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: Testing and Inspection

1. INSPECT EVAPORATOR
a. Check evaporator fins for blockage.
If the fins are clogged, clean them with compressed air.

NOTE: Never use water to clean the evaporator.

b. Check fitting for cracks or scratches.
If necessary, repair or replace.

2. INSPECT HEATER RADIATOR
Inspect fins for blockage.
If the fins are clogged, clean them with compressed air.