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)

Or, hide this message: temporarily or permanently

Heater Core Replacement



Remove or Disconnect









1. Engine coolant.
^ Drain enough coolant into a clean container to lower the coolant level below the level of the lowest heater hose fitting.
2. Heater hoses.
3. Rear case screws.
4. Rear case.
5. Screws.
6 Brackets.
7. Heater core from front case.
8. Seals

Install or Connect

1. Seals
2. Heater core from front case.
3. Brackets.
4. Screws.
5. Rear case.
6. Rear case screws.
7. Heater hoses.
8. Engine coolant.
^ Use the coolant drained earlier only if it is uncontaminated. Discard contaminated coolant and add fresh 50/50 coolant and water mixture.