Medium and Heavy Trucks
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How is the piston failing?(Cracked,Melted,Burnt,ect..). Do you have pictures? Were the injectors and heads replaced at OH? who did the repair a Cummins authorized shop? what is the engine serial number and part number of the Pistons used if you have that info.
Ok thanks, ***** ***** help.
Is the center of that piston jet black underneath? It looks like it. Was the Piston cooling nozzle intact and checked for plugging or cracks or broken? I see excessive scoring as well. Thinking the piston overheated from a failed piston cooling nozzle and the piston assy swelled up and made contact with the liner. or there was a defect with the skirt that allowed it to contact the liner and break than cause the scoring from still running Its tough to see the whole picture here. Does the oil filter show signs of metal from the piston failing prior to the CAT event? you would have to get an oil sample from the filter by cutting it open and checking the media for metal. If it is present han the oil was circulating the debris prior and it was not an instant failure ect. Let me know. Since you used Cummins parts you can call Cummins and have a DFSE come out to your shop and perform a full failure Analise on the failed component. The DFSE is a Field Service Engineer and works for The Cummins factory. He can be reached at your local Cummins Distributor,. NOT a dealer I can also look up your local distributor with your state and town .Please don't forget to rate my service.
You will need Cummins Insite to assist in locating the failed injector. The injectors should of been replaced at the original overhaul as they only have a life span oof about 500k miles. With insite you can do a cutout test and an cylinder performance test to check each cylinder also now as an accelerated base cut out test.
Any luck, Just following up, Please don't forget to rate my service
Just following up, Please don't forget to rate my service
Please don't forget to rate my service.