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: Service and Repair

Heater Hoses:






Tool Required:
J 37097 Mubea Hose Clamp Pliers

Remove or Disconnect

1. Drain cooling system.
2. Heater hoses from heater core, using J 37097.
3. Retaining screws and A/C temperature valve actuator.
4. Retaining screws and heater core cover.
5. Retaining screws and heater core from vehicle.

Install or Connect

1. Heater core into vehicle and attaching screws.

Tighten
^ Screws to 1.4 Nm (12 lb in).

2. Heater core cover and attaching screws.

Tighten
^ Screws to 1.4 Nm (12 lb in).

3. Temperature valve actuator and screws.

Tighten
^ Screws to 1.4 Nm (12 lb in).

4. Heater hoses to heater core using tool J 37097.
5. Fill cooling system.