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Heater Inlet/Outlet & Heater Water Pump: Installation

NOTE: Heater inlet hose quick connect coupling collar is black. The heater outlet hose quick connect coupling is white. White lines on hoses should always be installed at 12 o'clock position. Install heater hose/heater water pump assembly into manifold clamp but do not lock clamp.
  1. Install block bolt to heater water pump mount and heat shield. See Figure.
  2. Install heater water pump electrical connector. See Figure.
  3. Install heater inlet hose to coolant bridge and install clamp at 12 o'clock position. See Figure.
  4. Install heater inlet hose to heater pump and install clamp at 1 o'clock position.
  5. Install heater pipe heater inlet hose to heater pump and install clamp at 12 o'clock position. See Figure.
  6. Install heater outlet hose to engine coolant inlet and install clamp. See Figure.
  7. Install return line to coolant bridge and install clamp at 2 o'clock position.
  8. Install heater core inlet quick connect to heater inlet pipe (closest to driver's side). Holding quick connect by black collar, slide onto heater core pipe. When quick connect engages heater core pipe bead, collar will slide towards front of dash and lock into position. A green paint band will be visible when collar is properly positioned. See Figure.
  9. Verify proper engagement of quick connect by attempting to pull off of heater pipe.
  10. Install heater core outlet quick connect to heater outlet pipe (closest to passenger's side). Holding quick connect by white collar, slide onto heater core pipe. When quick connect engages heater core pipe bead, collar will slide towards front of dash and lock into position. A green paint band will be visible when collar is properly positioned.
  11. Verify proper engagement of quick connect by attempting to pull off of heater pipe.
  12. With hoses properly positioned, close heater assembly to manifold clamp.
  13. Connect negative battery cable.
  14. Fill and bleed air from cooling system. See BLEEDING .
  15. Use fresh water to rinse away any coolant that was spilled during service.