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Just changing the Vw timing belt isn't enough. Why? Most Vw timing belt failures can be caused by worn timing belt tensioners and idlers. If you just replace the Vw timing belt, a thousand miles later it can fail due to a worn timing belt tensioner, idler or roller and still cause major engine damage. Not replacing ALL Vw timing belt components can be very dangerous. This is because the Vw timing belt tensioner pulleys or rollers may visually appear to be fine, but may actually be near or at the end of their service life. That's is why the Vw timing belt tensioner and idlers should always be replaced when installing a new timing belt. Skipping their replacement is a hazardous choice. This probability is also the reason why most Vw mechanics recommend performing the Vw timing belt replacement before 60,000 miles.
When an Vw timing belt tensioner roller fails, it is usually due to the breakdown of the bearing and seal. Some think that they can just relubricate the bearing when changing the Vw timing belt. This isn't the case. Extreme hot engine temperatures, dirt, environmental, and other related factors cause the deterioration of the bearing seal. The grease inside of the bearing also begins to breakdown. The grease then escapes and brings the Vw timing belt tensioner bearing to the end of it's service life. There are many different reasons for their limited life span. Vw timing belt idlers, tensioners, pulleys or rollers can in some cases have even a shorter service life than an Vw timing belt. Some reasons are Vw timing belt tension or load, type of engine, varying environment factors, Vw timing belt tension location, tensioner bearing design, the type of roller bearing grease, and operating temperature. All of these factors can effect the Vw timing belt service life. The idler pulley or roller can then seize and cause the Vw timing belt to snap without warning. |
Vw Timing Belt Tensioning Damper - Recommended for V6 30V owners!
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Vw Drive Belts (a.k.a. drive v belts)
Vw Drive Belts (a.k.a. serpentine multi-rib belts)
Vw Thermostat
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TECHNICAL TIP: Service Bulletin Related To The Removal Of The Front Crankshaft Timing Belt Pulley - 30 Valve Models
Vw timing belt replacement technical tips. Coming Soon!
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