Parts of a Semi-Truck Engine
Semi-truck engines are some of the most complex machines on the road. It consists of many parts, each of which has a specific function to create power and movement and to ensure that the engine runs smoothly. While some fleets have opted for natural gas sources, diesel engines remain most trucks' primary power source.
Regardless of the type, trucks are responsible for moving 72% of the goods we consume daily. For this reason, it is essential for individuals responsible for the regular maintenance and repair of 18-wheelers to understand the parts that keep the truck's engine functioning properly to ensure that it is well-rounded and maximized for long hauls.
This article will introduce you to the wide range of engine semi-truck parts and explain what each one does.
Electrical Systems
The electrical systems of a commercial truck, consisting of a battery, alternator, and starter motor, are responsible for providing power to the vehicle's components. A truck can't operate without an electrical system, especially in today's day and age when almost all engines are computer controlled.
Torque Converters
Torque converters transfer driving power from an engine to a drive shaft. They achieve this by using a fluid coupling instead of a direct mechanical connection. This allows the engine to run at its ideal speed while the drive shaft can rotate at whatever speed is needed.
Clutches
Most heavy trucks have a push-pull clutch, while trucks with high torque have a two-plate one to increase the friction area and avoid slippage. Generally, these allow the engine to be disconnected from the transmission so you can stop the vehicle without stopping the engine.
Transmissions
Truck transmissions take the rotating force from the engine, send it through a complicated gear mechanism, and then turn the drive wheels. The timing of the valves is critical for creating the proper pressure in the cylinders and getting the engine up to speed. Manual, automated manual, or automatic transmissions are available for heavy-duty trucks.
Axles
Axles help in transmitting power from the engine to the wheels. A system of gears connects them to the engine and the wheels, enabling them to rotate at different speeds. Axles help truckers keep their trucks from sliding, especially when it is snowing.
Drive Shafts
Drive shafts are tubes attached to the output shaft of a transmission with flanges or end yokes. Their purpose is to deliver torque from the transmission to the differential and, from there, to the wheels in order to move the truck. They facilitate the mobility of the drive axles.
Some Other Commonly Replaced Semi Truck Parts
Tires
The tires on a commercial truck are critical for the safety of the driver and other motorists. The tires need to be in proper condition so you can properly handle the truck on the road.
Mirrors
There are several mirrors found on a semi-truck. You can use mirrors for various purposes, such as viewing the front and sides of a truck or viewing the trailer. Be aware that dirt, rocks, or other debris can easily damage and scratch them, so regular maintenance is needed.
Headlights
Semi-truck headlights serve the same purpose as those on other vehicles, enabling the driver to see and be seen clearly. Before you set off, check your headlights for burning, dimming, or flickering bulbs.
Brake Pads
Brake pads are made of rigid material that can withstand heat and friction while stopping the truck. Particularly in the case of heavy trucks, you should have your brakes inspected and replaced every three to five years to ensure safety.
Clutch
A clutch allows the driver to engage and disengage the transmission. If your clutch is damaged, your ride may be unsteady, resulting in wear and tear on your truck. You should have the clutch inspected if anything seems out of the ordinary.
Conclusion
Looking for a wide range of semi-truck engine parts to suit your custom specifications? Look no further than Heavy Duty Pros.
The keyword search bar in our online catalog makes it easy to locate the truck parts you need. If you find a part that meets your specific engine requirements, add it to your cart and proceed to checkout.
You can count on Heavy Duty Pros for anything your vehicle needs. For inquiries, call our customer service at 888-919-PROS (7767).
FAQs
What are the Parts of a Semi-Truck?
The main parts of a semi-truck include the tractor unit, the trailer, and the wheels. The tractor unit contains the engine and cab for the truck driver. The trailer attaches to the back of the tractor unit and contains the cargo. The wheels support the truck's weight and keep it moving on the road. Each central part requires its own parts to function cohesively.
What are the Main Parts of a Semi-Truck That Need Replacing?
The most common main parts of a semi-truck that need replacing include the headlights, transmission parts, mirrors, engine parts, and brake pads. All these parts will wear out and need to be replaced over time, so it is best to choose a reputable dealer, such as Heavy Duty Pros, to get high-quality semi-truck parts and accessories.