Heater Radiator — Accord 1986-89 (Honda Accord 3)

1. Drain the coolant from the bottom hole of the radiator and save it for reuse. The drain pan is placed under the hose connection on the heat-insulating partition, pay attention to the location of the hoses, and then disconnect the two hoses.

2. Disconnect the heater valve cable from the valve. Unscrew the two lower mounting nuts.



4. On push-button heaters, disconnect the cooling fan cable from the heater. On lever-type heaters, disconnect the operating mode switching cable and the air mixer cable.



5. Remove the instrument panel.

6. Disconnect the heater hoses.

7. On push-button heaters, disconnect the air mixer cable from the heater and the wiring harness from the connector.

8. Unscrew the heater bolts and move the heater away from the fasteners.



9. Assembly is done in reverse order. Pay attention to the following points:

• a. Use grease on all O-rings.
• b. Check the position of the inlet and outlet hoses in relation to the heater to ensure that they are not reversed. Install the clamps in the correct positions and ensure that they are securely fastened.
• c. Fill and bleed the cooling system using the bleed bolt.
• d. Make sure that the cables that open/close the flaps are securely connected for proper operation of the flaps.