Caterpillar C1.7 / C2.2 — Welding on Engines with Electronic Controls
Repair & overhaul · Electronic control system
For the Caterpillar C1.7 / C2.2, from the Caterpillar owner's manual.
Applies to: Caterpillar C2.2
Before you start
- Do not use ECM or ECM sensors or their grounding points for grounding the welder.
Procedure
- Stop the engine and remove the electrical power from the ECM.
- Ensure that the fuel supply to the engine is turned off.
- Disconnect the negative battery cable; open the battery disconnect switch if installed.
- Disconnect all electronic components from the wiring harnesses.
- Connect the welder ground clamp directly to the component being welded, close to the weld.
- Protect the wiring harnesses from welding debris and spatter.
- Use standard welding procedures to weld the materials together.
Full service-parts list: Caterpillar C2.2 →
Source: Caterpillar owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.