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)

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Wheel Hub: Testing and Inspection




Driveline System







Inspection and Verification

1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical damage.






3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

4. If the cause is not visually evident, verify the symptom and GO to Symptom Chart. Symptom Related Diagnostic Procedures


Driveshaft Center U-Joint and CV Joint Inspection

With the vehicle in NEUTRAL, position it on a hoist. Refer to Maintenance/Service and Repair. Rotate the driveshaft by hand. Check for rough operation or seizure of the U-joints or CV joints. Install a new U-joint or driveshaft if it shows signs of seizure, excessive wear or incorrect seating.