Heater Core: Service and Repair

Fig. 10 Heater assembly. CJ & Scrambler models:

CJ, SCRAMBLER & WRANGLER

1. Disconnect battery ground cable and drain cooling system.
2. Disconnect heater core hoses.
3. Disconnect damper door control cables.
4. Disconnect blower motor electrical connector.
5. Disconnect water drain hose and defroster hose.
6. Remove nuts retaining heater housing assembly to instrument panel. Remove heater housing assembly by tilting heater downward to disengage it from air inlet duct and pulling toward rear of vehicle.
7. Remove heater core from heater housing.
8. Reverse procedure to install.