CABLE AS 2136665 - Caterpillar

Speed Limiter
An engine speed limiter device is located in the governor housing and actuated by engine oil pressure. When the engine is started, engine speed is limited to approximately 1160 RPM until oil pressure reaches 8-10 PSI. A spring forces plunger (2) out and prevents stop (1) from advancing the rack until sufficient lubricating pressure is obtained.When engine oil pressure reaches 8-10 PSI, pressure from the spring is overcome and plunger (2) moves back into the housing allowing unrestricted movement of stop (1). A drilled hole in plunger (2) relieves air pressure from behind the plunger and vents oil that leaks between the plunger and plunger bore.
SPEED LIMITER-BELOW OPERATING PRESSURE
1-Stop. 2-Plunger.When the lever has been advanced past the speed limiter plunger and oil pressure drops below 8-10 PSI, the speed limiter will not function until stop (1) is returned to the LOW IDLE position and moved forward again.Electrical System
The electrical system is a combination of three separate electric circuits: the charging circuit, the starting circuit and the lighting circuit. Each circuit is dependent on some of the same components. The battery (batteries), disconnect switch, circuit breaker, ammeter, cables and wires from the battery are common in each of the three circuits.
The disconnect switch must be ON to allow any part of the electrical system to function. Some charging circuit components will be damaged if the engine is operated with the disconnect switch OFF.
The charging circuit is in operation when the diesel engine is operating. The electricity producing (charging) unit is a generator or alternator. A regulator in the circuit senses the state of charge in the battery and regulates the charging unit output to keep the battery fully charged.The starting circuit operates only when the disconnect switch is ON and the start switch is actuated.The direct electric diesel engine starting circuit includes a glow plug for each diesel engine cylinder. Glow plugs are small heating elements in the pre-combustion chambers which promote fuel ignition when the engine is started in low temperatures.The lighting and charging circuits are both connected on the same side of the ammeter while the starting circuit connects to the other side of the ammeter.System Components
Generator
The generator is belt driven by the diesel engine. The generator keeps the battery charged and supplies current to operate the electrical components.
This is a cutaway view of a generator.Generator Regulator
This is a generator regulator with the cover removed.The generator regulator controls the output of the generator. The regulator incorporates three controls: the cutout relay, the voltage regulator and the current regulator. Each control has contact points which are operated by electromagnets.Springs hold the cutout relay points open and the voltage regulator and current regulator contact points closed. The spring tension for each unit is a force opposing the force of the electro-magnets.The cutout relay prevents the battery from motorizing a generator that is not producing enough voltage. Generator voltage approximately equal to battery voltage will close the cutout relay points. This closes the circuit between the generator and the