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CAUTION: If fan blade assembly is replaced because of mechanical damage, water pump and viscous fan 1. Remove fan blade assembly from viscous fan drive unit (four bolts). 2. Lay fan on a flat surface with leading edge facing down. With tip of blade touching flat surface, replace fan if clearance between opposite blade and surface is greater than 2.0 mm (.090 inch). Rocking motion of opposite 3. Inspect fan assembly for cracks, bends, loose rivets or broken welds. Replace fan if any damage is found. INSTALLATION 5.7L/3.0L DIESEL CAUTION: There is an external ground wire con- 1. Position fan drive and shroud in vehicle. 2. Install fan shroud upper mounting bolts. Do not tighten at this time. 3. Install radiator upper hose onto radiator. 4. Connect power steering cooler hoses. 5. Raise vehicle on hoist. 6. Install fan shroud lower mounting bolts. Tighten to 6 N·m (50 in. lbs.). NOTE: When ever the high pressure line fittings 7. Lubricate the o-rings on the fittings with power steering fluid then connect inlet and outlet high pressure lines to fan drive. Tighten inlet line to 49 N·m (36 ft. lbs.) tighten outlet line to 29 N·m (21.5 ft. lbs.). 8. Connect low pressure return hose to fan drive. 9. Lower vehicle. 10. Install radiator upper hose. 11. Connect electrical connector for hydraulic fan control solenoid. 12. Tighten fan shroud upper mounting bolts to 6 N·m (50 in. lbs.). 13. Refill cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE). CAUTION: Do not run engine with power steering fluid below the full mark in the reservoir. Sever damage to 14. Refill power steering fluid reservoir and bleed air from steering system (Refer to 19 - STEERING/PUMP - STANDARD PROCEDURE). 15. Run engine and check for leaks. INSTALLATION - ELECTRIC FAN 1. Position fan assembly on shroud. 2. Install fan to fan shroud mounting nuts. Tighten to 5.5 N·m (50 in. lbs.). 3. Position fan and shroud assembly in vehicle. 4. Install shroud mounting bolts. Tighten to 5.5 N·m (50 in. lbs.) 7 - 38 ENGINE WK |