The Nissan Xterra Timing Belt properly synchronizes the crankshaft and camshaft so the engine valves open and close at the precise time with piston movement. The Timing Belt is a flexible loop of fiber reinforced material and is designed to mesh with the toothed sprockets on both shafts. A dedicated tensioner plus idler pulleys keep the Timing Belt tight. This helps conserve exact alignment. The Timing Belt has a quieter operation, does not require lubrication and allows easier routing in overhead cam applications, as applied in the Nissan Xterra engine, due to replacing heavier chains and gears. A failed or damaged Timing Belt can halt the engine instantly. On interference designs, internal parts may collide, causing severe damage. A weak tensioner or wear that does not break can cause a belt to jump time and create hard starting or poor performance. It is recommended that the condition of the Nissan Xterra should be checked regularly for cracks, missing teeth, fraying or fluid contamination. Moreover, follow the manufacturer's change interval for the Nissan Xterra with fresh tensioner and idler parts at each service to keep the Nissan Xterra running reliably.
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