Replace the Two-Piece Piston if the Piston Contacts a Valve {1225}
- Caterpillar Products: Machine Engines
- All 3500 Series
Replace the piston under the following conditions:
- The engine has dropped a valve.
- The valve and the piston have made contact.
- The piston is not a one-piece forged steel type.
For a piston that is not the one-piece forged steel type, the skirt can crack due to the force of the piston contact with the valve or of contact with a piece that is associated with the valve. The crack would result in future failure of the piston which could cause additional damage to the engine.
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