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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

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Heater Control Valve: Service and Repair

Engine coolant shutoff valve



- Remove plenum tray.
- Loosen cap on coolant expansion tank to release pressure.
- Remove coolant hoses -B- leading to heater core and plug hose connections.
- Loosen hose clamps on intake and outlet of valve.
- Remove hoses from valve.
- Remove screw -A- and remove valve.