Chery SQR 7160 sedan. Manual — part 24
CAC Gasoline Engine Maintenance And Servicing Manual
14
Engine structural features
1.Cylinder block：Made from gray cast iron. Without bibcock. Without cylinder liner.5 main
bearing seats. Main Intermediate bearing anti-thrust. Main bearing caps are retained by
spigot. Main bearing bolts of 12.9 grade.
2.Cylinder head：Made from aluminum alloy. Intake and exhaust valve seats and valve guides
strutting.6 camshaft supports. Without camshaft bushing. with fuel pump, Push rod and
distributor，Thermo-sister in cylinder head for Carburetor engine. with thermo-sister in
cylinder head for Electric control engine. Cylinder cover bolts of 10.9 grade.
3.Piston：made from eutectic aluminum silicon. Anti-expansion steel-strutted skirt. Ellipse head
and skirt. Cone head. Barrel skirt.
4.Piston ring：First compression ring of ductile cast iron. With excircle sprayed molybdenum.
Ground ring with barrel surface.
Second compression ring is of twist type. made from alloy cast iron.
Steel strip combination oil ring. With scape blade excircle chroming.
5.Piston pin：Low carbon steel. Surface carbonizing and quenching. Semi-floating
structure(Interference fit with small end of connecting rod. Clearance fit with piston pin hole.
6.Connecting rod：Forged steel. Flat insection. Without small end bushing. Connecting rod stem
and cover are retained by 2 spring dowels. Piston and cylinder block is lubricated by oil spray
from connecting rod bearing bore drill. Connecting rod bolts of 12.9 grade.
7.Crankshaft：4 balance weight. Ductalloy. Normalizing treatment.
8.Bearing bushing：Connecting rod bushing,Main bearing bushings and thrust washers are all
made of tin&aluminium duplex metal. Two pieces of thrust washer. They are mounted in
cylinder block.
9.Flywheel：It is made of ductalloy. May be fitted with 190 and 210 clutch. Casted with
crankshaft speed signal disk.
10.Camshaft：It is made of alloy cast iron. Cam and fuel pump eccentric cam high frequency
quenching treatment. 5 supports. Camshaft thrust spacer is made from low carbon steel.
Surface carbonitriding .
11.Rocker arm：Low carbon steel、Stamping. Surface carbonitriding. Rocker arm stud of 10.9
grade.
12.Hydraulic lifting rod：The surface contacting cam is quenched. The contact face with rocker
arm is made of low carbon steel. Surface carbonitriding，Both contact face are circular-arc.
13.Intake valve seat：It is made of alloy cast iron.
14.Exhaust valve seat：Iron base powder metallurgy. Quench treatment.
15.Valve guide：It is made from alloy cast iron.
16.Valve： Intake valve：Made from 4Cr9Si2. With smaller end of conical surface
quenched，With conical surface angle 45°.With large nest seat in the valve head for
hemispherical combustion chamber.
Exhaust valve：4Cr9Si2-21-4N. With conical surface angle 45°.With smaller end
quenched.
17.Gear：Made from iron base powder metallurgy.
18.Timing belt：Made from cyaniding butadiene-acrylonitrile rubber.
CAC Gasoline Engine Maintenance And Servicing Manual
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19.Intake manifold：Made from Aluminum alloy. With mixture warm upped by water jacket.
Electric heated intake manifold is optional.
20.Exhaust manifold：Made from ductalloy or black cast iron.
21.Oil pan：Stamping ，Low carbon steel. Oil pool is in the front of cylinder block.
22.Oil pump：Rotor type. Case is made of aluminum alloy.
Speed ratio 1∶1，With pressure relief valve in oil pump.
23.Engine oil filter：Full flows type spinning filter. With by-pass valve in it.
24.Fuel pump：Diaphragm type. Driven by upper camshaft eccentric cam. Electric fuel pump for
electric control engine. In fuel tank.
25.Push rod：Made from low alloy steel，Carbonization & quench treatment. Only applied for
carburetor engine.
26.Water pump：Centrifugal type，Cast iron impeller，Aluminum alloy case，Driven by timing
belt through gear.
Speed ratio 1.053∶1.
27.Thermosister：Wax type.
28.Thermosister seat：Aluminum alloy，With overflow valve，overflow pipe and
micro-circulation tube.
29.Carburetor：Pierbort 2E3 carburetor. Throttle valve body for 480M 30MM12 Imported
part.
30.Spark plug：K7RTC
31.Non-contact distributor：
Driven by the rear end of camshaft，
Type is FDW451& JFD459.Only
applied for carburetor engine.
32.Ignition controller：Type are ZJ5701—HG & KH—3A.Only applied for carburetor engine.
33.Generator：14V 90A，Type are JFZ1913—4 or JFZ1813—2B.
34.Starter：12V 0.95KW QDY1258 or SD6RA78.
35.ECU：I.A.W.6F Imported Only for 480M engine.
CAC Gasoline Engine Maintenance And Servicing Manual
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Engine maintenance：
Daily maintenance
—— Check lubricant level
—— Check coolant level
—— Check bolt for loosing
—— Check for leaking (oil, water, air)
Per8000km
—— Replace engine oil and oil filter
—— Clean air filter，check air intake tube for cracking
—— Check PCV valve
—— Check spark plugs
Per16000km
—— Check accessories drive belt
—— Check timing belt and tension pulley
—— Check radiator and hoses for leaking
Per30000km
—— Replace fuel filter
Per32000km
—— Replace spark plug
—— Check high-tension wire
Per45000km
—— Check lambda sensor function
Per48000km —— Replace corrosion preventive coolant and clean cooling system
—— Replace air filter
Per64000km
—— Replace timing belt
CAC Gasoline Engine Maintenance And Servicing Manual
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CAC478、480Contents and intervals for Constant maintenance
×1000km
8
16
24
30
32
45
48
60
64
Replace engine oil
☆
☆
☆
☆
☆
☆
Replace oil filter
☆
☆
☆
☆
☆
☆
Clean air filter core
☆
☆
☆
☆
☆
☆
Check spark plugs
☆
☆
☆
☆
☆
☆
Replace air filter core and
clean case
☆
Check accessory driving
belts
☆
☆
☆
☆
Check radiator and hoses for
leaking
☆
☆
☆
☆
Replace spark plugs
☆
☆
Replace timing belt
☆
Replace fuel filter
☆
☆
Check high-tension wires
☆
☆
Check
lambda
sensor
function
☆
Check
timing
belt
and
tension pulley
☆
☆
☆
☆
Check PCV valve
☆
☆
☆
☆
☆
☆
☆
For severe conditions of application, maintenance intervals should be shortened according to
specific conditions.
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