Heater Core: Service and Repair

Fig. 12 Exploded view of instrument panel. 1987-88 Sentra:

1. Disconnect battery ground cable.
2. Disconnect heater hose at firewall connections of heater core.
3. Remove instrument panel, Fig. 12.

Fig. 26 Exploded view of heater system. 1987-88 Pulsar & Sentra:

4. Refer to Fig. 26 to complete removal of heater core.

Fig. 22 Exploded view of heater case.:

5. Separate heater case, Fig. 22, and remove core.
6. Reverse procedure to install.