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

Brakes and Traction Control: Testing and Inspection




NVH Troubleshooting Chart

Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.













x: Applicable

[A]: Pads - damaged

[B]: Pads - uneven wear

[C]: Shims damaged

[D]: Rotor imbalance

[E]: Rotor damage

[F]: Rotor runout

[G]: Rotor deformation

[H]: Rotor deflection

[I]: Rotor rust

[J]: Rotor thickness variation

[K]: PROPELLER SHAFT

[L]: FRONT FINAL DRIVE

[M]: REAR FINAL DRIVE

[N]: DRIVE SHAFT

[O]: SUSPENSION

[P]: TIRES AND ROAD WHEEL

[Q]: STEERING