How-tos

SPN 4364 FMI 31 indicates SCR NOx efficiency issues on off-road equipment. Learn causes, symptoms, diagnostics, and proven fixes to clear derates.

Is your transmission fluid burnt? Stop! Flushing it now could actually destroy your clutch packs. Off-road machines hate neglected fluid, but the wrong fix is worse than no fix. Discover the “half-interval” rule, the 7 deadly symptoms of failure, and how to decide between a full flush and a safe drain.

SPN 102 FMI 18 is a common fault on off-road machinery that signals low intake or boost pressure. This guide breaks down real-world causes, diagnostic steps, and proven fixes to help restore performance and prevent repeat downtime.

Is your engine losing power or smoking? Dirty injectors are a likely cause. This guide explains how to clean diesel injectors step-by-step, from disassembly and ultrasonic cleaning to reinstallation for restored performance.

Weight matters on an off-road jobsite. This guide breaks down F-250 curb weight, GVWR, and configuration differences so you can plan payload, towing, and service work with confidence.

Frequent regens, power loss, and aftertreatment warnings are often signs of a restricted DPF. This guide explains Cummins DPF cleaning methods, when cleaning works, and how proper maintenance helps extend filter life and reduce downtime.

Your Ford tractor serial number is the key to identifying the correct model year and avoiding costly part mistakes. This guide explains where to find it, how to read different formats, and how to use serial ranges to source compatible replacement parts.

Use your snow blower the right way to save time & prevent damage. This pro guide helps you avoid common mistakes that lead to clogs & broken parts. Master wet snow, clear driveways efficiently, and learn the essential safety checks for your machine.

Knowing when to change the fuel filter is crucial for engine health. This guide covers the recommended 250-500 hour interval, signs of a clogged filter like power loss, and why this simple task prevents expensive damage to your fuel system.

Knowing where your fuel filter is located is crucial for maintenance. Heavy machinery has a primary filter on the frame and a secondary filter on the engine. This guide helps you find both and spot the signs of a clog, like power loss.

Experiencing issues with your heavy machinery? This guide details common fuel rail pressure sensor symptoms, from hard starts and power loss to poor fuel economy and black smoke. Learn to spot these red flags and diagnose the problem.

That new roaring sound from your loader isn’t normal. It could be a failing wheel bearing—a countdown to a detached wheel. Learn the 4 signs to watch for before a small noise becomes a major safety hazard and an expensive, downtime-heavy repair. Don’t ignore the warning!