Information - Tensioner pulley

The main symptom of a faulty alternator belt tensioner is a characteristic whistle, which appears when the car`s electrical systems are submitted to loads, for example, when turning on headlights, high beam or the radio. Apart from that, the indicator for alternator belt failure can light up. This may indicate either wear out of the alternator belt, or that it is insufficiently stretched. The alternator belt is usually located under the hood to the left side of the engine, if standing face to the vehicle.

Before inspecting the alternator belt, you must always turn off the engine, remove the start key and disconnect the negative lead from the car battery. Then, you must visually inspect the belt for any signs of wear out, such as loss of elasticity, tears, cracks or elongations. If there is no problem spotted and the belt doesn`t look worn out, check if it is properly tightened. If you want to change the alternator belt, you will have to weaken its tension. This will ease the removing of the old belt. Unscrew the tensioner bolt nut. Before doing this, make sure that you know the exact location of the tensioner and that you are familiar with its mechanism. The tensioner device can be represented as a tensioner bolt, or a semicircular rack, depending on the vehicle`s model.

If you need to buy an alternator belt tensioner, don`t waste your time for car parts shopping or garage visits. This means not only loss of time, but also significant overpay. Come to our online store. We offer to our customers a vast selection of tensioners for any car brand. Order the necessary part and we will deliver it in a short time.

Apart from alternator belt tensioners, we offer other replacement parts, such as damper bearings, ignition coils, oil pans or vaporizers.

What you need to know about tension roller: lifetime limits, common defects and their signs, tips and recommendations

The timing belt tension roller should be replaced every 80 000 - 120 000 operational kilometers. Also, you should install a new component at every timing belt replacement. Moreover, premature tension roller replacement can be needed if bearing of the part breaks down.

Unusual sound at running engine (screeching, creaking) is a sign of the timing belt tension roller defect. Diagnostics of the part should be performed at a service station. It will be inspected and tested there. Particularly, if the roller heats up at running engine it means it needs replacement. Moreover, the part will be checked for free play towards the mounting axle: it also points at tension roller defect.

Replacement of the timing belt tension roller as well as that of the timing belt itself, is performed only at a service station because incorrect installation of the timing mechanism parts can lead to heavy engine breakdowns. Before demounting the tension roller and the timing belt, some auxiliary equipment is removed including the roller and the alternator v-belt or poly-V belt. These components are also inspected for presence of wear signs. Specialists can recommend you to buy and install a kit if necessary, it can include the poly V-belt tension roller and the alternator belt itself.

Tensioner pulley at low cost: Top Spares

Tensioner Pulley, v-ribbed belt Ø: 80,00mm (RIDEX, 310T0003) -19%
Tensioner Pulley, v-ribbed belt | RIDEX 310T0003 Article №: 310T0003
RIDEX Tensioner Pulley, v-ribbed belt 310T0003
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£ 8,90
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Over 100 items in stock
  • Diameter [mm] 80,00
  • Width [mm] 25,00
  • Condition  New
Details
Tensioner Pulley, v-ribbed belt RHY Driven unit: alternator for vehicles without air conditioning (RIDEX, 310T0016) -19%
Tensioner Pulley, v-ribbed belt | RIDEX 310T0016 Article №: 310T0016
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Tensioner Pulley, v-ribbed belt Ø: 80,00mm (RIDEX, 310T0012) -19%
Tensioner Pulley, v-ribbed belt | RIDEX 310T0012 Article №: 310T0012
RIDEX Tensioner Pulley, v-ribbed belt 310T0012
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Over 100 items in stock
  • Diameter [mm] 80,00
  • Width [mm] 24,50
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Tensioner Pulley, v-ribbed belt (DT, 4.65484) -19%
Tensioner Pulley, v-ribbed belt | DT 4.65484 Article №: 4.65484
DT Tensioner Pulley, v-ribbed belt 4.65484
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Over 100 items in stock
  • Width [mm] 26
  • Weight [g] 114
  • Belt Pulley Ø [mm] 65,2
  • Number of grooves 6
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Details
Tensioner Pulley, v-ribbed belt Ø: 65mm, with fastening material (SKF, VKM 32046) -19%
Tensioner Pulley, v-ribbed belt | SKF VKM 32046 Article №: VKM 32046
SKF Tensioner Pulley, v-ribbed belt VKM 32046
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  • Diameter [mm] 65
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  • Alternative Repair Kit VKM 32200-1
  • Supplementary Article/Info 2 with fastening material
  • Condition  New
Details
Tensioner Pulley, v-ribbed belt Ø: 80,00mm (INA, 531 0718 10) -19%
Tensioner Pulley, v-ribbed belt | INA 531 0718 10 Article №: 531 0718 10
INA Tensioner Pulley, v-ribbed belt 531 0718 10
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Over 100 items in stock
  • Diameter [mm] 80,00
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Tensioner Pulley, v-ribbed belt Ø: 80mm (SKF, VKM 38001) -19%
Tensioner Pulley, v-ribbed belt | SKF VKM 38001 Article №: VKM 38001
SKF Tensioner Pulley, v-ribbed belt VKM 38001
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Over 100 items in stock
  • Diameter [mm] 80
  • Width [mm] 25
  • Tensioner Pulley Actuation Manual
  • Condition  New
Details
Tensioner Pulley, v-ribbed belt Ø: 70mm (CAFFARO, 500251) -19%
Tensioner Pulley, v-ribbed belt | CAFFARO 500251 Article №: 500251
CAFFARO Tensioner Pulley, v-ribbed belt 500251
£ 9,49
£ 7,69
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Over 100 items in stock
  • Diameter [mm] 70
  • Width [mm] 24
  • Inner diameter [mm] 17
  • Material Plastic
  • Condition  New
Details
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