Can You Tighten Alternator Belt Too Much

Some times when you driving home after work. If the alternator is found to be malfunctioning, you can either replace it. To tighten the belt, you loosed an alternator You need a new belt and maybe the tensioner too. My kids nor wife even want to ride in my 2012 yaris. Although virtually more easy adjustment as the valve is cold theyre time to check the book wire from turning into the underside of the screw which can cut how quickly the transmission need to be removed and replaced. After the second application and rinse, I decided to start the engine to blow out any remaining water and debris. Now we need to disconnect all electrical wires to the alternator, 1 green plug and 1 cable (10mm nut), ground bracket (8mm nut). It means that when 22lbs of pressure is put on the belt in that location, the belt should deflect or move 7-9mm. Shut off the engine, and try to further tighten the alternator on the slotted bracket. Jack up the engine to secure the engine mounting nut and bolt. If you hear any belt squeal, the drive belt is too loose. Read you manual 4 times!!!!! You are also overdue for a brake fluid (VW only fluid) change. Pieces of the belt had started to come off inside. TOYOTA YARIS P9 2 bolt alternator lower pivot bolt Hello Everyone I am wondering if anyone knows how to get to the lower alternator pivot bolt in my 1. Belt tension trick. Once you have done this conversion you can then use a Balmar, Ample Power or other external three stage regulator. Then get a crow bar or something to put between the alternator and the motor to put tension on the belt. I thought it might need tightening, but after learning there was an automatic tensioner on the belt loop I just ordered a new belt (theyre cheap enough so. Do not over tighten. Can a tight belt cause any physical harm? Answer: Yes. So it could be AC/Alternator belt. The regulator controls alternator output by increasing or decreasing the strength of the rotor's magnetic field. The Gates or Goodyear Gatorback seem to do the best. Check when you change the oil. Engine oil viscosity too heavy. Replace Timing Belt / Water Pump Honda Accord 1990-1995 4 Cylinder. When it's charging, it's creating too much drag which is shredding the drive belt. Basically they measure how much you can deflect the belt upon a given length of "run" of the belt when it's installed. You just want to take the belt off and spin the alternator to make sure it spins nice and smooth. When bearings are imposed under a side load as from a belt, they stay pretty happy. Since you gave no information on the make and model of your vehicle, I am going to assume it is a modern vehicle (like no more than 20 years old). ) But even one person can do it. Put the a/c belt back on the compressor. Then you keep turning the turnbuckle until you haver enough tension on the belt. Do not over tighten the belt; it should be firm but flexible. There is usually a belt tensioner or idler pulley to guide the belt as it moves. How to adjust alternator belt on 1999 Lexus ES300? alternator. The tension is to tighten the serpintine belt. belt onto the inside and fix it. At the heart of the system is the belt. After installing a rewired HES last week (thanks, GSADDICT!) I installed & adjusted a new alternator belt. To correct the problem, tighten your belt. It is the tension on the belt you should be concerned about. Once you are satisfied with the tension on the new belt, you can tighten the other 12mm bolt and the lower 14mm bolt. how to calculate your alternators RPM's you measure your crank shaft pulley size and then your alternator pulley size. You will need to adjust an alternator belt whenever it has been removed from the car. I replaced the alternator with another from ebay, solved the problem. I do notice that the alternator pulley looks like it may be a tad big higher than the flywheel and is putting undo stress on belt. When the tension is correct hold the generator firmly in that position and tighten the adjusting strap bolts. You may have to register before you can post: click the register link above to proceed. I agree on the belt sizing, there are different size alternator pulleys GM has for that frame so it can be very easy to not have the correct one for our application. If she is still standing, then the power supply is defective, get a new one! Much like the Cessna strobes, our flashing beacon can also be a noise generator in our headsets. This process can be done with the fingers only. Step 2: Loosening the alternator bolts. You have to loosen the Lower Mount Bracket Bolt and the Alternator Adjusting Bolt. Loosen the adjuster clamp nut (Green arrow), Tighten the adjuster bolt (Yellow arrow)till with reasonable force the belt can only be deflected by about 10mm at it's longest run. To tighten the belt, use a strong piece of wood to pull the generator away from the engine - a hammer handle will do - while you test the belt tension with the other hand. Re: Can the Drive Belt tension be adjusted Doc, one thing I don't like about Ezgo is the spring in the drive clutch that holds it open, maybe there for an application that needs the enging to idle. Put the a/c belt back on the compressor. After installing a rewired HES last week (thanks, GSADDICT!) I installed & adjusted a new alternator belt. You guys should check if you have the right PS belts if you have to tighten that bolt that far down. As mentioned above, proper belt alignment and tensioning are critical to maintaining motor efficiency. How hard is an alt-belt replace?. But basically, assuming the belt is attached with enough slack removed, the tensioner bolt should be able to taske up the rest of the slack once tightened. The reason for reguarly inspect your v-belts is quite obvious when you see the units driven by v-belts. Thread the bolt in a few threads and give the bolt a few taps with a hammer untill the threaded insert moves about 1/8" or so. once I have been given a flat (v-groove) belt rigidity gauge from NAPA i chanced on each and every belt I had adjusted became suitable at 0. Belt could be on loose, get down to it and see if you can twist the belt further than about 45 degrees (do this will all belts tbh). you do not point out make, form, or year, yet while the rigidity is manually set on your vehicle it is common to under-tighten flat belts. To correct the problem, tighten your belt. A bad or failing alternator can discharge your battery, cause issues with your car's electrical systems, or leave you stranded wh. It really can be quite a pain sometimes when it comes to belt noises. There is usually a belt tensioner or idler pulley to guide the belt as it moves. Use your prying tool of choice to pry on the alternator and put tension on the belt, and hold it there while you re-tighten the top alternator bolt. AC is off. Install the water pump/AC belt. 5 nf (01 echo). 20)INSTALL AND ADJUST THE ALTERNATOR BELT If you have the supercharger, follow the info in disassembly step number 7. You place the tensioner in between the two pulleys (alternator and engine) and the "horns" are expanded out until they push against both pulleys. This is called a load test If you have a failing alternator, the voltage will be well below 14 volts. Really easy job, just loosen one nut and tighten another. 0 lx belt help? If this is your first visit, be sure to check out the FAQ by clicking the link above. A typical timing belt will only cost between $25 and $50, but the repair takes at least a few hours. Sepentine belt needing a tighten on 99 model. Recheck the tension in a few hundred miles. Replaced my timing belt today and cant seem to figure out where "Thermostat" is? I got no bentley manual and could anyone show me some pics of where the thermostat is located i've searched but can't spend too much time as I need to place the belts back ASAP. How Much is an Alternator for a Car? If you find yourself wondering, how much is an alternator for a car, here is a quick rundown of the costs. com or YouTube. You can adjust the alternator to tighten the belt to the recommended tension, but eventually you come to the end of the slot. After that I put the belt on and got a tyre lever or an iron bar to pull the alternator over and tighten the belt to the required amount, while I held the alternator in place I tightened up the top two nuts. A tight belt or waistband is like a tourniquet around your gut, disrupting the flow of your digestive system. Remove the Alternator belt. All this for an alternator belt discussion in the Too much will of course foul the belt but it doesn't take much to keep the halves loose. Use a large straight screwdriver, pry bar, or other appropriate tool to tension the alternator against the belt. See my Cave, Serpent Belt I used to be concerned about over-tightening the belt, but since getting a tension gauge, I see that that's not my problem. There is a little tightening washer/shim in the front alternator mount that pulls tight up against the alternator when you tighten the bolt. Check the belt tension again after a few weeks. Also do not over-tighten belt. Shut off the engine, and try to further tighten the alternator on the slotted bracket. It's a well known fact that a single v-belt is not enough to turn a 130 amp 3G alternator that is near full output. There is NO squeal from the alternator belt. If the angle and the width look right but the NAPA belt you got is a little loose, then maybe the next smaller circumfrence size would be just right. Tool Q&A Question 2: Improper tension of the drive belt may cause alternator charging issues Step-by-step assistance for when there is no battery terminal/post corrosion and the battery is charged, but the vehicle won't start. Tighten Your Belt According to Powermaster, the #1 reason for alternator failure including no output is a slipping belt. Removing the undertray will give no advantage. Now back to the alternator belt snake that guy back around the crankshaft and around the a/c and onto the alternator pulley last. Find the best deals for Chrysler Jeep Dodge & Ram Car Truck & SUV battery replacement. No matter how much you tighten this belt it is going to slip and create belt dust, because the belt is too small for the pulley! Multiple attempts were made to fix this issue, at a decent cost to the owner, and not a single technician noticed the wrong sized pulley OR THE ALTERNATOR BRACKET. Loose the drive belt tension by turning adjusting bolt (E). Loose or defective alternator belt. Overtightening = you can damage a lot more than just the belt. Remove the Alternator belt. Dont use to much force or it will snap if tighten to much. So it could be AC/Alternator belt. I agree on the belt sizing, there are different size alternator pulleys GM has for that frame so it can be very easy to not have the correct one for our application. The first thing to check when you have your cars battery gauge jumping around is the serpentine or alternator drive belt. For most replacement belt brands, the standard v-belt part-numbering schemes are a combination of the width of the belt, the angle of the v of the belt, and the circumfrence of the belt. Tighten the belt. Too much alternator noise. every time i find the alternator shrieking at start because it working harder than normal after start like tj said, but then once the battery is recharged it is under less load and the tension on the belt is enough to grip the pulley. The hard way is to slip a pry bar between the alternator and the engine block and pry as hard as you can while trying to tighten the bolt on the adjuster arm. Battery Low Voltage Indicator Remains On With Engine Running Low engine speed. Once I started cycling, not to put too fine a point on it, I got an ass so I didn't have to crank my belt down to keep my pants up anymore. Car repairs can drain your pocketbook fast, but you can do a wide range of repairs yourself, regardless of your technical skill. im not sure why it broke. How do I change the serpintine belt? do I have to pull off the alternator belt? Where do I adjust the tightness of the pullies? What tools will I need? HELP!!!!!355 roller serpintine belt change?If you have a spring tensioner, then there should be some way to lever the tensioner pulley against the spring to relieve tension and change the belt. Do not over tighten the belt; it should be firm but flexible. These products are shortlisted based on the overall star rating and the number of customer reviews received by each product in the store, and are refreshed regularly. The belt should be inspected for signs of wear. the tensioner is basically a big spring,it keeps tension on the belt at all times. To tighten the belt, do i loosen or tighten the bolt located on the outside of the alternator facing you when looking at the enine bay. The Buell part I bought won't work on the stock Delorean alternator. Check the condition and tension of all drive belts every 12,000 miles, or at least once a year. If you are experiencing problems with the electrical system, the alternator itself might be fine because the problem could be with one of the belts connected to the alternator. I think I'm still in for a belt replacement though tightening it has revealed a small squeal that wasn't there before. You can get a belt to tight and that will cause problems with heat due to the bearing/bushings in the alternator. Alternators are only good for about 15,000 continuous RPM's, the lower the alternator RPM's the longer your alternator will last. For the t-beltget it tight enough so that you can JUST barely twist the t-belt about 90 degrees but NO furtherbut you shouldn't have to apply a hefty amount of force either. Replacing a timing belt should not be difficult. Bolt a holds the alternator to the block, it's a 14mm, loosen it 1 turn to allow alternator movement. At the heart of the system is the belt. I've replaced the belts, I've tightened the belts, and I've replaced the alternator. If you tighten it and it doesn't go away, try belt conditioner. ECS Tuning: Timing belt kit, $280 This is a complete kit with the timing belt, tensioner, rollers, accessory belts, and water pump impeller. All repair procedures are supported by detailed specifications exploded views and photographs. To tighten the belt, use a strong piece of wood to pull the generator away from the engine - a hammer handle will do - while you test the belt tension with the other hand. Work in reverse, start with the alternator belt. The serpentine belt tensioner pulley (7) is located directly below the alternator pulley (8) on the Cummins Diesel engine in our 2006 Dodge Ram 2500. How would you level. I checked the tension on the belt and it is fine and I tried belt dressing, and what do you know, it's still squealing. If you can move the alternator enough to undo the belt, then you can remove the belt and you're done. It wraps around the crank pully, the waterpump pully, and the alternator. • If the belts you try are too short on the pulleys, but the next size is too long, try a narrower belt first. As a Harley-Davidson is ridden, the drive belt will naturally begin to relax and loosen. Some belts run around a third or idler pulley, which acts as an additional pivot in the belt's path. Install the water pump/AC belt. A good quality belt on this application is a must. Again, doesn't take much effort to just lift the fan up. Slip on the new belt, and torque the pivot locking bolt to spec (you can hand tight the locking bolt. 3rd pic shows belt size on the 91. an indicator line located past that one indicates either a severely stretched belt or a new one that is much too long. Sometimes the belt will begin to squeal a few days after installation. You can then deflect the belt with your hand - don't go mad or you will damage it, press down until you feel resistance. I can't find anything on how to loosen it on ask. I have been told by a local 'unofficial mechanic' that it's either:- my belt needs tightening or my alternator is on the way out. I am at this point leaning towards needing an OEM alternator which comes with the pulley, and I can only assume the pully will be already torqued to specs. Shims were added or removed to achieve correct tension. Replaced my timing belt today and cant seem to figure out where "Thermostat" is? I got no bentley manual and could anyone show me some pics of where the thermostat is located i've searched but can't spend too much time as I need to place the belts back ASAP. At this point you can test if the other two bolts need to be removed or not. When replacing the belts, adjust them to a 1/2" deflection on the longest span of the belt. A belt that is too long (just an inch or less) may slip, make noise and wear prematurely. $300 for an alternator installed sounds high to me too - if it's a gnarly install and you are getting a NEW factory alternator, OK then, but if not, seems high to me. It is regarded as a critical component. Get the old serpentine belt off the alternator using a 15mm socket and turning the idler/tensioner nut counter-clockwise. Tools you'll need: 17 mm open-end wrench for the alternator mounting bolts and nuts. Use a prybar to put tension on the belt by pulling the alternator toward you while you tighten the upper mounting bolt. If you hear any belt squeal, the drive belt is too loose. If you can move the alternator enough to undo the belt, then you can remove the belt and you're done. My suggestion is to measure the deflection BEFORE you remove the belt and alternator. It is the tension on the belt you should be concerned about. I know alternator is good because it would charge batt at 14 volts when running. Alternator Drive Belt Replacement in the DOHC Mitsubishi 3000GT/Dodge Stealth by Jeff Lucius Introduction The drive belt for the alternator and AC compressor (if installed) should be replaced every 30,000 miles or 3 to 4 years, or if it shows signs of wear. For x axis, the belt seems to be going through a narrow slit at the back of the x carriage. The component at fault is the alternator. Sounds like something else may be going on. I changed out my alternator the other day and hand-adjusted the tension on the alternator belt to about 1/3" of an inch play, about what it was before I replaced the alternator. Here's why: Amperage is basically the amount of electrical current your alternator can supply. If i leave it too loose, it flies off. You can perform a simple troubleshooting measure with two common tools to correct the problem, but first you'll need to access the appliance's motor. Did you attack the bottom "pivot" bolt (on the alternator) from below the vehicle, or did you do everything from above (i. this is a great write-up. You can pull the dipstick out and look at it closely. One belt runs the alternator, water pump, and AC. com The squeal you hear is the belt slipping. Aside from a loose drive belt, too much alternator noise may be caused by a defective diode or worn bearings. Belt tension is about 1" deflection in the center of the span when pressing down with fair pressure. Alternator belt bolt locations. Much worse, the belt causes the motor to jump timing and self-implode. If you have a serpentine belt, install it around all of the pulleys except the tensioner. If the belt or pulley immediately goes silent, then you know what needs attention. im not sure why it broke. Finally the noise has stopped. AC is off. Next up is the Air Conditioning belt which is removed by loosening the 14mm nut on the ‘face’ of the tensioner pulley (1) and then winding the 14mm bolt (2) anti-clockwise until the tensioner pulley can slide towards the engine enough to remove the belt. These products are shortlisted based on the overall star rating and the number of customer reviews received by each product in the store, and are refreshed regularly. Loosen jam nut (D) and adjusting nut (E) so that there is a. If you can, tighten up the alternator. every time i find the alternator shrieking at start because it working harder than normal after start like tj said, but then once the battery is recharged it is under less load and the tension on the belt is enough to grip the pulley. Because the fan must be properly positioned within the fan shroud for optimal cooling, the VW design doesn't allow for alternator position adjustment for belt tensioning as you would with most cars without a self tensioning belt system. You can count on having some issues with Saab ie. For most replacement belt brands, the standard v-belt part-numbering schemes are a combination of the width of the belt, the angle of the v of the belt, and the circumfrence of the belt. well I bet you know how bad they sound. put a wrench or whatever you can on it to turn it clockwise and it should be spring loaded. Alternator Belt slipped off - Is the car still safe to drive But if the belt drives the fan and water pump you can only drive it a few hundred yards before it gets too hot and you cause major. Alternator belt change. If it doesn't move, loosen the lower one too. Here's why: Amperage is basically the amount of electrical current your alternator can supply. A slack belt. now you can see why i work on my own car. The alternator will have one bolt that secures it in a fixed location and allows it to pivot. On the alternator belt you need a 12mm wrenchy wratchet, and a pry bar for adjustment. You see, these damaged bearing parts can cause an irritating, cracking noise. Timing Belt Replacement on my 2008 PT Cruiser. Be careful not to over-tension the belt. Save time and money by doing it yourself with the confidence only a Chilton Repair Manual can provide. It will relieve the tension on the belt. In this case, everything with your car's alternator seems to check out OK — no belt issues or other visible signs of trouble — but the car's battery is dead, as is most of the car's electrical equipment. Volvo B234F (16 valve) Timing Belt Replacement. When you start the engine the alternator will charge at maximum amps till it brings the battery backup to full charged then the load drops off and the squeal stops. So my issue is that the fan/alternator belt in my 97 Jackaroo(bighorn) squeels when cold and you put some revs on it (VERY ANNOYING). If you want to tighten your belt, you can either [] have an assistant cram a crowbar between the block and alternator and risk breaking your expensive alternator mount, or you can use this tool (Lisle #12400). But I can't for the life of me figure out how to adjust the tension on it. 8 volts to keep the battery 100% charged. When this belt fails, the car will most likely fail too. If a v-belt is too tight you will damage the components it is supposed to drive. Over tightening can cause more problems than under tightening, as you are putting a greater load on the bearings. Tighten the nut on the lower mounting bolt, reconnect the positive lead, the harness plug and the ground. well I bet you know how bad they sound. If there's too much resistance in the circuit, it'll wear out your alternator. Put new pulley on, tighten bolt, put serpentine belt back on. If it has been adjusted to the tensioner's limit of travel, you'll have to replace the belt. Too much alternator noise. Once the belt is at a correct tension you can tighten the 2 alternator securing bolts. I don't know if they've changed it yet, but the belt recommended by Unorthodox was too big as of earlier this year. While you've got the power steering and alternator belt out of the way, you should go ahead and replace the air conditioner belt, too, as belts tend to show similar wear, and you can't get to the a/c belt without first removing the power steering one. Re-fit the lower tensioner bolt. If you don't have them, you can get the alternator belt almost anywhere but the water pump belt should be ordered from Ricambi America. Volvo B234F (16 valve) Timing Belt Replacement. 1998 - 528i (Tip applies to All E39 528's) by Bryan H. Its best to have the engine shut off while trying. Maybe this has been discussed before but when I start my 1978 400 from cold I get a "clicking" noise which seems to come from either the alternator or the alternator belt. Got the alternator in, and now a new problem that I created. Then get a crow bar or something to put between the alternator and the motor to put tension on the belt. You can purchase an inexpensive plastic belt gauge at most auto parts stores than can tell you if your belt needs to be replaced by measuring the depth of the grooves on the belt. The reason for reguarly inspect your v-belts is quite obvious when you see the units driven by v-belts. Then you tighten the compressor pinch bolts. Depending on which belt(s) you are changing, it may be necessary to loosen or remove other interfering belts to get at the one(s) you want. If the tension is too high, this will cause excessive wear to the belt-driven accessories. Be careful not to over-tension the drive belt. But I can't for the life of me figure out how to adjust the tension on it. After installing a rewired HES last week (thanks, GSADDICT!) I installed & adjusted a new alternator belt. I would consider rebuilding or replacing the alternator soon. Tip: Check the owner's manual for exact specifications for your vehicle. IF it is Just an alternator belt then it should not cause the vehicle engine gauge to run hot. Compare the most helpful customer reviews of the best rated products in our Automotive Replacement Alternators store. How to adjust alternator belt on 1999 Lexus ES300? alternator. Now tighten the top bolt (the adjusting bolt) until the belt is snug. an easy repair to do. Then put a bolt through the two L brackets and start tightening. If you loosen the alt to adjust the tension, then you may find that the alt is too loose, thus it could become mis-aligned. On the alternator belt you need a 12mm wrenchy wratchet, and a pry bar for adjustment. Volvo B234F (16 valve) Timing Belt Replacement. Next up is the Air Conditioning belt which is removed by loosening the 14mm nut on the ‘face’ of the tensioner pulley (1) and then winding the 14mm bolt (2) anti-clockwise until the tensioner pulley can slide towards the engine enough to remove the belt. My girlfriends Ka has had a bit of a squeak since she got it at the end of December, which I was 90% sure was coming from the alternator belt. It may be possible to loosen the idler pulley as well as the main component, making your job much easier. Yes, you can theoretically use an Allen wrench to put into the tensioner, but you're going to have to be very strong to turn the tensioner with a small allen wrench. You can check out any time you like, but you can never leave. how to calculate your alternators RPM's you measure your crank shaft pulley size and then your alternator pulley size. The turnbuckle end is too large and gets right into the fan blades. In your car, probably there is a screw/nut that you loosen, then put tension on the alternator until the belt is tight enough and while holding everything in place, retighten the nut. I know alternator is good because it would charge batt at 14 volts when running. Also, check the alignment - all pulleys must be in the same plane (alignment). Put the new alternator belt on the second track of the a/c compressor, up to the alternator. A belt that is too long (just an inch or less) may slip, make noise and wear prematurely. Suprised me. With a few tools and about an hour you can swap it out yourself --. If you hear any belt squeal, the belt is too loose. It's worth it to have one around. First, keep an extra water pump and alternator belt with you. The belt that drives a power-steering hydraulic-fluid pump is usually at the front of the engine, turned by a pulley on the crankshaft. Once the belt is tightened correctly, re-tighten the lock bolt and check that the belt is still the proper tightness. The importance of correct belt tension If the belt tension is too low, the belt will slip causing noise, extremely high temperatures and premature belt wear, all of which can lead to the poor functioning of the belt-driven accessories. So here's a step-by-step procedure to replace the belt: 1. I had an old Proton with belt issues and it did both of these things when the belt wasn't tight enough (that was manually tensioned though, so it was mostly me being too lazy to tighten it). You can pull the dipstick out and look at it closely. Actually, before I tighten it up what I'm going to do. While the alternator tension is loose, you can remove the belt from the alternator wheel to check for bad bearings if you think this is an issue. Step 4: Check Belt Tension and Adjust if Needed. • If the belts you try are too short on the pulleys, but the next size is too long, try a narrower belt first. Next is the belt. I discovered the CS-121/CS-131 which were SI series replacements from GM. As you have got this far, its a good idea to check the water-pump - if there is any movement on the shaft, or any signs of seepage, replace it. When Factory Five announced the Gen 3 Coupe, I started considering it more seriously. A good way to tell if it's the alternator pulley specifically is to listen for whether or not your automobile wails even before you touch the steering wheel. On the alternator belt you need a 12mm wrenchy wratchet, and a pry bar for adjustment. Alternator Belt:. I will come back and edit this post with the proper info on this. It seems to stop after the engine warms up. The only picture I have handy is the Camaro, which should get you into an automotive mood. com or YouTube. You dont want to over tighten the belts because you can damage the alternator/steering pump bearings and shorten the life of your belt. Good luck-DSM. A very old belt may be so worn that it's impossible to tighten it enough to stop the squealing, so if you find that this is the case, be prepared to have the belt replaced. $208 for an alternator belt and tensioner? What kind of car is this, where do you live? If your answers are "Ferarri" and "Hollywood", OK then. Watch the Flutter. REVISION : C TH. Belt could be on loose, get down to it and see if you can twist the belt further than about 45 degrees (do this will all belts tbh). The belt is tensioned (tightened) by moving the alternator. Shut off the engine, and try to further tighten the alternator on the slotted bracket. Shopping for an alternator: Before replacing the alternator, make sure it is causing the problem. How to Test the Alternator in Your Car: An alternator helps power all of a car's electrical systems, including the starter motor, speaker system, and lights. Alternators are only good for about 15,000 continuous RPM's, the lower the alternator RPM's the longer your alternator will last. Check your belt alignment to be sure all is well, and tighten down the alternator belt so it will all work when the engine fires up. Some belts run around a third or idler pulley, which acts as an additional pivot in the belt's path. This was pretty much jammed in but I managed to make the gap where the alternator sits a touch bigger by pushing it back in again by tightening a little nut/bolt/washer combo to push it back in. The markings on the back of your rotor are for timing up triples, so should be disregarded. Do not over tighten the belt; it should be firm but flexible. My suggestion is to measure the deflection BEFORE you remove the belt and alternator. Good luck - you might make note of the belt required so the next person that gets the tractor does not experience the same problem you are having. How to adjust alternator belt on 1999 Lexus ES300? alternator. 1998 - 528i (Tip applies to All E39 528's) by Bryan H. 2003 chevy tahoe, i took my belt off to get to my a/c pump. Too much pressure on the engine accessories can ruin the bearings of the water pump or alternator in a relatively short time. This is called a load test If you have a failing alternator, the voltage will be well below 14 volts. Since 2002, I’ve also owned a completely restored 1967 Camaro RS which falls into the unique category just like the vehicles in the paper. The total cost will depend on the vehicle you are driving, as well as if you choose a brand new, or a rebuilt alternator. I got about 20,000 miles out of the alt. I think I'm still in for a belt replacement though tightening it has revealed a small squeal that wasn't there before. Again, check for black dust. Not much belt. This is even more common with the supercharged NSX’s everyone knows that when the belt isn’t tight the SC slips and wont make as much boost. ) Adjust the tension of the belt. Tighten the belts. I don't know if they've changed it yet, but the belt recommended by Unorthodox was too big as of earlier this year. So would you say that when I had that mechanic work on my car, they could have tightened my belts too much and caused my alternator to go out? Because they told me that my alternator was probably already bad and that when they put on new belts nice and tight, my alternator sound is more noticeable, instead of driving with my old belt I just. • If the belts you try are too short on the pulleys, but the next size is too long, try a narrower belt first. Basically they measure how much you can deflect the belt upon a given length of "run" of the belt when it's installed. (Wally has a. I tend to only tighten the belt until it stops making noise, and if supercharged I tighten the belt while on the dyno, until I stop seeing a rise in. This pulley allows you to relieve the tension from the belt, allowing you to remove it from the alternator. Once the belt is at a correct tension you can tighten the 2 alternator securing bolts.