The Cost of Mismatched Tires

With the rapid increase in heavy vehicle running costs, the following tips on how to match your tyres will undoubtedly see you extract a few extra thousand kilometres out of your tyres. But ultimately, it will make all the difference to your bottom line. Furthermore, it might even save you costly downtime from changing a…

How Hub Reduction Differentials Work

Regular readers would recall that we’ve reported on several tri-drive units operating in high productivity heavy road train applications over the last few years. Truth be told, the site of a tri-drive or “tridem” road train with four to six trailers in tow is indeed an impressive sight. Their daily payloads undoubtedly would have made…

How truck air compressors work

The primary function of a truck air compressor is to supply compressed air for the truck air suspension and braking system. Typically, this type of compressor is driven by the truck’s engine. The air compressor builds the air pressure for the air suspension, auxiliary components and brake system. In most cases, the air compressor is…

How Cummins PT Fuel pump works

How Cummins PT Fuel System works Little did farm boy, Clessie Cummins, from Indiana, realise his innovative invention of his technological advanced (for the time) PT fuel injection system in the early fifties would revolutionise diesel engine economy, efficiency and reliability. Nor did he ever envisage that it would endure seven decades of production. Cummins…

How a truck DPF works

In trucking terms, the acronym DPF refers to the Diesel Particulate Filter used in the exhaust system of trucks built after 2009. Its purpose is to trap the particulate matter or soot produced from the engine and prevent it (down to 1-micron) from exiting the exhaust pipe. A poorly maintained or blocked PDF will cause…

How to drive an 18-Speed Roadranger

How to drive an Eaton 18-Speed Roadranger Eaton’s 18-Speed Roadranger Driver’s Instruction manual available for download at end of article.  Driving a constant mesh transmission like a 13-speed or 15-speed Roadranger transmission correctly used to be a fundamental part of truck driving, and old school truck drivers took great pride in the way they swapped…