Important Notice

VGT turbocharger John Deere PowerTech 6.8L

DiPa Code:
TRB597R
OEM Code:
12639900108
Brand:
DIPA SPORT
Condition:
Remanufactured
Overhaul of the variable geometry turbo with electronic actuator, designed to optimize low-end torque and reduce turbo-lag
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Warnings

ADVICE AND WARNINGS TO FOLLOW BEFORE REPLACING THE TURBO

Before changing the turbocharger, it is essential to fully understand the causes that led to its failure.

The operations described below, are fundamental to avoid a second failure and consequently a warranty claim.

In case of a warranty claim, the execution of these essential replacement/cleaning operations must be demonstrable through an invoice. If they do not appear, the warranty claim will NOT be considered.

 

DEPENDING ON THE IDENTIFIED ISSUE, PERFORM THE FOLLOWING OPERATIONS FOR A CORRECT REPLACEMENT OF THE TURBO.

 

LUBRICATION

- Thorough cleaning and/or replacement of the oil inlet and outlet pipes.

- The turbo failure may have generated metal shavings circulating freely in the lubrication system. Before performing the intervention, replace the lubricating oil along with the respective filter. After the intervention is completed, briefly run the engine to facilitate the removal of impurities and change the oil and filter again.

- Check that the oil pump pickup inside the sump is not clogged. If so, clean thoroughly and/or replace the oil pump.

- Check the efficiency and perform a thorough cleaning of the oil vapor recovery valve.

ASPIRATION ( The turbo whistles during acceleration )

- Check that the air intake hoses of the turbine do not have cracks; if they do, replace them. A small piece of rubber sucked in by the turbo that impacts against the impeller at a speed of 100.000 rpm has devastating effects.

- Change the air filter.

- Clean and/or replace the intercooler and the related hoses.

EXHAUST ( The turbo whistles on release)

- Check the integrity of the internal module of the FAP/DPF/CAT and replace it if necessary. If it is intact perform an internal regeneration/washing.

- Check the efficiency of the EGR valve. Carry out a thorough cleaning of it and the exhaust gas recirculation system ducts.

Details

Supplied without gaskets

Typical Errors and Defects

Typical defects:
Actuator failure
Insufficient engine performance
Oil leaks

Applications
JOHN DEERE
JOHN DEERE Series 6
Model Year of Production Displacement KW HP Cylinders Fuel Type Engine Code
Series 6 2009-10-01 - 6788 cc 88 KW 120 HP 6 Cylinders Diesel 6068HL280
Series 6 2009-10-01 - 6788 cc 99 KW 135 HP 6 Cylinders Diesel 6068HL282
Series 6 2009-10-01 - 6788 cc 107 KW 146 HP 6 Cylinders Diesel 6068HL283
Series 6 2012-01-01 - 6788 cc 110 KW 150 HP 6 Cylinders Diesel 6068HL490
Series 6 2012-01-01 - 6788 cc 103 KW 140 HP 6 Cylinders Diesel 6068HL490
Series 6 2012-01-01 - 6788 cc 125 KW 170 HP 6 Cylinders Diesel 6068HL495
Series 6 2012-01-01 - 6788 cc 140 KW 190 HP 6 Cylinders Diesel 6068HL497
Series 6 2012-01-01 - 6788 cc 154 KW 210 HP 6 Cylinders Diesel 6068HL497
Series 6 2012-08-01 - 6788 cc 110 KW 150 HP 6 Cylinders Diesel 6068HL490
Series 6 2012-08-01 - 6788 cc 125 KW 170 HP 6 Cylinders Diesel 6068HL490
Techinical Info

The code 12639900108 identifies a turbocharger for John Deere PowerTech 6.8L (6068) engines. The unit belongs to the BorgWarner/KKK B2UV family with variable geometry (VGT) and an integrated electronic actuator, supplied as a complete assembly (compressor, turbine, center housing and VGT linkage).

Technical specifications

  • Type: VGT turbocharger with integrated electronic positioner
  • Manufacturer family: BorgWarner/KKK B2UV
  • Supply: oil lubrication with dedicated feed and return lines; priming required at installation
  • Cooling: central housing cooled by convection
  • Interfaces: turbine housing with variable-geometry vanes; compressor housing outlet toward an air-to-air intercooler
  • Position sensor: integrated in the actuator for ECU feedback

DIPA can intervene to overhaul this component, which is crucial for the correct operation of the engine.

Functionality

  • Continuous VGT adjustment to improve low-end torque, reduce turbo lag, and optimize boost pressure
  • Integration with the engine ECU: thermal/pressure protection strategies and support for EGR/aftertreatment
  • Limp-home mode with boost limitation in case of actuator/sensor faults

Model applications

  • John Deere Series 6 tractors (in the 150–175 HP range)

Common faults

  • Actuator failure
  • Insufficient engine performance
  • Oil leaks

Final conclusions

The 12639900108 is a BorgWarner/KKK B2UV VGT intended for PowerTech 6.8L engines on John Deere platforms.

DIPA has a wide range of spare parts dedicated to the Agri world: from vehicle components to parts for auxiliary equipment. In addition, it offers reconditioned components with like-new performance that provide cost savings on replacement while contributing to environmental protection through the circular economy. If the part you need is not available, don’t worry: DIPA can overhaul your component on demand, restoring full functionality and safety in a short time.