This is a Belt Tensioner designed for Volvo D13 engines and FH trucks, ensuring optimal tension on the serpentine or V-belt. It maintains consistent belt pressure, which is crucial for the proper functioning of accessories like the alternator, power steering pump, and air conditioning compressor. A worn or broken tensioner will cause the belt to slip, leading to a loss of power to these accessories and potential belt damage.
Always verify with serial number before ordering.
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Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
A worn belt tensioner will first manifest as a persistent squealing noise from the engine bay, especially during startup or acceleration. If ignored, the tensioner may fail completely, causing the accessory belt to slip or break, leading to a loss of function for critical components like the alternator and water pump. This can result in overheating and a dead battery, potentially stranding the vehicle.
Before installing the new tensioner, inspect the mounting bolt hole for any damage or cross-threading. Ensure the new tensioner is aligned correctly with the belt path to prevent premature wear.
Inspect the accessory drive belt for cracks, fraying, or glazing, and check the condition of all accessory pulleys when replacing the belt tensioner.