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1990 Dodge Ramcharger Question: heater core

 

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Visitor, Essex, IA, December 29, 2010, 16:57

Need how to remove heater core. Thanks.

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  • Answer #1

    December 29, 2010, 17:29
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     Master

    3.5 hours labor
    core about 69 instruction below
    Fig. 19 Heater Assembly. Less A/C



    Less A/C

    Disconnect battery ground cable.
    Disconnect heater hoses on engine side and plug heater outlets.
    Remove right side cowl trim if so equipped.
    Remove glove box, then structural brace through glove box opening.
    Remove right half of instrument panel lower reinforcement, making sure to disconnect ground strap.
    Disconnect control cables, then blower motor wires on engine side.
    Disconnect wires from resistor block.
    Remove screw holding heater to cowl side sheet metal.
    Remove 6 heater retaining nuts on firewall, then remove heater.
    Remove mode door crank and 15 screws to remove cover from housing, then slide heater core out.
    Reverse procedure to install.
    Fig. 20 Heater Assembly. With A/C



    With A/C

    Disconnect battery ground cable.
    Discharge A/C system and disconnect refrigerant and heater lines from unit.
    Move shift levers away from dash.
    Remove right side cowl trim panel, if equipped.
    Remove screws at base and remove glove box.
    Remove brace through glove box opening and remove ashtray.
    Remove right half of lower reinforcement screws.
    Disconnect radio ground strap.
    Remove right upper air duct by removing mounting screw and pulling duct out through glove box opening.
    Remove instrument panel center brace and right instrument panel cluster pivot bolt.
    Remove instrument panel cluster, disconnect shift indicator cable and lower steering column.
    Remove steering column studs and radio.
    Remove scoop connecting heater to center distribution duct (2 screws).
    Remove center distribution duct by pulling bottom of dash out to gain clearance.
    Remove floor air distribution duct.
    Disconnect temperature control cable through glove box.
    Remove retaining nuts from firewall and screw that retains assembly to cowl side sheet metal.
    Flex dash out and remove heater assembly.
    Remove nuts from door arms and remove door arms.
    Remove 7 screws to remove cover from housing.
    Remove evaporator core.
    Reverse procedure to install.

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  • Answer #2

    December 29, 2010, 17:51
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     Master

    You can find great repair manuals with step-by-step instructions, diagrams, parts locations and other important information here: http://bit.ly/mitchell_repair_manuals_online

    Zee

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