Chery A11. Manual — part 25
CAC Gasoline Engine Maintenance And Servicing Manual
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3) The removal and installation of thermostat seat with thermostat assembly
——Loosen three M6×40 bolts and remove them
——Remove thermostat seat with thermostat assembly
——Pry out spring clip by chisel or screwdriver
——Take out the thermostat
——Take out sealing gasket
——Remove sealing gasket of thermostat seat
Measure the opening temperature of thermostat in hot water.
Fig.96
Fig. 97
Fig. 98
Fig. 99
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Assembly:
——Clip the thermostat seat, and put the rubber seal ring into the thermostat hole.
——Install the thermostat(with spring outward)
——Install spring clip, ensure that the clip is clipped in the thermostat seat groove.
——Install the sealing gasket of the new thermostat seat on the thermostat assembly with a bolt.
——Install the thermostat together with thermostat assembly into the rear end hole of cylinder head. Finger
screw in 3 bolts and tighten to 9-12Nm.
——Tighten the hex head plug with the sealing gasket on . tightening torque is 38-42Nm.
——For the engine equipped with electrical heater ,install air intake preheating switch .tightening torque is
38-42Nm.
3. removal and assembly of the water temperature sensor.
Removal:
——Remove the water temperature sensor(at the exhaust side , under the rear lug).
Assembly:
——Before installation, apply the lotite sealant 243 onto the bolt threads .finger screw in and tighten to
7.0-10.0Nm .
【15】: The intake and exhaust system of the engine.
1. Description for the intake and exhaust system of carburetor engine.
The intake system of Carburetor Engine 478 and 480 includes: air filter, Intake hose, Guide cover, Carburetor,
Intake hose, Intake air preheating hose of Positive Crankcase Ventilation（PCV）, and so on.
——air filter type is 1GD129607G, and its basic parameters are as the following:
Filtering area: 100cm2 nominal air flow(L): 600±150
filtering efficiency: ≥99% filtering resistance: 2kPa
thermostat
Sealing gasket
Overflow pipe
Drainage pipe
Sealing gasket
Small recircula-
ting pipe
Plug screw
Spring clip
Sealing gasket
Tighten torque
Fig.100
Temperature seat assembly
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——The air filter is equipped with a intake air temperature controller. When the temperature is low, the hot air
intake valve controlled by the temperature controller will open and the hot air, flowing by the exhaust manifold,
will be directed into the air filter from the intake preheating hose to supply more hot air and facilitate the fuel
atomization during cold winter. As temperature is high , valve is shutted off and the hot air is not permitted to
enter the air filter.
——Carburetor(see Fuel System)
The exhaust system of the carburetor engine 478 and 480 includes Exhaust Manifold, Heat Insulation
Cover, Exhaust Hose, Front Muffler, Rear Muffler.
2. Description for the Exhaust System of Engine 2.480M:
The Intake System of Engine 480M includes: air filter, Intake Hose, Guide Cover, Throttle Valve, Intake
Manifold, Intake air preheating hose of Positive Crankcase Ventilation（PCV）and so on.
——Air filter type is 1GD 129 607G, and its basic parameters are as follows:
Filtering area: 100cm2 nominal air flow(L): 600±150
filtering efficiency: ≥99% filtering resistance: 2kPa
Fig. 101 intake and exhaust system arrangement of carburetor engine
Intake hose
guide cover
carburetor
Air filter
Intake preheat hose
exhaust manifold
intake manifold
Exhaust hose
engine
front sound absorber back sound absorber
Fig.102 intake and exhaust system schematic drawing of engine 480M
3 way catalyst
front sound absorber back sound absorber
flexible hose
Oxygen sensor
Exhaust hose
engine
Intake hose
Air filter
guide cover
throttle valve
Intake preheat hose
insulating
cover
cylinder
cap cover
intake manifold
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——The air filter is equipped with a intake air temperature controller. When the temperature is low, the hot air
intake valve controlled by the temperature controller will open and the hot air, flowing by the exhaust manifold,
will be directed into the air filter from the intake preheating hose to supply more hot air and facilitate the fuel
atomization during cold winter. As temperature is high , valve is shutted off and the hot air is not permitted to
enter the air filter.
——See “CAC480M Engine’s single port injection system” to know about the throttle valve.
The exhaust system of Engine 480M includes Exhaust Manifold, Heat Insulation Cover, Exhaust Hose,
Oxygen Sensor, Flexible Hose, Three-Way Catalyst Converter, Front Muffler, Rear Muffler.
Removal and assembly of the Intake Manifold Assembly and Front lifting Lug:
1. The Intake Manifold Assembly of the Carburetor Engine.
2. Description for the Intake Manifold Assembly of Engine 480M:
The Intake Manifold Assembly includes: Water Hose, Vacuum Fitting, Water Temperature Gauge Sensor,
and Electric Heater. The water hose fitting is connected to the water hose of the throttle valve body. The left
vacuum fitting is connected to the PCV valve, and the right vacuum fitting is connected to the absolute
pressure sensor. And the vacuum fitting from the intake manifold’s branch is applied on the entire brake
system, the water temperature sensor is connected to ECU .
Fig 103 composing of intake manifold assembly of carburetor engine
Vacuum fitting (for brake boost) absolute pressure sensor connecting
pipe connector (connect to 3 way hose)
3/8” hexagonal cone plug screw
drainage
connector
intake manifold
Fig.104 composing of intake manifold assemble of electric injection engine
Vacuum fitting (for brake boost)
Vacuum fitting (for PCV valve)
absolute pressure sensor connecting pipe connector
Install water temperature
sensor here
intake manifold
drainage hose
connector
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