AIR COMPRESSOR GP 1636367 - Caterpillar

Proper grounding for the machine systems and the engine electrical systems is necessary for machine performance and reliability. Improper grounding will cause the electrical circuits to be uncontrolled. The paths will be unreliable.Uncontrolled engine electrical circuit paths can result in damage to main bearings, crankshaft bearing journal surfaces, and aluminum components.Uncontrolled electrical circuit paths can cause electrical noise. This noise may degrade the machine performance and the radio performance.A direct path to the battery must be used in order to ensure the proper functioning of the machine systems, the engine electrical systems, and the engine-to-frame ground strap.Ground wires and straps should be combined at ground studs. The ground studs should be dedicated for ground use only. At every 250 hours, inspect all of the engine grounds. All grounds should be tight and free of corrosion.
When boost starting an engine, follow the instructions in Operation and Maintenance Manual, "Engine Starting" to properly start the engine.This engine is equipped with a 24 volt starting system. Use only equal voltage for boost starting.
The engine has several input components which are electronic. These components require an operating voltage.Unlike many electronic systems of the past, this engine is tolerant to common external sources of electrical noise. However, electromechanical alarms can cause disruptions in the power supply. The engine's electronic control module (ECM) is powered through two power sources. One power source comes directly from the battery through a circuit breaker. The other power source comes through the keyswitch and another circuit breaker. Disconnect the power with the disconnect switch for the main power. The switch is by the battery box.