Others are having VGT turbo problems too.......

[johndeerefarmer]

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?

[Diesel Jay]

Garrett makes the VGT turbo for the 6.0L. Interestingly, the Dmax uses the same turbo, but with the addition of a position control sensor that minimizes a lot of these issues. Nav opted not to utilize the position sensor, and ultimately, blamed Garrett for the high rate of turbo failures on the 6.0L. As a result, Nav turned to Borg-Warner to supply the turbos on the 6.4L.

- Jay

[johndeerefarmer]

Thanks for the info.

I guess time will tell as to which manufacturer is the best.

[leffmand]

I believe educating owners as to the limits of the equipment is just as important as the Mfg. If you received a notice that this equipment is not designed for long idle times - say in excess of 15 minutes - would you contine to let it idle for longer time?

Also, I hope the October diesel fuel refinements will actually fix the idle and EGR issues. Keep your fingers crossed. Because going to a V10 in a heavy is not really an long term option.

I love my 7.3 and will keep it like the M'tang. The 6.0 ???? The wife - maybe an 08 or 09 XL Expedition so I can again reclaim my diesel. Need a tow vehicle.

Anyone know how to put a V10 in the m'tang - would love to somke some vipers. [img]/ubbthreads/images/graemlins/smokin.gif[/img]

[glenboyesen]

no need for a v10 in your 'tang, just put some STS remote mounted turbos on it and you'll be set! [img]/ubbthreads/images/graemlins/wink.gif[/img]