Maintenance Manual for J2 Sedan
Mechanical Part of Engine
102
Section III Cooling System of Engine
I.
Cooling Circuit
1. Cooling Circuit Diagram
Cooling circuit diagram
2. Principle Diagram of Cooling
Basic diagram of cooling
Radiator
Expansion
tank
Thermostat
Thermostat
casing
Water pump
Cylinder
body
Cylinder
cover
Thermostat off
Thermostat on
W
ar
m
ai
r
h
e
a
t
ex
c
h
an
g
er
A
i
r
t
h
r
o
t
t
l
e
b
o
d
y
F
i
x
i
n
g
b
o
l
t
s
o
f
c
o
o
l
a
n
t
p
u
m
p
p
u
l
l
e
y
C
o
o
l
a
n
t
p
u
m
p
p
u
l
l
e
r
B
o
l
t
s
f
o
r
w
a
t
e
r
p
u
m
p
W
a
t
e
r
p
u
m
p
a
s
s
e
m
b
l
y
S
e
a
l
r
i
n
g
o
f
w
a
t
e
r
p
u
m
p
H
e
a
t
e
r
w
a
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r
r
e
t
u
r
n
i
n
g
p
i
p
e
b
o
l
t
s
I
Heater water returning pipe bolts II
Heater water returning pipe
Spacer of heater water returning pipe
Thermost subassembly
Water pump feeder
Water pump inlet bolt
T
h
r
o
t
t
l
e
p
r
e
-
h
e
a
t
i
n
g
o
u
t
l
e
t
h
o
s
e
T
h
r
o
t
t
l
e
p
r
e
-
h
e
a
t
i
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t
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t
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o
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e
