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

Alternator

Test Output & Field Current Draw
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Rated Output Test Output Field Current Draw
55, 56, 63, 66, 70, 78, 85 -
Note: Increase engine speed until maximum alternator output is obtained (approximately 2000 rpm), output must be within 10 amps of rated output
4-5 at 12
97, 100, 108, 120 -
Note: A Run engine at moderate speed, output must be within 15 amps of rated output
4-5 at 12