<p>Section 12-03A: Air Conditioning System—Manual A/C-Heater 1998 Taurus, Sable Workshop Manual REMOVAL AND INSTALLATION </p><p>Heater Core </p><p>Removal </p><p>NOTE: If a heater core leak is suspected, the heater core must be pressure leak tested before it is removed from the vehicle. Refer to Section 12-00 . </p><p>1. NOTE: If a heater core leak is suspected, the heater core must be leak tested before it is removed from the vehicle. Refer to Section 12-00 . </p><p>Remove instrument panel (04320); refer to Section 01-12 . </p><p>2. Drain coolant from radiator (8005) into a clean container. </p><p>3. Disconnect heater water hoses (18472) from heater core (18476) . Plug heater core tubes or blow any coolant from heater core with low pressure air. </p><p>4. Remove four retaining screws and A/C electronic blend door actuator from A/C evaporator housing. 5. Remove metal cover, disengage spring from heater core cover (18B300) and remove spring from lever. Part Item Number Description 1 — Metal Link (Part of 19B555) 2 18B300 Heater Core Cover 3 19B555 A/C Evaporator Housing 4 — Spring (Part of 19B555) 5 — Lever (Part of 19B555) 6 — Locking Ramp (Part of Secondary A/C Air Temperature Control Door Shaft) 7 — Secondary A/C Air Temperature Control Door Shaft (Part of 19B555) 6. NOTE: Do not attempt to bend any part of the lever; it is brittle and will break. </p><p>Gently depress locking ramp and remove lever from secondary A/C air temperature control door end. </p><p>7. Rotate primary A/C air temperature control door shaft down, then swing metal link and remove from pin. </p><p>8. Remove three heater core cover retaining screws and remove heater core cover and heater core cover seal (18N267) from A/C evaporator housing. </p><p>9. Remove heater core and seal from A/C evaporator housing by pushing on heater core tubes. Item Part Number Description 1 19B555 A/C Evaporator Housing 2 18476 Heater Core 3 18N267 Heater Core Cover Seal 4 18B300 Heater Core Cover 5 N805347-S58 Screw </p><p>Installation </p><p>1. Transfer foam core seal to new heater core. </p><p>2. Install heater core and foam core seal into A/C evaporator housing. </p><p>3. Position heater core cover and seal on A/C evaporator housing and install three retaining screws. </p><p>4. Install metal link over pin on primary A/C air temperature control door lever. </p><p>5. Install secondary A/C air temperature control door lever on metal link. 6. Install secondary A/C air temperature control door lever to secondary A/C air temperature control door end. </p><p>7. Engage spring to heater core cover and secondary A/C air temperature control door lever. </p><p>8. Install A/C electronic blend door actuator to A/C evaporator housing with four retaining screws. </p><p>9. Connect heater water hoses to heater core . </p><p>10. Fill radiator to correct level with previously removed coolant or specified mixture of coolant and water. </p><p>11. Install instrument panel as described in Section 01-12 . </p><p>12. Check system for proper operation. </p>