How-tos

SPN 1569 FMI 31 causes engine derate and power loss. Learn real causes, diagnosis steps, and proven fixes to reduce downtime.

A seized gland can stop your job cold. This guide details how to safely remove a hydraulic cylinder end cap using the right tools and techniques. Learn pro tricks for dealing with rust, corrosion, and even the most stubborn caps.

Engine sputtering but your spark plug looks clean? The real problem might be invisible. A simple multimeter test can uncover a hidden failure inside your spark plug. Stop guessing and start testing! Learn the 4 easy steps to diagnose your off-road machine’s engine woes for good.

The P0880 fault code on off-road equipment usually points to a transmission control module power supply issue—not internal transmission failure. From blown fuses and faulty relays to corroded grounds and chafed wiring, this guide explains the real-world causes behind P0880, common symptoms like harsh shifting or limp mode, and a step-by-step diagnostic approach using voltage and load testing. By focusing on power distribution first, operators and technicians can fix the root cause quickly, avoid unnecessary transmission repairs, and keep heavy machines productive in harsh working conditions.

A faulty TPS causes major performance issues in your equipment. This guide covers key throttle position sensor symptoms, from engine hesitation to erratic shifting, and shows you how to test, diagnose, and replace the sensor yourself.

Diesel engine maintenance is the foundation of reliable off-road equipment performance. From airflow and fuel filtration to cooling systems and emissions components, disciplined maintenance habits help prevent overheating, power loss, and unexpected derates. This guide breaks down practical diesel truck maintenance strategies that also apply to loaders, excavators, dozers, and other diesel-powered machines—helping operators reduce downtime, protect high-cost components, and plan part replacements before minor issues turn into major repairs.

This guide shows you the coolant temperature sensor location on heavy machinery. A faulty sensor can cause bad fuel economy, black smoke, and overheating. We’ll cover the symptoms, common trouble codes, and a step-by-step replacement guide.

When your oil pressure is high, it’s a serious warning. It doesn’t mean better lubrication; it means a blockage is starving your engine. This guide covers the common causes—from the wrong oil to a clogged filter—and how to fix them.

Is your tractor or excavator losing power or misfiring? A bad ignition coil could be the culprit. This guide shows you how to test an ignition coil using simple methods like the power balance test, spark check, and multimeter measurements.

A failing serpentine belt on a 6.7 Cummins engine can quickly lead to charging issues, overheating, and accessory failures in off-road machinery. This guide explains what the serpentine belt does, when it should be replaced, and how to install it correctly while inspecting related components like tensioners and idler pulleys. By treating the belt as part of a complete accessory-drive system, operators can prevent repeat failures and reduce costly downtime.

Spotting a head gasket leak early can save your engine. Watch for key symptoms like overheating, a major drop in power, milky engine oil, or constant white exhaust smoke. This guide covers the common signs, causes, and tests.

Think you know how to use your snow blade? Pros use 5 simple patterns to plow faster and smarter. Learn back-dragging, windrowing, and how to stack snow high without damaging your lawn. This guide turns your winter chore into a skill.