Valve Rotator or Spring Lock Is Free
Use this procedure in order to troubleshoot a problem with the valve rotators or spring locks.
- Valve Components
Show/hide table
| Troubleshooting Test Steps | Values | Results |
|---|---|---|
1. Valve Components A. Inspect the following components for damage: 1. Valve rotators 2. Spring locks 3. Valve springs 4. Valves B. Ensure that the valve has not contacted the piston. If the valve has contacted the piston, check the exhaust system for debris. |
Damaged components |
Result: The valve components are damaged. Replace the damaged components. A valve rotator that is cracked or a valve rotator that is broken is an indication of an engine overspeed. Determine the cause of the engine overspeed. Repair the condition. |
Complete the procedure in the order in which the steps are listed.
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