
| Piston pin outer diameter (mm) | 18.995 ~ 19.000 | ||||||||
| Piston boss bore diameter (mm) | 19.010 ~ 19.015 | ||||||||
| Piston pin clearance (mm) | 0.010 ~ 0.020 | ||||||||
| Connecting Rod Inner Diameter (mm) | 18.972 ~ 18.984 | ||||||||
| Piston pin and connecting rod bore clearance (mm) | -0.028 ~ -0.011 | ||||||||
| connecting rod | |||||||||
| Connecting Rod Inner Diameter (mm) | 43.000 ~ 43.013 | ||||||||
| Connecting rod bearing oil clearance (mm) | 0.020 ~ 0.045 | ||||||||
| Side clearance (mm) | 0.05 ~ 0.3 | ||||||||
| Crankshaft | |||||||||
| Main journal outer diameter (mm) | |||||||||
| Outer diameter of crankpin (mm) | |||||||||
| Main bearing oil clearance (mm) | 1, 2, 4, 5 | 0.022 ~ 0.040 | |||||||
| 0.022 ~ 0.040 | |||||||||
| End play (mm) | 0.05 ~ 0.28 | ||||||||
| Flywheel | |||||||||
| Runout radial (mm) | 0.15 | ||||||||
| Lubrication system | |||||||||
| Safety valve opening pressure (kg/cm2) | 4.2±0.5 | ||||||||
| Balance spring | Free (mm) | ||||||||
| Engine oil | |||||||||
| Oil volume (total), l | 4.5 | ||||||||
| Oil type | SL/5W-30 | ||||||||
| Cooling system | |||||||||
| Coolant volume, l | 7.2 | ||||||||
| Thermostat | Type | Wax | |||||||
| Opening start temperature, 0 С | 88±1.5 | ||||||||
| Full opening temperature, 0 C | |||||||||
| Ignition system | |||||||||
| Ignition coil | Primary resistance | 740 MΩ 10% | |||||||
| Secondary winding resistance | 15 kOhm | ||||||||
| Spark plug | Type | RC10YC4 (champion) | |||||||
| Clearance (mm) | 1.0 ~ 1.1 | ||||||||
Left view of the engine GA16 VEGA TAGAZ
Tightening torques
| Components | Tightening torque, Nm | Quantity, pcs. |
| Cylinder block | ||
| Crankshaft bearing cap bolts | 50±2 + ∠30°±2° | |
| knock sensor bolt | 20±2 | |
| Camshaft Position Sensor Bolt | 8±2 | |
| Engine mounts | ||
| Bolts securing the engine bracket to the body | 49.0 ~ 63.7 | |
| Support bracket and motor insulation nuts | 68.6 ~ 93.2 | |
| Engine mounting bracket and engine support bracket bolts | 39.2 ~ 44.1 | |
| Connecting rod cap bolts | 25±1 + ∠90±2° | |
| flywheel bolts | 35±1 + ∠45±2° | |
| Drive Disc Bolts | 35±1 + ∠45±2° | |
| timing belt | ||
| Upper front timing belt cover bolts | 7±1 | |
| Timing belt lower front cover bolts | 7±1 | |
| Bolts of the rear lower left timing belt cover | 9±1 | |
| Bolts of the rear upper left timing belt cover | 9±1 | |
| Bolts of the rear upper right timing belt cover | 68±7 | |
| Camshaft sprocket bolt | 22±2 | |
| Timing Belt Tensioner Bolts | 50±3 | |
| Timing belt idler pulley bolt | 7±1 | |
| cylinder head | ||
| Spark plug cover bolts | 5±1 | |
| Cylinder head cover bolts | 9±1 | |
| Camshaft bearing cap bolts | 13±1 | |
| Cylinder head oil seal plug screws | 16±1 | |
| Automatic Timing Belt Tensioner Bolts | 9±1 | |
| Cylinder Head Bolt | 25±0.5 + ∠120±2˚ | |
| Cooling system | ||
| Water pump pulley bolts | 9±1 | |
| Water pump bolts | 20±2 | |
| Thermostat housing bolts | 20±2 | |
| Coolant Temperature Sensor Bolt | 25±3 | |
| Lubrication system | ||
| Oil filter | 15±2 | |
| Oil pump bolts | 9±1 | |
| Oil pan bolts | 9±1 | |
| Oil pan drain plug | 39±5 | |
| Oil strainer bolts | 9±1 | |
| Oil pressure switch | 40±3 | |
| Intake and exhaust systems | ||
| Nuts securing the intake manifold to the cylinder head | 22±2 | |
| Bolts securing the intake manifold to the cylinder head | 22±2 | |
| Upper Strut Bracket Bolts | 22±2 | M8:4 |
| Bottom Strut Bracket Bolts | 45±5 22±2 | M10: 1 piece M8: 1 piece |
| Intake manifold studs | ||
| Nuts securing the exhaust manifold to the cylinder head | 22±2 | |
| Exhaust manifold studs | ||
| Oxygen sensor (on the exhaust manifold) | 39±5 | |
| Bolts securing the exhaust manifold insulation | 22±2 | |
| Bolts and nuts for throttle body and expansion tank | 9±1 | Bolt: 2 Nut: 2 |
Attention: bolts tightened "with additional turn" (example: cylinder head bolts) must be replaced each time during disassembly / assembly.
Check for leaks
Most leaks are easy to spot on inspection and can be repaired by replacing failed components. In some cases, the leak is difficult to repair. The following are guidelines for detecting and repairing leaks.
Powder use
1. Clean the surface of the assembly that may be leaking from contamination.
2. Apply a powder (such as talc) to the surface.
3. Set the car in motion.
4. Inspect the knot. There should be a trace of flowing liquid on the powder.
Elimination of leaks
Once a leak has been located, the cause of the leak must be determined in order to properly repair. If you replace the gasket but do not straighten the seal lip, the leak will not stop. You need to correct the curvature of the edge. Check the following components and conditions before starting repairs:
Gaskets:
3. Incorrect tightening of fasteners, dirt on threads, damaged threads
4. Curvature of the edge or contact surface
5. Scratches, gouges, bulges and other defects of the contact surface
6. Worn or damaged gasket
7. Cracking or porosity of the gasket, installation of the wrong part
Seals:
1. Fluid level too high or pressure too high
2. The crankcase ventilation system does not work
3. Damage to the seal hole (scratches, bulges, chips)
4. Worn or damaged seal
5. Wrong installation
6. Part cracking
7. Damage to the surface of the shaft (scratches, chips, bulges)
8. Worn or incorrectly installed bearing has led to increased seal wear.
Poly V-belt check
Put a chalk mark on the V-ribbed belt. While cranking the engine, check the belt.
NOTE: If one of the defects below is found, replace the belt
1. Warping of the rubber at the base of the teeth
2. Dirt or gravel inclusions
3. Breaks in the tips of the teeth
4. Cord visible at the base of the teeth
5. Rupture of the cord on the sidewalls
6. Worn side cord
7. Removing the belt cover from the base
8. Cracks in teeth
9. Partial absence of teeth
10. Cracks through several teeth
11. Cracking on the back of the belt
V-ribbed drive belt
2. Remove the engine cover.
3. Turn the tensioner bolt (14 mm) clockwise with a wrench to remove the belt.
INTAKE AND EXHAUST SYSTEMS
LOCATION OF COMPONENTS
1. Intake manifold
2. Manifold air pressure and temperature sensor
3. Intake manifold seal
4. Intake manifold upper bracket
5. Hex flange bolt
6. Crankcase ventilation hose
7. Hose clamp
8. Breather hose
9. Hose clamp
10. Intake manifold lower bracket
11. Hex flange bolt
12. Throttle body
13. Throttle body seal
14. Threaded stud
15. Hex flange bolt
16. Hex nut
17. Hex flange bolt
18. Hex nut
19. Gasket exhaust manifold
20. Exhaust manifold
21. Hex nut
22. Front oxygen sensor
Intake manifold
1. Disconnect the negative battery terminal.
2. Remove the engine cover.
3. Disconnect the crankcase ventilation hose and breather hose.
4. Disconnect the throttle valve duct.
5. Disconnect the wiring connectors located on the cylinder head:
Injector connectors
Idle speed connector
Throttle position sensor connector
Manifold pressure sensor connector.
6. Disconnect the fuel supply pipe from the fuel rail.
7. Disconnect the accelerator cable from the throttle body.
8. Disconnect the cooling system hose from the throttle body.
9. Disconnect the upper bracket from the intake manifold. Bolt tightening torque: 22±2 Nm.
10. Disconnect the bottom bracket from the intake manifold. The tightening torque of the bolts on the intake manifold: 22±2 Nm. Tightening torque of the bolts on the cylinder block: 45±5 Nm.
11. Unscrew the fixing bolts and nuts of the intake manifold in the order shown in the figure. Tightening torque: 22±2 Nm.
12. Remove the intake manifold and gasket (seal).
13. Clear a contact surface of a collector and a head of the block of cylinders.
Installation is carried out in the reverse order of removal.
An exhaust manifold
1. Disconnect the negative battery terminal.
2. Disconnect the oxygen sensor connector.
3. Remove the exhaust manifold insulation. Tightening torque: 10-14 Nm.
4. Remove the exhaust manifold nuts (on the converter). Tightening torque: 40-50 Nm.
5. Unscrew the fixing nuts of the exhaust manifold in the order shown in the figure. Remove the manifold. Tightening torque: 22±2 Nm.
6. Remove the exhaust manifold gasket.
7. Clean the contact surfaces of the exhaust manifold and cylinder block.
Installation is carried out in the reverse order of removal.
Location of components
1. Top timing belt cover
2. Timing belt lower cover
3. Hex bolt
5. Bottom cover seal
6. Left lid support pad
7. Right lid support pad
8. Hex flange bolt
9. Bolt of fastening of the left basic pad
10. Sealing ring
11. Water pump impeller
12. Water pump housing
13. Water pump pulley hub
14. Hex flange bolt
15. Water pump pulley
16. Hex bolt
17. Engine mounting bracket
18. Hex flange bolt
19. Camshaft position sensor
20. Fastening the belt tensioner
21. Belt
22. Exhaust camshaft pulley
23. Hex flange bolt
24. Washer bolt gear exhaust camshaft
25. V-ribbed belt idler pulley
26. Crankshaft pulley bolt
28. Hex flange bolt
29. Timing belt pulley
30. Crankshaft gear
31. Hex flange bolt
32. Belt tensioner bushing
33. Belt tensioner spring
34. Timing belt tensioner
35. Strut tensioner
36. Hex flange bolt
37. Crankshaft pulley with vibration damper
LOCATION OF COMPONENTS
1. Cylinder head cover
2. Oil filler cap
3. Crankcase ventilation valve
4. Cylinder head cover gasket
5. Seals for candle wells
6. Hex flange bolt
7. Intake camshaft
8. Exhaust camshaft
9. Steel ball
10. Locating pin
11. Camshaft oil seal
12. Hex flange bolt
13. Chain tensioner
14. Camshaft chain
15. Camshaft sprocket
16. Camshaft key
17. Cylinder head
18. Camshaft rear bearing cap
19. Camshaft middle bearing cap
20. Front camshaft bearing cap
21. Screw cap
24. Plug, diameter 16
25. Heater pipe
26. Screw cap
27. Threaded stud
28. Thermostat
29. Thermostat housing
30. Hex flange bolt
31. Cylinder head gasket
32. Exhaust valve seat
33. Inlet valve seat
34. Plug, diameter 26
35. Cylinder head bolt washer
36. Cylinder head bolt
37. Engine coolant temperature sensor
38. Screw cap
39. Threaded stud
40. Spark plug
42. Exhaust valve
43. Inlet valve
44. Valve spring support washer
45. Valve stem seal
46. Valve spring
47. Valve spring plate
48. Valve cracker
49. Hydraulic pusher
Valve system
1. Remove the cylinder head assembly.
2. Lay it on a flat and clean surface.
3. Remove the hydraulic valve lifters.
4. Fix the valves with special tools, remove the valve cotters.
5. Remove the special tools, valve spring poppet and washer, valve spring, and valve seal.
6. Remove valves.
Examination:
1. Check the end of the valve stem for wear.
2. Check the valve spring retainer groove for wear and nicks.
3. Check the valve for burnout and cracks.
4. Check the valve stem for burrs and scratches.
5. Check that the valve stem is not bent or otherwise deformed.
6. Check the condition of the valve face. If the dents on the chamfer are so deep that a sharp corner is formed when they are removed by grinding, replace the valve.
7. Check the valve spring. If the spring is deformed, replace it.
8. Measure the height of the valve spring. If the spring height is not correct, replace the spring.
Installation
1. Install the valves, seals, support washer and valve spring plate in the cylinder head.
2. Compress the valve spring with the special tool, install the valve cotter.
3. Remove special tool, install hydraulic tappets.
4. Reinstall the cylinder head assembly.
Engine pistons Vega TAGAZ
2. Remove the timing belt and coolant pump assembly.
4. Remove the bolt, remove the crankshaft position sensor. Bolt tightening torque: 8±2 Nm.
5. Remove the bolts, remove the oil pan. Tightening torque: 9±1 Nm. NOTE: When assembling, make sure that the contact surfaces of the oil pan and cylinder block do not get dirt and dust, and also that the mounting surface of the oil pan is not deformed. Before installation, clean the surfaces of dirt and apply gasket sealant to them.
6. Unscrew the bolts, remove the oil supply tube.
7. Remove the bolts, remove the oil pump and gasket. Tightening torque: 9±1 Nm. NOTE: The seal and gasket are not re-installed. Replace them with new parts.
8. Move piston to bottom dead center
9. Put on a cover of a big head of a rod an adjusting tag.
10. Unscrew bolts, remove a cover of a rod and the bottom loose leaf of the bearing of a rod. Tightening torque: 25±1 Nm + ∠90±2°.
11. Remove the connecting rod upper bearing shell.
12. Remove the piston from the cylinder block.
Examination
1. Check the connecting rod for distortion. Replace bent connecting rod.
2. Check up a condition of bearings of a rod.
3. Check up on wear the bottom head of a rod.
4. Check up on presence of zadir the top head of a rod.
5. Check the crankshaft journal for wear.
6. Check the piston for cracks, scoring and wear.
7. Using a micrometer, check the piston for taper.
8. Check up correspondence of the piston and a rod.
9. Using a caliber and square, check the surface of the cylinder block for warpage.
10. Using a gauge, check the crankshaft bearing seat for concentricity and alignment. If the bearing bore is not correct, replace the cylinder block.
11. Check cylinder liner for wear, out-of-round, taper and burrs.
12. Check up smoothness of a surface of a sleeve of the cylinder. Grind the cylinder liner if necessary.
Installation:
1. Align the grooves on the piston and connecting rod so that the correct side of the piston assembly is facing towards the front of the engine.
2. Insert the piston pin guide into the piston and connecting rod.
3. Apply clean engine oil to the piston pin.
4. Insert the piston pin from the opposite side of the piston.
5. When installing the piston pin, special tools are used.
6. Select a set of new piston rings.
7. Using a gauge, measure the piston ring clearance.
8. If the ring gap is less than normal, increase it by carefully grinding off the excess ring.
9. Using a gauge, measure the backlash of the piston ring.
10. If the thickness of the piston ring is too high, select another ring.
11. If it is not possible to find a ring that meets the requirements, bring the existing ring to the desired parameters with sandpaper.
12. Use a ring expander to install piston rings. Do not expand rings more than required for installation.
13. Install the oil scraper ring components, the second compression ring and the first compression ring so that the location of their locks corresponds to the diagram shown in the figure.
14. Apply clean engine oil to the cylinder walls and piston.
15. Using a ring compressor and a wooden drift, install the piston. Make sure that the crankshaft journal is not damaged during installation.
16. Establish covers and bearings of a rod.
17. Using special tools (plastigage), measure the clearances of the connecting rod bearings.
18. Cut off pieces of plastigage, the length of which is equal to the width of the connecting rod bearing. Place them between the connecting rod journals and connecting rod bearings.
19. Install the connecting rod bearing caps.
Bolt tightening torque: 24~26 Nm + ∠90°. NOTE: Connecting rod bearing oil clearance: 0.020 - 0.045 mm.
20. Install the oil pump with a new gasket, tighten the bolts.
21. Install the oil feed tube.
22. Install the oil pan, tighten the bolts. Tightening torque: 8 - 10 Nm.
23. Establish a head of the block of cylinders in gathering with an inlet and final manifold.
Crankshaft
1. Remove the cylinder head along with the intake and exhaust manifolds.
2. Remove the timing belt and water pump assembly.
3. Unscrew bolts, remove a flywheel. Tightening torque: 35±1 Nm + ∠45±2°.
4. Remove the pistons from the cylinder block.
5. Note the arrangement of the crankshaft bearing caps.
6. Unscrew the bolts of the crankshaft bearing caps. Tightening torque: 8 - 10 Nm.
7. Remove the bearing caps and the lower parts of the crankshaft bearings.
8. Remove the crankshaft.
9. Remove the upper parts of the crankshaft bearings.
10. If necessary, clean all parts from contamination.
Assembly
1. Apply engine oil to the crankshaft bearings.
2. Establish in the block of cylinders the top parts of bearings.
3. Install the crankshaft.
4. Install the lower parts of the bearings into the bearing caps.
5. Install the bearings, check the crankshaft end play.
6. Check that the play is correct.
7. Check up a deviation from a circle of an average neck of a crankshaft at established forward and back bearings.
NOTE: Before using plastigage, apply a light coat of lubricant to the crankshaft journals and bearings to prevent tearing of the plastigage strips when removing the bearings.
8. Using plastigage, check the crankshaft bearing clearances.
9. Cut off pieces of plastigage that are as long as the width of the bearing. Place them between the journals and bearings parallel to the axis.
10. Install the crankshaft bearing caps.
Bolt tightening torque: 48~52 Nm + ∠30°.
11. Unscrew bolts, remove covers of bearings.
12. Using a ruler, measure the thickness of the flattened plastigage.
13. Make sure the clearance is correct.
14. Apply a drop of sealant to the grooves of the crankshaft bearing caps.
15. Establish in the block of cylinders of a cover of bearings of the crankshaft.
16. Fix covers with new bolts. Tightening torque: 48~52 Nm + ∠30°.
17. Oil clearance is 0.022 - 0.040 mm.
18. Using a mandrel, install a new crankshaft rear oil seal.
19. Install the pistons.
20. Install the flywheel, tighten the bolts.
21. Install the timing belt and water pump.
22. Establish a head of the block of cylinders in gathering with an inlet and final manifold.
COOLING SYSTEM
Radiator
The car is equipped with a lightweight aluminum radiator with a tubular-lamellar core. There are plastic reservoirs on the top and bottom of the radiator core. On vehicles with automatic transmission, the transmission fluid coolant circuit runs through the right reservoir.
The radiator has a coolant drain valve. To drain the fluid from the system, open the valve and the cover of the expansion tank.
Expansion tank
The reservoir is a clear plastic reservoir, similar to the windshield washer fluid reservoir. It is connected to the radiator and engine cooling system by means of hoses. While the car is moving, the fluid in the system heats up and increases in volume. Part of the liquid is forced out of the radiator into the tank. Also, air enters the tank and enters the radiator and circuit. After the engine is stopped, the liquid cools and decreases in volume, after which the liquid from the tank returns to the radiator and cooling circuit. This allows you to maintain the right level of liquid in the radiator, and also increases the efficiency of the system. On a cold engine, the fluid level should be between the MIN and MAX marks on the tank wall.
Water pump
The centrifugal pump is driven by a V-ribbed belt and consists of an impeller, a seal, a bearing, a pulley hub and a pulley. The pump is mounted on the front of the engine with a transverse arrangement and is driven by a timing belt. The impeller bearing is completely sealed. The pump cannot be dismantled and is completely replaced as one piece.
Thermostat
The wax-filled thermostat controls the distribution of the engine coolant flow through the cooling circuit. The thermostat in the housing is mounted on the front of the cylinder head. To speed up heating and regulate the temperature of the liquid, the thermostat does not allow liquid from the circuit to enter the radiator. If the fluid temperature is below a certain value, the thermostat remains closed. In this case, the liquid can only pass through the heater core, quickly and evenly heating it. When the engine warms up, the thermostat opens. The liquid from the circuit enters the radiator, where it is cooled. This operation of the thermostat allows you to maintain the temperature of the engine at an acceptable level.
The wax filler of the thermostat is placed in a sealed metal case. Wax expands when heated and contracts when cooled.
While driving, the engine coolant temperature rises. When the temperature reaches a certain value, the wax element of the thermostat expands and transfers pressure to the metal housing, which causes the valve to open. The fluid passes through the circuit, cooling the engine. As the wax contracts, the spring closes the valve. Thermostat opening start temperature: 88°C. Thermostat full opening temperature: 100°C. Thermostat closing temperature: 83°C.
SPECIFICATIONS
| Options | Values | |
| Cooling system | With forced circulation | |
| refrigerant | Volume | 7.2 l |
| Thermostat | Type | With wax filling |
| Opening start temperature | 88± 1.5 0 С | |
| Full opening temperature | 100 0 С | |
| Full closing temperature | 83 0 С | |
| Stroke (full opening) | 8 mm | |
| Cooling Fan | Type | Electric |
| Number of blades | ||
| Low speed start temperature | 97.5°C | |
| Low speed shutdown temperature | 95.25°C | |
| High speed start temperature | 101.25°C | |
| High speed shutdown temperature | 99°C | |
| Expansion tank | Discharge valve opening pressure | 1.4 kg/cm2 |
| Vacuum valve opening pressure | 0.1 kg/cm2 | |
| Pump | Type | Centrifugal |
| Number of impeller blades |
DIAGNOSTICS
Thermostat check
