Retarder and Heavy-Vehicle Spare Parts Guide
Expert guide articles on retarder and heavy-vehicle spare parts.
- What Is a Retarder and How Does It Work?What is a retarder and how does it work? Electromagnetic (Telma) and hydraulic (Voith) systems, their principle and effect on braking safety.
- Retarder Fault Symptoms and CausesRetarder not working or losing power? We explain retarder fault symptoms, likely causes and when a repair or overhaul is needed.
- Telma vs Voith Retarder: The DifferenceWhat is the difference between Telma and Voith retarders? We compare electromagnetic and hydraulic systems by principle, maintenance and use.
- OEM or Aftermarket? Choosing Heavy-Vehicle Spare PartsWhat is the difference between OEM and aftermarket heavy-vehicle parts? Balancing quality, warranty and cost when choosing original, OEM and aftermarket.
- Retarder Maintenance: Periodic Checks and LongevityHow is retarder maintenance done? A guide to periodic inspection, oil and electrical checks on Telma and Voith retarders to prevent faults.
- When Is a Retarder Overhaul Needed and What It CoversWhen is a retarder overhaul needed? The difference between repair and overhaul, what it covers and how to decide on Telma and Voith systems.
- Heavy-Vehicle Brake System Maintenance and Spare PartsBrake system maintenance for trucks and buses: wear symptoms on linings, drums, brake chambers and ABS components, and how to choose parts.
- Diesel Injector Faults: Symptoms and SolutionsHeavy-vehicle diesel injector fault symptoms: hard starting, power loss, smoke and higher fuel use. Causes of injector and pump faults.
- Turbocharger Fault Symptoms and MaintenanceHeavy-vehicle turbocharger fault symptoms: power loss, smoke, noise and oil leaks. Causes of turbo faults, maintenance and choosing the right spare parts.
- Six Reasons the Wrong Part Gets OrderedWhy does the wrong heavy-vehicle part arrive? Engine code, regrind stage, dimensions and OEM number errors — six common causes with a pre-order checklist.
- Cooling System Faults: Symptoms and CausesHeavy-vehicle cooling system fault symptoms: rising temperature, steam, coolant mixing into oil. Causes of water pump, thermostat and radiator faults.
- Clutch Fault Symptoms and Choosing the Right PartsHeavy-vehicle clutch fault symptoms: slipping, hard gear changes, vibration. Causes of disc, pressure plate and release bearing faults, and why kits matter.
- Valve and Camshaft Wear: Symptoms and CausesHeavy-vehicle engine valve and camshaft wear symptoms: power loss, rough idle, tapping noise. Timing faults and the right way to respond.
- How to Look Up an OEM Part NumberWhere do you find an OEM part number and how do you read it? How cross-reference and equivalent numbers work, and how to find the right part.
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Export parts enquiries are welcome. Send us the OEM number and destination; availability, pricing and shipping terms are confirmed in your quote. Workshop repair and overhaul remain limited to Voith VR115/VR120/VR133 in Türkiye.
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