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Heater Core: Skylark: Replacement

  1. Disconnect battery. Drain cooling system. Disconnect heater hoses at core and plug openings to prevent coolant spillage on car interior. Remove retaining nuts from core case studs on engine side of dash. Remove glove box liner and door. From inside car, drill out lower right hand heater case stud with a 1/4" drill.
  2. Pull core and case assembly from dash. Disconnect heater cables and blower motor resistor connector from heater case, remove assembly from car. With case on bench, remove core tube seal and core retaining strips, and remove core. To install, reverse removal procedure replacing drilled out heater case stud with a screw and stamped nut.
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