JAC S2. Engine. Service Manual — part 8
Engine cooling system
Engine intake system 91
III、Expansion kettle assembly
(I)Disassembly
1. Open engine cover
2. Disconnect battery cathode cable, refer to battery cable disconnect and connect
3. Disassembly engine left front cover, refer to engine front cover
4. Disassembly
expansion kettle assembly
1). Disconnect radiator venting hose and expansion
kettle assembly
2). Disassembly fixing bolts on top of expansion kettle.
3). Disassembly fixing bolts at bottom of expansion kettle,
remove expansion kettle assembly.
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Engine cooling system
Engine intake system 92
(II)Installation
1. Install expansion kettle assembly
1). Install expansion kettle assembly to fan, tighten
the fixing bolts at the bottom.
2). Install the fixing bolts on top of expansion kettle
3). Connect radiator venting hose to expansion
kettle assembly.
2. Install engine left front cover
3. Connect battery cathode cable
4. Close engine cover
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Engine cooling system
Engine intake system 93
IV、Replace cooling liquid
(I)Disassembly
1. Open engine cover
2. Disconnect battery cathode cable, refer to battery cable disconnect and connect
3. Disassemble engine left front cover, refer to engine front cover
4. Disassemble engine right front cover, refer to engine front cover
5. Drain cooling liquid
1). Open radiator cover.
△
Caution
To avoid scald, please do not replace cooling liquid
while engine temperature is too high.
△
Caution thick cloth wrap over radiator, loosen carefully.
Release pressure inside radiator first, then open
fully the cap.
△
Caution Please be careful not to let engine cooling liquid spill to
driving belt.
2). Open the draining plug at the bottom of radiator, collect the
released engine cooling liquid.
3). Check if there is rust or color change in the released engine
cooling liquid.
(II)Installation
1. Fill cooling liquid
1). Tighten draining plug of radiator.
tightening torque:
2N·
m
△
Caution
please clean the draining plug and install new “O”ring
2). Fill cooling liquid to radiator until the regulated level, fill it
slowly, so air in the system can be drained out gradually.
3). Press intake and exhaust pipe of radiator with hands many times, check
the level of cooling liquid.
△Caution connect again if engine cooling liquid spills
out of warm braw exhaust hose and continue to fill engine
cooling liquid,
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Engine cooling system
Engine intake system 94
4). Install radiator cap.
2. Connect battery
cathode cable
3. Install engine left front
cover
4. Install engine left front
cover
5. Close engine cover
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Engine cooling system
Engine intake system 95
V、Radiator venting hose
(I)Disassembly
1. Open engine cover
2. Disconnect battery cathode cable, refer to battery cable disconnect and connect
3. Disassemble radiator venting hose
1). Disconnect radiator venting hose and expansion
kettle.
2). Disconnect radiator venting hose and radiator cap, release
radiator venting hose.
(II)Installation
1. Install radiator venting hose
1). Connect radiator venting hose and radiator cap.
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Engine cooling system
Engine intake system 96
2). Connect radiator venting hose and expansion kettle.
2. Connect battery cathode
cable
3. Close engine cover
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Engine cooling system
Engine intake system 97
VI、Radiator fan assembly
(I)Disassembly
1. Open engine cover
2. Disconnect battery cathode cable, refer to battery cable disconnect and connect
3. Drain engine coolant, refer to the replacement of coolant
4. Disassemble radiator venting hose, refer to radiator venting hose
5. Disassemble engine left front cover, refer to engine cover
6. Disassemble engine right front cover, refer to engine cover
7. Disassemble expansion kettle assembly, refer to expansion kettle assembly
8. Disassemble radiator fan assembly
1). Disconnect the harness connector of radiator fan assembly.
2). Disconnect radiator intake hose and radiator fan
assembly.
3). Disconnect radiator exhaust hose and radiator fan
assembly.
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Engine cooling system
Engine intake system 98
4). Disassemble the fixing bolts of radiator fan assembly
5). Remove radiator fan assembly from bottom of vehicle.
△
Caution
Need to move radiator to the direction of engine
compartment some distance to remove fan
assembly.
(II)Check radiator fan assembly
1.
Check radiator fan assembly
1). Check if there is crack or abnormal bending of radiator fan. If
yes, please replace radiator fan.
2). Connect power at the terminal of motor, check the rotating condition of fan alternator.
3). Check if there is abnormal noise while alternator working.
(III)Installation
1. Install radiator fan assembly
1). Install radiator fan assembly into installation hole, tighten 2 fixing
bolts
Tightening torque
9±0.5N·
m
2). Connect radiator water exhaust pipe and
radiator fan assembly
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Engine cooling system
Engine intake system 99
3). Connect radiator water intake pipe and radiator fan assembly
4). Connect harness connector of radiator
fan assembly.
2. Install expansion kettle assembly
3. Install engine left front cover
4. Install engine right front cover
5. Install radiator venting hose
6. Fill engine coolant
7. Connect battery cathode cable
8. Close engine cover
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Engine cooling system
Engine intake system 100
VII、Radiator assembly
(I)Disassembly
1. Open engine cover
2. Disconnect battery cathode cable, refer to battery cable disconnect and connect
3. Drain engine coolant, refer to replacement of coolant
4. Disassemble left and right front fog assembly, refer to front fog assembly
5. Disassemble left and right DRL assembly, refer to DRL assembly
6. Disassemble upper cover of front bumper, refer to upper cover of front bumper
7. Disassemble front bumper assembly, refer to front bumper
8. Disassemble radiator venting hose, refer to radiator venting hose
9. Disassemble engine left front cover, refer to engine cover
10. Disassemble engine right front cover, refer to engine cover
11. Disassemble expansion kettle assembly, refer to expansion kettle assembly
12. Disassemble radiator fan assembly, refer to radiator fan assembly
13. Disassemble radiator assembly
1). Disassemble fixing bolts on both
sides of radiator
2). Remove radiator assembly
(II)Check
1. Check radiator assembly
1). Check if there is mud or block in radiator. If necessary, clean
radiator surface according to the following method.
△
Caution
Be careful not to bend or damage
radiator core
△
Caution
use adhesive plaster to wrap harness and electric connector in case of water gets in.
2). Water hose faces radiator vertically and wash its back surface of radiator core from up to bottom.
3). Wash each surface of radiator core every 1 min.
4). Stop washing if no dirt is washed out from radiator.
5). Use compressed air blow the back surface of radiator core vertically facing down.
6). Use compressed air below 490 kPa, and keep the distance of
more than 30cm.
7).Use compressed air blow each surface of radiator core every 1
min, until there is no water blown out.
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Engine cooling system
Engine intake system 101
(III)Installation
1.
Install radiator assembly
1). Install radiator assembly into installation hole, tighten 2 fixing
bolts.
2. Install radiator fan assembly
3. Install expansion kettle
assembly
4. Install engine left front cover
shield
5. Install engine right front cover
shield
6. Install radiator venting hose
7. Install front bumper assembly
8. Install upper cover of front
bumper
9. Install left and right DRL
assembly
10. Install left and right fog lights
assembly
11. Fill engine coolant
12. Connect battery cathode cable
13. Close engine cover
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Engine cooling system
Engine intake system 102
VIII、Water exhaust pipe and pipe clamp assembly
(I)Disassembly
1. Open engine cover
2. Disconnect battery cathode cable, refer to battery cable disconnect
and connect
3. Disassemble air filter assembly, refer to air filter assembly
4.
Disassemble electronic throttle valve, refer to
electronic throttle valve
5.
Disassemble intake manifold, refer to intake
manifold
6. Disassemble engine left front cover, refer to engine cover
7. Disassemble engine right front cover, refer to engine cover
8. Disassemble water exhaust pipe and pipe clamp assembly
1). Release hoop, disconnect radiator water exhaust pipe and
radiator.
2). Release hoop, disconnect radiator water exhaust pipe and
water pump intake entrance, remove water exhaust pipe and
pipe clamp assembly.
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Engine cooling system
Engine intake system 103
(II)Installation
1. Install water exhaust pipe and pipe clamp assembly
1). Connect radiator water exhaust pipe and water pump intake
entrance
2). Connect radiator water exhaust pipe and radiator assembly
2. Install air intake
manifold
3. Install electronic
throttle valve
4. Install air filter
5. Install engine left
cover shield
6. Install engine right
cover shield
7. Connect battery
cathode cable
8. Close engine cover
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Engine cooling system
Engine intake system 104
IX、Water intake pipe and pipe clamp assembly
(I)Disassembly
1. Open engine cover
2. Disassemble
water intake pipe and pipe clamp assembly
1). Release hoop, disconnect radiator water exhaust pipe and radiator
assembly.
2). Release hoop, disconnect radiator water intake pipe and
cylinder cover, remove water intake pipe.
(II)Installation
1. Install water intake pipe and pipe clamp assembly
1). Connect radiator water intake pipe and cylinder cover.
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Engine cooling system
Engine intake system 105
2). Connect radiator water intake pipe and radiator fan assembly
2. Close engine cover
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Engine cooling system
Engine intake system 106
X、inlet of water pump
(I)Disassembly
1. Open engine cover
2. Disconnect battery cathode cable, refer to battery cable disconnect and connect
3. Drain coolant, refer to replace coolant
4.
Disassemble
inlet of water pump
1). Disconnect
inlet of water pump and radiator
water exhaust pipe
2). Disconnect
2 fixing bolts of
inlet of water pump ,
remove inlet of water pump.
5.
Disassemble thermostat
1). Take out
thermostat from water pump
(II)Check
1. Check thermostat
1). Check open degree of thermostat at normal temperature.
The opening temperature of thermostat is: 82 ℃ (initial
open)
,95 ℃ (full open)
2). The closing temperature of thermostat
:>77 ℃
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