Table of Contents

General Information
Welding on a Vehicle with an Electronic Controlled Fuel System


General Information

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This system incorporates the latest technology at the time it was manufactured; yet, it is designed to be repaired using normal repair practices performed to quality standards.

 WARNING 

Cummins Inc. does not recommend or authorize any modifications or repairs to components except for those detailed in Cummins Service Information. In particular, unauthorized repair to safety-related components can cause personal injury or death. Below is a partial listing of components classified as safety-related:
  1. Air Compressor
  2. Air Controls
  3. Air Shutoff Assemblies
  4. Balance Weights
  5. Cooling Fan
  6. Fan Hub Assembly
  7. Fan Mounting Bracket(s)
  8. Fan Mounting Capscrews
  9. Fan Hub Spindle
  10. Flywheel
  11. Flywheel Crankshaft Adapter
  12. Flywheel Mounting Capscrews
  13. Fuel Shutoff Assemblies
  14. Fuel Supply Tubes
  15. Lifting Brackets
  16. Throttle Controls
  17. Turbocharger Compressor Casing
  18. Turbocharger Oil Drain Line(s)
  19. Turbocharger Oil Supply Line(s)
  20. Turbocharger Turbine Casing
  21. Vibration Damper Mounting Capscrews
  22. Manual Service Disconnect
  23. High Voltage Interlock Loop
  24. High Voltage Connectors/Connections and Harnesses
  25. High Voltage Battery System
  26. Power Inverter
  27. Generator Motor
  28. Clutch Pressure Plate
  • Follow all safety instructions noted in the procedures
  • Follow the manufacturer's recommendations for cleaning solvents and other substances used during repairs. Some solvents have been identified by government agencies as toxic or carcinogenic. Avoid excessive breathing, ingestion and contact with such substances. Always use good safety practices with tools and equipment
  • Provide a clean environment and follow the cleaning instructions specified in the procedures
  • All components must be kept clean during any repair. Contamination of the components will cause premature wear.
  • Perform the inspections specified in the procedures
  • Replace all components or assemblies which are damaged or worn beyond the specifications
  • Use genuine Cummins new or ReCon® service parts and assemblies
  • The assembly instructions have been written to use again as many components and assemblies as possible. When it is necessary to replace a component or assembly, the procedure is based on the use of new Cummins or Cummins ReCon® components. All of the repair services described in this manual are available from all Cummins Distributors and most Dealer locations.
  • Follow the specified disassembly and assembly procedures to reduce the possibility of damage to the components


Welding on a Vehicle with an Electronic Controlled Fuel System

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 CAUTION 

Disconnect both the positive (+) and negative (-) battery cables from the battery before welding on the vehicle. Attach the welder ground cable no more than 0.61 meters [2 feet] from the part being welded. Do not connect the ground clamp of the welder to any of the sensors, wiring harness, electronic control units or the components. Direct welding of any electronic components must not be attempted. Sensors, wiring harness, and electronic control unit should be removed if nearby welding will expose these components to temperatures beyond normal operation. Additionally, all electronic control unit connectors must be disconnected

Last Modified:  10-Jul-2012
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