Precautions For Welding

TS953-UN-15MAY90

IMPORTANT: Welding on an engine is not recommended. If welding must be performed, follow the following precautions.

IMPORTANT: ALWAYS disconnect Engine Control Unit (ECU) connectors and battery before welding on engine or machine. High currents or electro-static discharge in electronic components from welding may cause permanent damage. Remove battery or flammable liquid lines if welding near those items.

1. Disconnect connectors from ECU.

2. Disconnect battery cables from battery.

3. If necessary, disconnect flammable liquid lines or battery.

4. Connect welder ground to same engine component as the welding point and be sure ECU or other electronic components are not in ground path.

5. Never connect welder ground to crankshaft damper or pulley, engine flywheel, or any driveline components. Be sure that engine bearings are not in ground path, as this can create bearing damage.