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PERIODICAL INSPECTION AND MAINTENANCE
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12/150_23136625
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C en
Precautions For Welding On Engines Equipped With Electronic
Engine Control Unit (ECU)
IMPORTANT: ALWAYS disconnect Electronic Control Unit
(ECU) connectors and engine control system
−
to
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machine
ground before welding on engine or machine. High currents or
electro
−
static discharge in electronic components from welding
may cause permanent damage.
1. Remove the ground connection for the engine control
system
−
to
−
machine frame.
2. Disconnect the connectors from the ECU.
3. Connect the welder ground close to the welding point and be
sure ECU or other electronic components are not in the ground
path.