Cooling System; Cooling System Specifications (Non-Efi); Cooling System Layout And Testing - Polaris Ranger 500 2x4 2007 Service Manual

ENGINE

COOLING SYSTEM

Cooling System Specifications (Non-EFI)

THERMISTOR READING DURING OPERATION
Approx. Reading
Condition
Hot Light On
Fan On (Temp +
Fan Off (Temp -)
Room Temperature 2000Ω ± 3%
Thermostat
System Capacity
Radiator Cap Relief
Pressure
3.16
Thermistor
26 + 2.1 ft. lbs.
(35 + 3 Nm)
Temperature
(Ohms)
185Ω ± 3% 215° F (102° C)
245Ω ± 3% 195° F (91° C)
307Ω ± 3% 180° F (82° C)
77° F (25° C)
Starts opening 176° F (80° C)
Open 8mm @ 205° F (96° C)
2.25 Quarts (2.13L)
13 PSI

Cooling System Layout and Testing

Never remove radiator cap when engine is
warm or hot. The cooling system is under
pressure and serious burns may result.
Allow the engine and cooling system to
cool before servicing.
FLOW
Thermostat
Cylinder
Head
System Pressure Test
1. Remove front cover.
2. Remove recovery bottle hose from coolant filler.
3. Connect a Mity Vac™ (PN 2870975) to radiator and
pressurize system to 10 PSI. The system must retain 10 lbs
of pressure for five minutes or longer. If pressure loss is
evident within five minutes, check radiator, all cooling
system hoses and clamps, or water pump seal.
Radiator Cap Pressure Test
1. Remove radiator cap and test using a cap tester
(commercially available).
2. The radiator cap relief pressure is 13 lbs.
WARNING
Radiator
Water Pump
Cylinder