Jeep Cherokee (XJ): Electric cooling fan-2.5L. Electric cooling fan-4.0L. Block heater

Electric cooling fan-2.5L

The electric fan module is only to be serviced as an assembly.

REMOVAL

(1) Disconnect battery negative cable.

(2) Disconnect CRS hose from radiator filler neck and pull through (remove) the shroud retaining loops.

(3) Detach power steering reservoir from fan shroud and lay aside.

(4) Remove the four viscous fan/drive assembly mounting nuts from the water pump studs and remove viscous fan assembly.

(5) Disconnect cooling fan electrical connector.

(6) Remove the four upper fan shroud to radiator crossmember mounting screws (Fig. 42).

(7) Lift fan and shroud assy. from vehicle (8) Detach fan harness from shroud.

(9) Remove four fan module to shroud phillips head screws (Fig. 43) and remove module from shroud.

INSTALLATION

(1) Position fan module in shroud so that the harness exits the motor at the 12 o'clock postion (Fig.

43).

(2) Install and tighten fan module to shroud screws to 3 N·m (31 in. lbs.).

(3) Route fan harness through the shroud and attach to shroud at correct position.

(4) Lower fan and shroud assembly into place, making sure the shroud alignment tabs rest in their corresponding lower radiator slots.

(5) Install upper fan shroud screws and tighten to 3 N·m (31 in. lbs.).

Fig. 42 Fan Shroud Removal/Installation

1 - ELECTRIC FAN/SHROUD ASSEMBLY
2 - UPPER CROSSMEMBER
3 - ISOLATOR
4 - RADIATOR
5 - LOWER CROSSMEMBER
6 - U-NUT

Fig. 43 Fan Module Orientation and Mounting

1 - FAN MOTOR HARNESS AT 12 O'CLOCK POSITION
2 - MOUNTING SCREWS (4)
3 - FAN CONNECTOR

(6) Connect fan electrical connector.

(7) Install power steering reservoir to shoud.

(8) Install viscous fan drive assy. to water pump hub and tighten nuts to 27 N·m (20 ft. lbs.) (9) Connect battery negative cable.

Electric cooling fan-4.0L

REMOVAL

The auxiliary cooling fan is attached to the radiator upper crossmember behind the radiator.

(1) Remove the two fan mounting bolts from radiator upper crossmember (Fig. 44).

(2) Disconnect the electric fan connector.

(3) Lift fan straight up and out of vehicle.

INSTALLATION

(1) Align lower retaining tabs of fan shroud with slots in bracket at bottom of radiator. Push fan down into position.

(2) Tighten the mounting bolts to 4 N·m (31 in.

lbs.) torque.

Fig. 44 Auxiliary Cooling Fan-Remove/Install-Typical

1 - ELECTRIC COOLING FAN
2 - MOUNTING BOLT
3 - ELECTRIC COOLING FAN CONNECTOR
4 - MOUNTING BOLT

(3) Connect auxiliary cooling fan electrical connector.

Block heater

REMOVAL

Refer to correct illustration (Fig. 45) (Fig. 46) when servicing block heater.

WARNING: DO NOT REMOVE THE CYLINDER BLOCK DRAIN PLUGS OR LOOSEN THE RADIATOR DRAINCOCK WITH THE SYSTEM HOT AND PRESSURIZED.

SERIOUS BURNS FROM THE COOLANT CAN OCCUR.

DO NOT WASTE reusable coolant. If solution is clean, drain coolant into a clean container for reuse.

(1) Drain coolant from radiator and engine cylinder block.

(2) Unplug power cord from block heater.

(3) Loosen screw in center of block heater (Fig. 45) (Fig. 46).

(4) Remove block heater from cylinder block.

INSTALLATION

(1) Thoroughly clean the engine core hole and the block heater seat.

(2) Insert block heater assembly into core hole with element loop pointing Up.

(3) Seat block heater flush against block face.

Tighten mounting screw to 3.6 N·m (32 in. lbs.) torque.

(4) Fill cooling system with coolant. Pressurize system and inspect for leaks.

(5) Plug power cord into block heater. Route cord away from moving parts, linkages and exhaust system components. Secure cord in place with tie-straps.

Fig. 45 Heater and Cord- 2.5L 4-Cylinder Engine

1 - POWER CORD LOCATION
2 - BLOCK HEATER