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

With Scan Tool

Drive Belt (For Generator)
Vibration Frequency
When Checked 167 - 186 Hz
When a New Belt is Installed 186 - 224 Hz
When a Used Belt is Installed 167 - 186 Hz

Drive Belt (For Power Steering Oil Pump)
Vibration Frequency
When Checked 400 - 489 Hz
When a New Belt is Installed 489 - 712 Hz
When a Used Belt is Installed 400 - 489 Hz

Drive Belt (For Power Steering Oil Pump and A/C Compressor)
Vibration Frequency
When Checked 147 - 158 Hz