Cooling System Fans - Jeep cherokee 2000 Service Manual

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DESCRIPTION AND OPERATION (Continued)

The coolant reserve/overflow system consists of a

radiator mounted pressurized cap, a plastic reserve/

overflow tank (Fig. 3) (Fig. 4), a tube (hose) connect-

ing the radiator and tank, and an overflow tube on

the side of the tank.

Fig. 3 Reserve/Overflow Tank—Except Right Hand

1 – COOLANT RESERVE/OVERFLOW TANK

3 – MOUNTING BOLTS

4 – TUBE TO RADIATOR

As the engine cools, a vacuum is formed in the

cooling system of both the radiator and engine. Cool-

ant will then be drawn from the coolant tank and

returned to a proper level in the radiator.

COOLING SYSTEM FANS

All models are equipped with a viscous fan. This

thermal viscous fan drive is a torque-and-tempera-

ture-sensitive clutch unit. It automatically increases

or decreases fan speed to provide proper engine cool-

ing. Vehicles with a 2.5L/4.0L engine with air condi-

tioning, or 4.0L with "max" cooling also have an

auxiliary electrical cooling fan.

Fig. 4 Reserve/Overflow Tank—With Right Hand

2 – COOLANT RESERVE/OVERFLOW TANK

3 – MOUNTING BOLTS

4 – LOWER BRACKET

5 – TUBE TO RADIATOR

Fig. 5 Viscous Fan Drive and Fan Blade Assembly

1 – VISCOUS FAN DRIVE

2 – FAN BLADE ASSEMBLY

COOLING SYSTEM

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