Truck Air Brake Valves Explained: Types, Functions and Failure Symptoms
How each truck air brake valve works, failure symptoms and OE-quality replacements. Foot, relay, unloader and levelling valves explained by VADEN ORIGINAL.
Heavy-Duty Truck Technical Blog: Air Brakes, Compressors, Parts & Maintenance
Expert resources for heavy-duty professionals: technical guides on air brake systems, compressors, transmission and engine parts, failure symptoms, maintenance intervals and OE cross-reference charts.
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Recent Posts
Brake Safety on Long Descents: What Is Brake Fade, and How Do You Use the Retarder and Engine Brake?
Learn what brake fade is, how retarders and engine brakes work, and the correct technique for safe air brake management on long descents.
What Is a Fuel Injector? How to Recognize Injector Failure Symptoms
Learn what a diesel injector does, common failure symptoms, causes, and maintenance tips for heavy commercial vehicles from VADEN ORIGINAL.
What Is AdBlue? What Does It Do, and What Happens When It Runs Out?
What is AdBlue, how does the SCR system reduce NOx, and what happens when it runs out? A complete guide for heavy commercial vehicles.
What Is an EGR Valve? Failure Symptoms and Cleaning (Heavy Commercial Vehicles)
Learn what an EGR valve does, common failure symptoms, causes, and proper cleaning/replacement guidance for heavy commercial diesel vehicles.
Diesel Fuel Filter and Water Separator Filter: Function and Replacement Interval
Learn what a diesel fuel filter and water separator do, clogging signs, and the right replacement interval for heavy commercial vehicles.
Burnt Cylinder Head Gasket: Symptoms and Causes
Learn the symptoms and causes of a burnt cylinder head gasket in heavy commercial vehicles, testing methods, and the correct repair approach.
Choosing Aftermarket Truck Brake Components
Learn how to evaluate aftermarket truck brake components for fit, durability, air brake performance, and supply reliability in fleet service.
Heavy Duty Air Brake Parts That Hold Up
Heavy duty air brake parts affect safety, uptime, and service cost. Learn what matters in selection, fit, materials, and supply quality.
What Is a Turbocharger? Turbo Failure Symptoms in Diesel and Heavy-Duty Vehicles
Learn what a turbocharger does, how it works, and the key symptoms of turbo failure in trucks and buses. VADEN ORIGINAL engine parts guide.
What Is a Retarder? How Does It Work and What Does It Do?
Learn what a retarder is on heavy trucks and buses, how hydraulic and electromagnetic retarders work, common faults, and maintenance tips.
Low Engine Oil Pressure: Symptoms, Causes, and the Role of the Oil Pump
Learn the causes and symptoms of low engine oil pressure in heavy commercial vehicles, oil pump failure signs, and VADEN ORIGINAL oil pump solutions.
Clutch Master and Slave Cylinder Failure Symptoms
Symptoms, causes, and VADEN ORIGINAL solutions for hydraulic clutch master and slave cylinder failure in heavy commercial vehicles.
Choosing an Air Brake Compressor Manufacturer
How to evaluate an air brake compressor manufacturer for quality, fit, supply, and long-term performance in commercial vehicle aftermarket.
Automated Manual Transmission (AMT) and Shifting Cylinder: Gear Shift Failures
This article examines how AMT transmissions work, the role of the shifting cylinder, and the symptoms and causes of gear shift failures in heavy commercial
Thermostat Failure Symptoms: Why Does the Engine Warm Up Slowly or Overheat?
Thermostat failure symptoms in heavy commercial vehicles, the causes of slow engine warm-up and overheating, and a guide to proper maintenance and timely r
Choosing a Commercial Vehicle Spare Parts Manufacturer
How to evaluate a commercial vehicle spare parts manufacturer for quality, fit, supply continuity, and technical confidence in heavy-duty fleets.
Engine Overheating: Causes and Cooling System Failures
Causes of engine overheating in heavy commercial vehicles, warning signs of an overheating engine, and a maintenance guide against cooling system failures.
Power Steering Pump Failure Symptoms: What to Watch for in Heavy-Duty Commercial Vehicles
Symptoms, causes, and maintenance solutions for hydraulic power steering pump failures in heavy-duty commercial vehicles. A guide to heavy steering, pump n
Heavy-Duty Air Suspension Failures: Air Springs, Leveling Valves and ECAS
Symptoms, causes and the correct maintenance approach for air spring, leveling valve and ECAS failures in heavy commercial vehicles.
Air Brake Fault Diagnosis: Symptom, Cause, and Solution Guide
Symptoms, causes, and correct solutions for air brake faults in heavy commercial vehicles; a practical diagnosis guide for air leaks, low pressure, and val
Air Compressor Failure Symptoms: No Air Pressure or Compressor Pumping Oil
Symptoms of air compressor failure in heavy commercial vehicles, the causes behind issues such as the compressor pumping oil and low air pressure, and main
Winter Air Brake Maintenance: Freezing, Moisture, and Prevention
An informative guide on air brake freezing, moisture accumulation, and air dryer cartridge maintenance in heavy commercial vehicles during winter.
EURO7 and Brake Dust Emissions: Impact on the Heavy-Duty Vehicle Sector
The changes EURO7 regulation brings to brake dust emissions in heavy commercial vehicles, its implementation timeline, and its impact on the sector.
