Radiator/Fan; Hoses/Thermostat - Arctic Cat DVX 400 2008 Service Manual

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Radiator/Fan

KEY
1. Radiator
2. Cover
3. Cap Screw
4. Spacer
5. Cushion
6. Fan Switch
7. O-Ring
8. Fan
9. Nut
10. Cap Screw
11. Temperature Switch
12. Fan Boot
REMOVING
1. Drain the coolant from the engine; then remove
the seat and body (see Section 8).
2. Disconnect the negative battery cable; then dis-
connect the positive cable.
3. Remove the front bumper (see Section 8).
4. Remove the upper and lower coolant hoses.
5. Remove the cap screws and nuts securing the radi-
ator to the frame.
6. Disconnect the fan wiring from the main wiring
harness; then remove the radiator/fan assembly
and account for the cushions and spacers.
7. Remove the fan assembly from the radiator.
CLEANING AND INSPECTING
NOTE: Whenever a part is worn excessively,
cracked, or damaged in any way, replacement is
necessary.
1. Flush the radiator with water to remove any con-
taminants.
2. Inspect the radiator for leaks and damage.
3. Inspect all hoses for cracks and deterioration.
4. Inspect all fasteners and cushions for damage or
wear.
INSTALLING
1. Position the fan assembly on the radiator; then
secure with existing hardware.
2. Place the radiator with cushions and spacers into
position on the frame; then install the cap screws
and nuts. Tighten securely.
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3. Install the upper and lower coolant hoses; then
secure with hose clamps.
4. Install the front bumper (see Section 8).
5. Fill the cooling system with 1.2 L (1.3 U.S. qt) of
antifreeze. Check for leakage.
6. Connect the fan wiring to the main wiring harness.
Install the body and seat (see Section 8).

Hoses/Thermostat

REMOVING
1. Drain the coolant from the cooling system.
2. Remove the hose clamp securing the upper coolant
hose to the thermostat housing; then remove the
thermostat housing and the thermostat.
INSPECTING
NOTE: Whenever a part is worn excessively,
cracked, or damaged in any way, replacement is
necessary.
1. Inspect the thermostat for corrosion, wear, or
spring damage.
2. Using the following procedure, inspect the ther-
mostat for proper operation.
A. Suspend the thermostat in a container filled
with water.
B. Heat the water and monitor the temperature
with a thermometer.
C. The thermostat should start to open at 75° C
(167° F).
D. If the thermostat does not open, it must be
replaced.
3. Inspect all coolant hoses, connections, and clamps
for deterioration, cracks, and wear.
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SP294
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