Radiator Assembly; Cooling System Inspection; Radiator Removal/Installation - Polaris 1999 Sportsman 400 Service Manual

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COOLING SYSTEMS
RADIATOR ASSEMBLY (1996·1999 MODELS)
205
1. Nut
2. Washer
3. Fan motor
4.
Mounting bracket
5.
Screw
6.
Fan
blade
7.
Upper hose
8.
Hose
clamp
9.
Thermal
switch
10. Radiator cap
11. Radiator
12. Drain valve
13. Spacer
14. Special
bolt
15.
Lower
hose
6
7
~
.. .
8
~
.:
~
15
8
,*
141~
COO LI NG
SYSTEM INSPECTION
The
coo
ling system
is
equipped
with
a
coo lant
reservo
ir (Figure
22)
and
the coo
lanl
level
can
be
checke d without removing the
radiato r
cap.
Coo
lant
is usually
added
10
the coo
lant
reservoir.
If
the
cool-
ing
system
requi res frequem refillin g,
there
is a leak
in
the
system.
If the
engine overheats, allow the
engine
to coo
l
completely, then
remove the
radiator cap
(F
igu re
21,
typical)
and
check the Iluid level
in
thc
rad
iator.
The
radiator should
always
be
completely
full.
If
the
level ofIluid
in the radiato
r
is
low,
refer
10
Chap-
ter
Three for
filling
and
bleeding air
from thc sys-
tem
.
To
pressure
check
the
cooling
system.
refer to
Coo/ani
Inspection in
Chapter
Three.
RADIATOR
RemO\'3
Ulnstallation
(1996-1999 Mod
els)
Refer
to
Figure 23.
I.
Remove
the fronl fender
as
described in
Chapter
Fifteen.
2.
Remove the front
skid
plate, bumper and
radia-
lor
shield as describ ed
in Chapter
Fifteen.
3.
Drain
the
coo
ling
system as described
in Chapter
Three.
4.
Disconnect
the
negative battery lead
as
de-
scribed in
Chapter
Three
.
5. Disconnect
the
elec trical
connector (A.
Figure
24)
from
the
temperature
sensor swi
tch
on
the
top
the
radiator.
NOTE
Even though the
cooling
syst em has
been
dra
ined.
there will be
so
me
re-
sidual coolant remaining
ill
the radia-
tor
Gild
hoses .
Place a drain pan
undereach hose as
it
is
removed.
Also
have shop rag
a
ll
hand
to
wipe lip
an)'
sp illed coolant.
6.
Loosen
the
screws on
both
hose
clamps
(B,
Fig-
ure 24) of
both
upper
hoses.
Move the
clamps
back
onto
the
hoses
and ofT of the
radiator
fillings.
7.
Remo ve the bolts
(Figu
re 25)
securing the radia-
tor to
the
frame.
Account for
the
spacer
(C.
Figur
e

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