ROLLER GP-CARRIER 6Y3908 - Caterpillar

Never disconnect any charging unit circuit or battery circuit cable from the battery when the charging unit is operating. A spark can cause the combustible gases that are produced by some batteries to ignite.Check the electrical wires daily for wires that are loose or frayed. Tighten all loose electrical wires before the engine is operated. Repair all frayed electrical wires before the engine is started.Grounding Practices
Proper grounding is necessary for optimum engine performance and reliability. Improper grounding will result in uncontrolled electrical circuit paths and in unreliable electrical circuit paths.Uncontrolled electrical circuit paths can result in damage to main bearings, to crankshaft journal surfaces, and to aluminum components. Uncontrolled electrical circuit paths can also cause electrical activity that may degrade the engine electronics and communications.For the starting motor, do not attach the battery negative terminal to the engine block.Use a ground strap to ground the case of all control panels to the engine block.Ground the engine block with a ground strap that is furnished by the customer. Connect this ground strap to the ground plane.Use a separate ground strap to ground the battery negative terminal for the control system to the ground plane.Rubber couplings may connect the steel piping of the cooling system and the radiator. This causes the piping and the radiator to be electrically isolated. Ensure that the piping and the radiator is continuously grounded to the engine. Use ground straps that bypass the rubber couplings.Ensure that all grounds are secure and free of corrosion.