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 182 - 229 Hz
When a New Belt is Installed 239 - 276 Hz
When a Used Belt is Installed 195 - 218 Hz

When Checked 147 - 184 Hz
When a New Belt is Installed 193 - 222 Hz
When a Used Belt is Installed 157 - 176 Hz

When Checked 190 - 239 Hz
When a New Belt is Installed 249 - 288 Hz
When a Used Belt is Installed 203 - 227 Hz

Drive Belt (For Power Steering Pump)
Vibration Frequency
When Checked 159 - 225 Hz

Drive Belt (For A/C Compressor)
Vibration Frequency
When Checked 203 - 232 Hz