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CAUTION: When installing the serpentine acces- (10) Position fan shroud and fan blade/viscous fan drive assembly to vehicle as a complete unit. (11) Install fan shroud. water pump shaft. (13) Fill cooling system. Refer to Cooling System— Draining and Refilling in this group. (14) Connect battery negative cable. WATER PUMP 4.7L ENGINES The water pump on 4.7L engines is bolted directly to the engine timing chain case/cover. A gasket is used as a seal between the water pump and timing chain case/cover. If water pump is replaced because of bearing/shaft damage, or leaking shaft seal, the mechanical cooling any of these conditions are found. Also check condi- The water pump can be removed without discharg- ing the air conditioning system (if equipped). REMOVAL (1) Disconnect negative battery cable from battery. ing System in this group. Do not waste reusable coolant. If solution is clean, drain coolant into a clean container for reuse. (3) The thermal viscous fan drive is attached (threaded) to the water pump hub shaft. Remove fan/ Fig. 31 Coolant Return Tube—5.2L/5.9L Engines— Typical 1 – COOLANT RETURN TUBE Fig. 32 Belt Routing—5.2L/5.9L Engines 1 – IDLER PULLEY DN COOLING SYSTEM 7 - 27 REMOVAL AND INSTALLATION (Continued) |