Starters

A starter is an essential electrical component of any heavy-duty vehicles like trucks and semis, initiating the process of starting the internal combustion engine. It works by converting electrical energy from the battery into mechanical energy, which turns the engine’s crankshaft to begin the combustion process.

The starter is typically a high-torque electric motor, paired with a solenoid (starter relay) and a pinion gear. When the ignition switch is turned to the start position, the solenoid activates, sending current from the battery to the starter motor. At the same time, the solenoid pushes the pinion gear into engagement with the engine’s flywheel, and as the motor starts, it rotates the engine’s crankshaft and starts it.

Heavy-duty vehicle starters are designed to handle the increased power demands and torque requirements of large engines, commonly found in construction equipment and transport vehicles. These starters must be more robust and powerful compared to those found in smaller vehicles, making sure they’re reliable and efficient at starting the engine in various conditions. 

Maintaining the starter involves regular inspection for signs of wear and damage, cleaning electrical connections, and making sure the battery is in good general condition to provide adequate power. When starting the vehicle, listen for any abnormal noises, such as grinding or clicking, that could indicate a problem with the starter motor, solenoid, or the gears.

Test the starter motor’s function from time to time, measuring its current draw and voltage drop while starting the engine. Compare the results to the manufacturer’s specifications to determine if the starter is functioning properly.

At Big Rig World, we offer high-quality replacement parts for your heavy-duty trucks and semis, helping you make sure your vehicle runs smoothly and efficiently at all times. Our selection of premium components caters to the unique needs of your specific make and model, guaranteeing optimal performance.