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Welding Checklist

 

Disconnect the following before welding on completed coaches:

  • U270/U280/U295 - B-21 - Alternator ground at alternator
  • C-2 - Transmission ground at breakerboard
  • Allison ECU - Under dash / driver’s side / both plugs
  • ABS - 3 plugs in brake ECU - Power in / Front axle / Rear axle
  • HWH -All grounds on coach and engine batteries
  • U240 All of the above except ABS
  • U300/U320 C-E18 Same as U270/U280/U295 plus:
  • PEEC-ECM at engine - lower square plug w/ allen head screw (2402)
  • U300/U320 C-E22 Same as U270/U280/U295 plus:
  • CELECT-ECM at engine - top plug w/ 2 screws (38459) and round Deutsch plug (2348)
  • Any coach with Aqua Hot option:
  • Disconnect A9 red 8 ga and A10 black 8 ga at breakerboard in compartment
  • Any coach with Primus option:
  • Unplug all connections on boilers
  • Disconnect #8 black at control panel inside coach

 

 

 

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