If you are unsure whether you have a cambelt or not, contact us today and we will advise you.
Sometimes referred to as the ‘timing’ belt. Cambelts are made from rubber, reinforced with cord or fibre glass, which are notched along the inner face to form equally spaced teeth. The belt is driven by the crankshaft pulley and drives the camshaft pulley or in the case of double overhead cam engines, pulleys. The pulleys have teeth around their circumference that mesh exactly with the teeth on the cambelt to ensure that when the valve timing is set it is maintained. This arrangement is very common on modern overhead valve engines as it is a comparatively cheap, quiet and efficient way of driving the camshaft when it is mounted far away from the crankshaft. On some vehicles the water pump is driven by the cambelt and it again is good practice to replace this when the belt is changed.
Cambelts have a life span and must be checked and replaced in accordance with manufacturer’s guidelines. Cambelt replacement inline with manufacturers guidelines is important as failure could cause damage to the engine. If the cambelt fails it can result in catastrophic failure causing significant internal damage to the engine, this is because when the cambelt fails, the camshafts will stop turning but the crankshaft will continue to rotate. Most modern engines are known as ‘interference’ engines, which means that if the valve timing is not maintained then the pistons will strike any open valves.
Cambelts can fail for a variety of reasons: foreign bodies can enter the drive, oil leaks can contaminate the belt, pulleys can seize or become misaligned, belt tension can be incorrect and the belt can be affected by temperature extremes. If you are unsure whether you need a cambelt replacement, we can provide an inspection to check the current condition of your cambelt.
Bromley Garage Services Ltd , Poplar Lane , Winnersh , Berkshire RG41 5JR
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