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How To: Perform a Heavy Duty Headlight Restoration
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By mariozhu
The headlight design of D-Max closely follows the trend of modern automobile aesthetics. It is not only highly recognizable, but also incorporates fashion and sporty elements. The front face adopts an impactful design, with a large chrome-plated grille, and the headlights are the finishing touch of this design, showing a sharp and divine light. The headlights of all series are equipped with projector lenses as standard, which not only have a unique shape, but also ensure that the focus and distribution of light are more even, improving the lighting effect at night and in bad weather conditions.
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By Counterman
The parts industry is a very diverse marketplace. While the landscape is mostly dominated by retail chains and jobber stores serving the general automotive and light truck segment, there are several other specialized parts vendors catering to imports, collision and refinish, powersports, ag and turf, and OEM vehicle brands. Each requires its own unique set of skills, including the heavy truck market.
For many of us behind the counter, our only experiences with heavy trucks are when stock orders are delivered to our stores. Heavy-duty parts specialists work in a very different setting than the “year, make, model” format of retail parts, or the VIN-driven world of a dealership parts department. On those occasions when even a veteran P2-certified parts specialist is presented with a request for heavy-duty parts, we are required to think a little differently and be prepared to dig a little deeper to find solutions.
Trucks are classified by their gross vehicle weight rating (GVWR), with light trucks like Tacoma, Silverado 1500, F-250, and Ram 3500 representing classes 1-3, up to 14,000 pounds. Medium duty (14,001 to 26,000 pounds) covers class 4, 5, and 6, including models like the Ram 4500, F550, and Kodiak 6500. These medium-duty trucks all feature hydraulic brake systems, and are sometimes catalogued alongside their light-duty counterparts. Heavy-duty vehicles, on the other hand, are catalogued primarily by the major components used to build the vehicle.
Heavy duty generally describes class 7 and 8 trucks, with a GVWR over 26,000 pounds. Some class 7 trucks feature hydraulic or air-over-hydraulic brake systems, but the majority of trucks in these two classes rely on air brakes to stop these heavily loaded vehicles. Air brakes operate much like hydraulic brakes, using air pressure instead of hydraulic fluid to apply brake force when the pedal is depressed. Air pressure is created by an on-board compressor, and distributed through a series of valves and tubing to the foundation brakes (disc or drum brake components). Semi-trailers, when coupled to the tractor’s air supply, operate the same way. In case of a drop in air pressure, spring-loaded parking brakes serve as an automatic emergency brake.
Cataloguing foundation brake parts often requires a combination of measurements, identification of manufacturer-specific design elements, and even axle model numbers. Air components require the understanding and identification of thread pitch and sizing, cross-referencing numbers from multiple vendor information sources, and a solid understanding of what each type of valve does within the system.
Engine, drivetrain and suspension components are similarly dependent on how an individual truck was spec’d from the factory. A cement mixer or tri-axle dump truck requires a considerably heavier suspension design than an over-the-road tractor regularly hauling van body trailers full of potato chips. Even within the same model range, a truck manufacturer might offer engines from Cummins, Caterpillar or Detroit, each one mated to one of several manual or automatic transmission options from Eaton, Fuller or Allison. Throw in Rockwell, Eaton or Dana axle packages in one of a dozen different gear ratios, and the combinations become nearly unmanageable.
In our automotive cataloguing, those drivetrain options (and most other parts requests) would generally be found through a simple year/make/model search, but with HD parts, that’s only the beginning. At the dealership level, VIN entry yields a copy of the build sheet or bill of materials (BOM) with the relevant options identified, and OE part numbers called out in the electronic catalog. For aftermarket professionals, its off to various manufacturer catalogs, searching individual component or assembly model numbers and/or serial numbers to collect part information. With more focus on identification of standalone parts that are not necessarily exclusive to one vehicle manufacturer, it simply requires a different approach than what many parts specialists are used to.
There are instances when traditional aftermarket catalog skills come into play, and many of your existing light vehicle vendors also offer HD parts solutions. Your WD or DC might not stock a full line of heavy-duty parts, but many basics like filtration, lighting, belts, rotating electrical and batteries are often only a daily order away. For slower-moving HD-specific parts, special ordering from existing vendors is often a realistic possibility, assuming your customer can absorb the downtime.
Most heavy-duty customers are commercial operators, and time spent waiting on parts is money lost for their businesses and yours. Quick turnaround times for these orders are an everyday expectation in the HD world, so last-moment requests and expedited shipping charges are common. For a parts specialist who enjoys a challenge, the occasional HD parts lookup represents a chance to flex their interchange and cross-reference muscles, and maybe even learn new ways of problem-solving that can be applied to their “regular” daily tasks!
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By TT-ABC
TT-ABC produces various brands of car headlights and taillights. For example, Toyota (Camry, 4Runner, Land Cruiser, FJ Cruiser, Prado, Highlander, Avalon, CHR), Honda (Accord, Civic, Jazz, CR-V), BMW, Mercedes-Benz, Lexus, Ford, Tesla, Land Rover, Dodge, Chevrolet, Mitsubishi, Cadillac, Nissan, Hyundai, etc. We support bulk purchases and custom development. We launch new products every month. You can follow our social media accounts and our official website (search "TT-ABC" on Google). We have sales promotions on various platforms. You can search TT-ABC on various platforms to find us. Our company has always been known for its service. Our headlights and taillights have a one-year warranty and 24-hour quick response.
This is our official store:
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