How do I loosen the alternator tensioner?

To loosen an AI tensioner, such as an alternator, loosen the main mounting bolt, usually on the engine, and the locking bolt, usually on a bracket or arm. If equipped with a tensioner screw, back off the tensioner screw. Then, push the alternator toward the other pulleys, loosening the belt. via

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. via

How do you tighten a tensioner bolt? (video)

https://www.youtube.com/watch?v=-f1eE9U-khU

What is an alternator tensioner?

A tensioner maintains the correct amount of tension on the belt at all times throughout its duty cycle. It also helps protect other components such as the alternator and water pump from undue stress and premature failure. In addition, a tensioner is a relatively inexpensive part to replace. via

What size are the alternator bolts?

Alternators that come loose are a pain, so that's why ARP came up with these super tough bolts. Your choice of chrome moly steel or polished stainless (nominally rated at 180,000 psi).
...
7/16" stud.

OAL 5.000˝
Thread Size 1 7/16-14
Thread Length 1 1.000˝
Thread Size 2 7/16-20
Thread Length 2 1.000˝

via

How many bolts hold an alternator?

There will be about 2-4 bolts depending on your make and model holding your alternator in place. You must remove these bolts with a socket and a ratchet. After the bolts are removed, pull out the alternator carefully. via

Do I need a torque wrench to change alternator?

Replacing an alternator isn't difficult but you will need some specialized tools like a torque wrench and breaker bar, and depending on how your alternator is mounted, a belt tensioner tool could be required. via

How does a tensioner bolt work?

In bolt tensioning, the bolt is preloaded, stretching it before the nut is tightened. The tensioner is clamped to the bolt's threads and pushes against the flange in the surface being bolted. This provides a very consistent amount of stretch to the bolt, ensuring clamping force. via

How tight should the belt tensioner be?

When twisted either way from the middle, the tension in the belt must not be more than 12 inch. The belt is too tight if it is twisted more. The positions do not work for the vehicle. via

How do you release the tension on a alternator belt? (video)

https://www.youtube.com/watch?v=6VQDvdtNH54

Are tensioner pulley and idler pulley the same?

The primary distinction between tensioners and idler pulleys is the presence of an adjustable bolt. Tensioners are positioned on the bolt through mounting. Idler pulleys are not mounted to an adjustable bolt. via

How do you line up an alternator bolt? (video)

https://www.youtube.com/watch?v=Kxtr6PF4bmM

Do belts squeal when they are too tight?

A belt that is either too loose or too tight will often slip against the pulleys, causing the squeal. While the motor is running, pour water over the squealing belt. It the noise stops, it tells you the belt needs tightening. via

How much torque does an alternator need?

If your alternator demand is for example, 2kW, then you need 2.7 HP from the motor to drive it. The details of RPM and torque vs. power you'd have to get from the alternator supplier. Typical alternators were 50-70A at 12V, or about 720W (roughly 1HP.) via

What should you follow when removing and refitting the alternator assembly? (video)

https://www.youtube.com/watch?v=JU1PtnMKWNk

What is tensioning bolt?

What is Bolt Tensioning.. Tensioning is the direct axial stretching of the bolt to achieve preload. Inaccuracies created through friction are eliminated. Massive mechanical effort to create torque is replaced with simple hydraulic pressure. A uniform load can be applied by tensioning multiple studs simultaneously. via

What is a tensioning nut?

Tension Nut type TN | ITH. ITH Tension Nut. Extending the required projecting thread for to use the hydraulic, torsion- and friction-free tensioning. Existing bolts can remain. Home » Fasteners » Tension Nut. via

What is the difference between bolt torquing and bolt tensioning?

“Torque” is simply a measurement of the twisting force required to spin the nut up along the threads of a bolt, whereas “Tension” is the stretch or elongation of a bolt that provides the clamping force of a joint. via

What does a loose alternator belt sound like?

It sounds as if your alternator belt is a bit loose and is slipping. That's what makes the squealing sound you're hearing. Your alternator is a belt-driven electrical generator, about the size of a small cantaloupe, and is located to one side of the front of the engine. via

Can you drive without an alternator belt?

If you're wondering whether or not you can drive your car without a serpentine belt, the answer is no. There are many dangers to driving without a serpentine belt. A car can only take out so much slack from other components before they fail and stop working altogether. via

Why does my new alternator belt squeal?

Belt or Pulley Misalignment

What is this? Belt or pulley misalignment is a common issue that causes changed serpentine belts to still squealing. Misalignment means that the grooves on your belt are not aligned with the ones on your pulley. It also tells that you shift the belt a bit in or out in one of the pulleys. via

How do you adjust the alternator belt on a 2000 Honda Civic? (video)

https://www.youtube.com/watch?v=Z2Vta2nYdLM

What does an alternator clutch pulley do?

Clutch pulleys, also known as one-way or decoupler pulleys, are designed to decouple the Alternator from the rotational forces of the engine crankshaft pulley and serpentine belt. via

How much does it cost to replace a tensioner?

The average cost for drive belt tensioner replacement is between $235 and $267. Labor costs are estimated between $80 and $101 while parts are priced between $155 and $166. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed. via

How do I know if my alternator clutch pulley is bad? (video)

https://www.youtube.com/watch?v=XYi_w3ieGUo

What is an alternator tensioner?

A tensioner maintains the correct amount of tension on the belt at all times throughout its duty cycle. It also helps protect other components such as the alternator and water pump from undue stress and premature failure. In addition, a tensioner is a relatively inexpensive part to replace. via

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