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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Radiator Cap Testing

CAP TESTING

1. Remove the radiator cap, wet its seal with engine coolant, then install it to pressure tester.





2. Apply a pressure of 93 - 123 kPa (0.95 - 1.25 kgf/cm2, 14 - 19 psi)
3. Check for a drop in pressure.
4. If the pressure drops, replace the cap.