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

No-Load Test

1. Ensure all electrical loads are off and brake pedal is released.
2. Install ammeter as shown in Fig. 7, then start engine and raise RPM to between 2,500 - 3,000 RPM.

Fig. 7 No-Load & Load Test Connections:





3. Ensure alternator output is at least 5 amps. If not, replace alternator as necessary.