CONE BRG 6I8660 - Caterpillar

Do not weld near the thermal detection wire. Heat from welding may cause the thermal detection wire to activate the fire suppression system.
When performing any machine maintenance or service, the fire suppression system must be isolated. If equipped with fire suppression system, isolate the system. Refer to this Operation and Maintenance Manual.Note: Machines built with the optional factory installed fire suppression are equipped with a backup battery. The fire suppression system will remain powered when the machine battery disconnect switch is in the OFF position.
Turn off the engine. Place the engine start switch in the OFF position.
If equipped, turn the battery disconnect switch to the OFF position. If there is no battery disconnect switch, remove the negative battery cable at the battery.
Do NOT use electrical components (ECM or sensors) or electronic component grounding points for grounding the welder.
Clamp the ground cable from the welder to the component that will be welded. Place the clamp as close as possible to the weld. Make sure that the electrical path from the ground cable to the component does not go through any bearing. Use this procedure to reduce the possibility of damage to the following components:
Bearings of the drive train
Hydraulic components
Electrical components
Other components of the machine
Protect any wiring harnesses and components from the debris and the spatter which is created from welding.
Use standard welding procedures to weld the materials together.