Join Date: Jan 2005
Location: north Texas
Feedback Score: 0 reviews
Others are having VGT turbo problems too.......
This post is from a farm machinery forum about John Deere's 8030 series tractor. Thought that it might be interesting since our 6.0 are having problems
UPDATE - Deere has an explaination:
I spoke with my territory after-sale manager last week about my concerns and he confirmed my suspicions. According to his information, the cause of the failed turbo's is corrosion in part of the variable-geometry actuator mechanism. The failure only occurs when the engine sits idle for a period of time and then moving parts are stuck on next engine start.
He also said that the fault was at Borg-Warner because they had a batch manufactured that failed to get the suspect part(s) properly Nitride-treated to prevent the corrosion. I personally have a very hard time believing it was as simple as that because as far as I know, that process produces a blackened surface on the treated part...very easy to visually spot during assembly and I'm sure the QA folks would have noticed something as obvious as assembling bright, shiny parts where black ones had been the day before.
Deere rep assured me that my current turbo serial number falls after the problem was identified and corrected. This raises a whole seperate question: When was Deere planning on telling me that the first replacement turbo was also in the faulty group?
Who makes the turbo for the 6.0?
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