B350 1 Ton Van V8-360 5.9L (1994)
Heater Core: Service and Repair
Front Heater Core
1. Recover refrigerant from system.
2. Disconnect battery ground cable and fin sensing cycling clutch switch connector, then drain cooling system.
3. Place a waterproof cover over alternator to prevent coolant from spilling over it, then disconnect and plug heater core hoses.
4. Disconnect refrigerant lines at expansion valve, then remove two screws from filter drier bracket and position lines aside. Cap all refrigerant lines.
Disconnect temperature control cable from cover.
5. From inside vehicle remove glove box, spot cooler bezel and appearance shield.
6. Through glove box opening and under instrument panel, remove screws and nuts retaining evaporator housing to dash panel.
Fig. 12 Heater Assembly
7. Remove two screws from flange connection to blower housing. Separate evaporator housing from blower housing and carefully remove evaporator
housing from vehicle.
8. Remove cover from housing, then remove heater core strap retaining screw and remove heater core.
9. Reverse procedure to install.
