How tight should a belt tensioner be?


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What happens if belt tensioner is too tight?

If a belt is too tight in a system, it can add stress to your bearings. The added stress to bearings can result into over amperage of your motor and potential motor failure.

Should a tensioner pulley wiggle?

If your car’s belt tensioner is wobbling, it is important that you take prompt action and replace the faulty part. Even if you are slightly concerned that your belt tensioner might be wobbling, it is best to take your car to the shop or replace the part yourself.

Can automatic belt tensioner be adjusted?

Cars equipped with an automatic belt tensioner adjust themselves over time and do not require adjustment. This article shows you the process to adjust drive belts on a pivot-style belt adjuster.

How do I know if my tensioner pulley is too tight?

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How do I know if my belt tension is correct?

Hold the belt between finger and thumb at this point and move it from side to side. See how much it deflects at the centre of the run. If it moves more than 1/2 in. (13 mm) it is too slack – any less movement and it is too tight.

Are belt tensioners supposed to move?

Appearance: Cycle the tensioner (mounted on the engine) through the entire range of motion (from stop to stop) by applying torque to the arm with a wrench. The tensioner arm should move smoothly and freely. Solution: If you notice a binding, sticking or grinding tensioner arm, the tensioner should be replaced.

Can I drive with a loose belt tensioner?

Driving with a bad belt tensioner is unsafe since the tensioner is meant to guarantee ample tension that powers accessories. Wear on the belt tensioner will eventually cause the belt to slip, generate loud noise, and also create an unsafe level of heat along the accessory pulleys.

What causes belt tensioner to shake?

Excessive tensioner movement โ€“ Worn-out coil springs can also cause drive belt tensioners to loosen their grip on the drive belt, resulting in excessive vibration and rattling. Too little tension will also lead to belt slippage.

Can you tighten alternator belt too much?

An over-tightened belt can burn out any bearing that the belt rotates on, including alternator, power steering pump, A/C compressor, idler pulleys, etc. An over-tightened timing belt can ruin any pulley bearing it is connected with.

How do you test an automatic belt tensioner?

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Does belt length affect torque?

The size of the belt. The larger the belt section, the greater the tension that can be carried by the belt and the greater the torque and power.

How tight should serpentine?

Half an inch of play is considered the standard alternator belt tightness.

How often should belt tensioners be replaced?

There is no recommended timeframe in which to replace your tensioner, especially as the belt itself usually needs replacing before the tensioner does. However, you should inspect your tensioner each time you service your car to monitor its condition and replace it if necessary.

Can a loose belt cause rough idle?

So if you have searched for answers to the question, can a bad serpentine belt cause rough idle? The answer is yes.

Can a bad belt tensioner cause misfire?

The belt may oscillate between too little tension and too much tension. The belt will slip and catch, causing noise and vibration. This can cause a change in crankshaft speed that can be severe enough to cause the engine management system to think that a misfire just occurred.

What does a loose belt tensioner sound like?

The timing belt tensioner knocking noise is a common sign that drivers notice when their car timing belt tensioner goes bad. If the timing belt goes loose, it starts “knocking” between its connected parts and would keep hitting the timing belt cover.

Does belt tensioner spin freely?

New belt tensioner pulleys do not free spin much. Old pulleys free spin quite easily.

Why do belt tensioners fail?

The most common causes of timing belt tensioner failure include: Wear and tear: On a new mechanical timing belt tensioner system, the timing belt tensioner spring is wound tightly by two tension rods. Over time, the spring stretches out and loses its tension. As a result, the entire tensioner becomes too weak.

How tight should alternator bolts be?

Make sure the bolts are snug enough to hold the alternator in place, but loose enough to slide side to side in the bracket.

How do I make my belt stop squeaking?

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Can serpentine belt mess up alternator?

All these things are controlled by a properly functioning serpentine or V-belt. Once your belt is compromised, it can produce further damage to the vital systemsโ€”such as the alternator, water pump, power steering and air conditioningโ€”that depend on it.

How tight should a belt be on a car?

For most vehicles, the belt should not be able to be pressed down more than ยฝ inch. If it can be pressed lower, then the belt is too loose.

How is torque calculated on a belt?

To calculate load torque, multiply the force (F) by the distance away from the rotational axis, which is the radius of the pulley (r). If the mass of the load (blue box) is 20 Newtons, and the radius of the pulley is 5 cm away, then the required torque for the application is 20 N x 0.05 m = 1 Nm.

How do you calculate torque on a belt drive?

Under ideal conditions, the formula for drive torque would be: M = F x r. Here r is the length of a lever which is attached to the axis of rotation and at whose end the force F acts perpendicularly. However, the point of application can also be arbitrary.

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