Should the pully on a alternator spin free

1. Belt Tensioner Inspection amp; Replacement Pulley.
2. Is It Safe To Drive With a Bad Belt Tensioner? - Car Care Hacks.
3. Is the alternator pulley supposed to spin freely.
4. Does A Tensioner Pulley Spin? - Truckile.
5. FAQ#39;s Alternator Questions - Quality Power.
6. Alternator Frequently Asked Questions FAQ.
7. Understanding Your Alternator - Street Rodder Magazine.
8. How to: Test amp; replace overrunning alternator pulley OAP.
9. New Alternator Pulley supposed to be tight? - B.
10. Whats the best water pump pully size | Chevy Nova Forum.
11. Overrunning Alternator Pulley Application Guide - Dayco.
12. SOLVED: Is the idler pulley supposed to spin? - Fixya.
13. What Is A Alternator Decoupler Pulley? - Read The Answer - S.

Belt Tensioner Inspection amp; Replacement Pulley.

An alternator is best described as a power generator in your vehicle. The alternator belt is the means through which this energy transfer is done to other parts of your car. It is also known as the serpentine belt or drive belt. While the power generating site of the engine is the crankshaft, the alternator belt helps to transmit power from the. Nov 16, 2003 Should New Rebuilt Alternator Pulley Spin Freely ? U. User132384. posted. 19 years ago. In my search for a replacement alternator, I came across one that had a pulley that wouldn#39;t spin freely. It spun, but stopped after about one revolution. My old alternator pulley spun a lot more easily. Is the bearing too tight on the new alt ?.

Is It Safe To Drive With a Bad Belt Tensioner? - Car Care Hacks.

Aug 8, 2023 Yes, it does. The tensioner pulley is designed to maintain the correct tension of the belt. The belt tensioner should spin freely while the engine is running. If you notice any resistance while the engine is running, there may be an issue with the tensioner pulley. Usually, the bearings on Alternators or idler pulleys go bad before the a/c because the a/c should have oil in it. However, it could be any of the pulleys that the belt spins on. It can be a process of elimination of changing parts until the sound goes away, if you can#x27;t detect it under free spinning conditions with the belt off. Mar 17, 2020 Anyways as Im doing this I decided to check the alternator pulley I had done so previously and thought it was fine and actually noticed that it didnt spin as smoothly as I originally thought. Itll spin easy for maybe a 1/2 to 2 rotations and then itll have some resistance and repeat.

Is the alternator pulley supposed to spin freely.

How pulleys work. When one of the accessory pulleys rotates due to drive belt motion, it causes the accessory to activate. For instance, the movement of the alternator pulley causes a magnetic field to form, which is then converted to electricity, causing the alternator to work. The power steering pump pulley causes fluid to become pressurized. 3 Pulley ratio In order for the alternator to spin fast enough to produce the power necessary at low RPM, the pulley ratio should be correct. Changing the crankshaft pulley or alternator pulley will vary this ratio. For most vehicles the ratio should be at least 3:1.

Does A Tensioner Pulley Spin? - Truckile.

The overrunning alternator pulley is a further development of the fixed belt pulley on the alternator. Thanks to its overrunning clutch, it damps the vibrations which are generated by cyclic irregularities in the crankshaft and also enables the engine speed to be reduced rapidly in the event of sudden load changes. 1rst: spun the alternator pulley, spun to the right, takes about 4 seconds to stop and there is a lil whisp/whine noise when it spins. Spun to the left, no noise but and not much spin due to it being a clutch pulley.-2nd: spun the water pump pulley, there is no free spin and it only takes about 2-3 seconds to stop spinning in each direction.

FAQ#39;s Alternator Questions - Quality Power.

Apr 9, 2017 Assuming it is an old Alternator and has no one way clutched pulley, then you should be able to spin it backwards, howeverm note a couple of things: 1 the cooling fans built into the rotor will. Your engine has drive belts or a serpentine belt which transfer power to different accessories like the power steering pump, A/C compressor, water pump, and alternator.The idler pulley is a component that helps provide tension and keeps your drive belts aligned and guided. Let#x27;s take a closer look at how this part works and when you should replace it.

Alternator Frequently Asked Questions FAQ.

RPM, Belt Length, Speed, Animated Diagrams - Inch. If you know any 3 values Pulley sizes or RPM and need to calculate the 4th, enter the 3 known values and hit Calculate to find the missing value. For example, if Pulley 1 is 6quot; diameter, and spins at 1000 RPM, and you need to find Pulley 2 size to spin it at 500 RPM, enter Pulley 1 = 6. 2 Alternator Spin Test. Many customers like to hand spin the alternator from the pulley... just to make sure it turns smoothly. If it has a pulley clutch it will only spin one direction the clutch will free-spin the other way. 3 Clutch Spin Test. The clutch should turn smoothly one direction and lock up the other.

Understanding Your Alternator - Street Rodder Magazine.

As such, these may be signs of a problem with the alternator pulley. 4. Abnormal Noises. Sometimes, you may hear growling or whining noises before the alternator fails. In this case, the alternator pulley normally rotates the alternator while the alternator belt drives the engine#x27;s accessories. Life tip: have the parts store test any alternator or starter before leaving the store. Many are crap outa the box.... Yes alternators should damn near free spin like the front wheel of a bicycle Reply... Can you identify what is keeping the pulley from spinning freely? It could just be something simple like the pulley is on backwards and is. FAQ#x27;s. Higher output alternators require more effort to spin than a lower amperage alternator when the alternator is under a load. This additional effort places more strain on the alternator drive belt. If for any reason the alternator pulley is not aligned perfectly with the other pulleys on the engine, the alternator drive belt will slip.

How to: Test amp; replace overrunning alternator pulley OAP.

Jan 31, 2011 -1rst: spun the alternator pulley, spun to the right, takes about 4 seconds to stop and there is a lil whisp/whine noise when it spins. Spun to the left, no noise but and not much spin due to it being a clutch pulley.-2nd: spun the water pump pulley, there is no free spin and it only takes about 2-3 seconds to stop spinning in each direction. A smaller CRANK pulley would spin all the accessories slower. The answer to your question is quot;it dependsquot;. If your alternator has to spin at X rpm to make the output you want at engine idle, and it#x27;s currently just below that, then a smaller pulley might get it spinning fast enough. Posted: 6/14/2015 2:14:39 PM EDT.

New Alternator Pulley supposed to be tight? - B.

Nov 7, 2010 With the belt off, try to spin each pulley that spins and see if there is any roughness or flat spots on the bearings that you can detect with your hands. Usually, the bearings on Alternators or idler pulleys go bad before the a/c because the a/c should have oil in it. However, it could be any of the pulleys that the belt spins on.

Whats the best water pump pully size | Chevy Nova Forum.

Bad Alternator Clutch Pulley The Solution: Replace the Alternator Clutch Pulley TECHNICAL SUPPORT 800-228-9672 ASE Certified Technicians are Standing by 7 days a week. the belt to turn the alternator in one direction and spins freely in the opposite direction. If the pulley is bad, it can lock up or spin free in both ways, not allowing. Before you start, make sure the engine is off and the keys are not in the ignition, just to make sure no one attempts to turn on the engine. With the belt off, try to spin the pulley with your hand a few times and observe its movement. It should spin smoothly. If it doesnt, you probably need to replace the pulley. Apr 21, 2016. #12. Pull the belt, stick a screwdriver in the back of the alternator to keep it from turning. Then if it turns in both directions it#x27;s bad. The pulley is supposed to allow the alternator to turn freewheel clockwise only. Sent from my XT1254 using Tapatalk.

Overrunning Alternator Pulley Application Guide - Dayco.

4. I seem to have run across a dispute about whether or not the various pulleys involved with a timing belt should spin freely or not. For example, in this video the anonymous Internet expert says that a good t-belt pulley spins freely. Also, Ben from this site says the same. However, I ran across other opinions stating the exact opposite. Im not sure of the year,make or model of this car but if everything else is working like the powersteering and alternator and car doesnt overheat then i would say that the belt may only run the ac compressor. the first thing to check is all pulleys, the belt may have broke due to being worn and old, the belt may have also broke due to a bad pulley or a frozen one. check all pulleys in which.

SOLVED: Is the idler pulley supposed to spin? - Fixya.

See full list on. Underdrive pulleys use less power since they will spin the accessory at lower speeds. Overdrive pulleys will use more power and spin faster. The best one for you will depend on the requirements of your accessories, including your alternator and power steering. If you#x27;re serious about automobiles, you need to learn more about overdrive and.

What Is A Alternator Decoupler Pulley? - Read The Answer - S.

In order for the alternator to spin fast enough to produce the power necessary at low RPM, the pulley ratio should be correct.... if your crankshaft pulley is 6quot; in diameter and the alternator pulley is 2quot; in diameter, the ratio would be 3:1 or 6 2 = 3. The larger the ratio, the faster the alternator will spin.... feel free to call us at 909. Rotate power steering pump pulley to gain access to each pump front mounting bolt, then remove three front bolts and one rear bolt and lift pump from vehicle. If it is necessary to separate pulley from power steering pump, proceed as follows: install power steering pump pulley remover T69L-10300-B, or equivalent, on pulley hub.