ENGINE
WATER
PUMP
The
water
pump
is
a
centrifugal
type
water
pump
with
an
aluminum
die
cast
pump
body
The
volute
chamber
is
built
into
the
front
cover
assembly
and
a
high
pressure
sealing
mechanism
is
adopted
to
prevent
the
water
leakage
and
noise
completely
Note
The
water
pump
must
not
be
disassembled
since
the
bearings
are
shrinkage
fitted
to
their
bores
If
any
part
of
water
pump
is
found
defective
replace
pump
assembly
o
C0026
Fig
CO
2
Water
pump
and
front
cover
Removal
Fig
CO
3
Water
pump
removal
Drain
cooling
water
completely
2
Take
the
fan
belt
off
the
pulley
3
Remove
fan
and
pulley
4
Remove
the
water
pump
THERMOSTAT
A
pellet
type
thermostat
is
used
in
the
wa
ter
outlet
passage
to
control
the
flow
of
coolant
providing
fast
engine
warm
up
and
regulating
coolant
temperature
A
wax
pellet
in
the
thermostat
expands
when
heated
and
contracts
when
cooled
The
pellet
is
connected
through
a
piston
to
a
valve
and
when
the
peUet
is
heated
pressure
is
exerted
against
a
rubber
diaphragm
and
the
valve
opens
As
the
pellet
is
cooled
the
contraction
allows
the
spring
to
close
the
valve
Removal
Drain
cooling
water
2
Remove
radiator
hose
3
Remove
water
outlet
elbow
Then
take
out
the
thermostat
11
I
Thermostat
12
Water
outlet
Fig
CO
4
Thermostat
removal
Inspection
To
test
the
thermostat
for
proper
operating
tern
perature
submerge
the
unit
in
a
container
of
water
Heat
the
water
and
observe
the
temperature
CO
2
