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Cat Lift Trucks (& Caterpillar) P6500:
K25 piston woes

Had a knocking engine sounded low.Pulled pan all looked ok.Pulled head #4 piston scufed bad on thrust side.#1 and oil ring moves in grove #2 dont.Looks like lack of oil but the rest are fine.Anyone seen this on such a great engine.We have hundreds running and this is the first time ive seen this.7500 hrs est

• Posted 21 Jan 2010 23:12
• Discussion started by proshadetree
• Tennessee, United States

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