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

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Alternator

Test Output & Field Current Draw
<gmac03056009>
Rated Output Test Output Field Current Draw
78,97 -
Note: Increase engine speed until maximum alternator output is obtained (approx. 2000 rpm); output must be within 10 amps of rated output.
4-5 at 12
100 -
Note: Run engine at moderate speed of 2000 rpm; output must be within 15 amps of rated output.
---
56, 66, 94 -
Note: Increase engine speed until maximum alternator output is obtained (approximately 2000 rpm), output must be within 10 amps of rated output
4-5
85,105,108,120 -
Note: Run engine at moderate speed of 2000 rpm; output must be within 15 amps of rated output.
5.5-7