Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Heater Core: Service and Repair

1. Remove cooling unit as outlined under Evaporator Core, Service and Repair.
2. Drain engine coolant from radiator.
3. Disconnect water hose from heater unit.
4. Remove instrument panel and reinforcement as outlined in Dash Panel Service.
5. Remove defroster duct heater to register No. 4, then the heater unit.
6. Remove two screws and clips from top of heater unit, then pull heater core from heater unit.
7. Reverse procedure to install.