Primary (Front) Heater Core

PRIMARY (FRONT) HEATER CORE REPLACEMENT

























Remove or Disconnect
1. Engine coolant.
2. Heater hoses.
^ Blow out residual coolant from core using compressed air. This will prevent coolant leakage into the passenger compartment.

3. Engine cover.
Refer to Access Cover, Engine. Body and Frame

4. Floor air outlet duct(s).
Remove or disconnect:
^ Floor outlets (45).
^ Instrument panel lower extension.
^ Screws (46 and 48).
^ Floor air outlet duct (47) from lower extension.

5. Steering column. Refer to Steering Column. Steering
^ Lower the steering column for access.

6. Instrument panel. Instrument Panel, Gauges and Warning Indicators
^ Raise and support the right side of the instrument panel.






7. Defroster duct screw (62).

8. Temperature control cable.
9. Defroster control cable.
Fold the cable(s) back for access.

10. Heater case (33).
^ Three nuts at the engine compartment side of the distributor case and one screw on the passenger side.
^ Tilt the case assembly rearward at the top while lifting up until the core tubes clear the dash openings.

11. Screws (34).
12. Core clamps (29).
13. Core (35).



Install or Connect
1. Core (35).
^ Apply a bead of permagum sealer between the core and the case.

2. Core clamps (29).
3. Screws (34).
4. Heater case (33).
^ Apply a bead of permagum sealer between the heater case and the opening in the vehicle.
^ Tilt the case until the core tubes clear the cowl opening.

5. Temperature control cable.
6. Defroster control cable.






7. Defroster duct screw (62).
Tighten Screw (62) to 1.4 Nm (12 in. lb.)

8. Instrument panel.
9. Steering column.
10. Floor air outlet duct(s).
^ Floor air outlet duct (47) from lower extension.
^ Screws (46 and 48).
^ Instrument panel lower extension.
^ Floor outlets (45).

11. Engine cover.
12. Heater hoses.
13. Engine coolant.
^ Check for leaks.