16 SEBU7901-01 Product Information Section General Information Product Information Section General Information i01472899 Welding on Engines with Electronic Controls SMCS Code: 1000 NOTICE Because the strength of the frame may decrease, some manufacturers do not recommend welding onto a chassis frame or rail. Consult the OEM of the equip- ment or your Caterpillar dealer regarding welding on a chassis frame or rail. To help avoid damage to the electronic controls, proper welding procedures are necessary. Before you weld on equipment with electronic controls, observe the following precautions: 1. Turn off the engine. Place the engine control switch in the OFF position. 2.
If the engine has a battery disconnect switch, open the switch. Otherwise, disconnect the negative “-” battery cable from the battery of the equipment. NOTICE Do not ground the welder to electrical components such as the ECM or sensors. Improper grounding can cause damage to the drive train bearings, hydraulic components, electrical components, and other com- ponents. Clamp the ground cable from the welder to the com- ponent that will be welded. Place the clamp as close as possible to the weld. This will help reduce the pos- sibility of damage. 3. Clamp the ground cable from the welder to the component that will be welded. Place the clamp as close as possible to the weld. 4.
Protect wiring harnesses from welding debris and from spatter. Use proper welding procedures.