2020 Silverado Idler Pulley Noise - Pulley Noise: 2015 Silverado 2500 6.

It's connected to the engine via a series of belts, and its job is to transfer power from the engine to other components. Restores performance - fixes a failed, squealing or groaning noise from a worn idler pulley; Application specific - reverse engineered from the original design on certain vehicle years, makes and models; Trustworthy quality - backed by team of. Chevrolet Silverado 2500 Idler Pulley Replacement costs starting from $153. Thumping or knocking noise coming from what sounds like the rear of the engine. I always expected the engine to sound really smooth, even at idle. Litens Belt Tensioner 999668A. The idler pulley plays an important role in how well your car’s engine performs. Now let’s discuss the cost of replacing this part. Flat rate pricing based on labor time and parts. Auto Parts ∕ External Engine ∕ Belt and Idler Pulley. ACDelco (1) Duralast (1) Litens (1) Price. Once you have narrowed down which belt driven parts makes the noise, then spin the pulleys with your hand to see if there is. Chevrolet Camaro Idler Pulley; Show Less. Replaced the tensioner, 2x idler pulleys, and also the belt. I have the 5,9 l engine and 2 days ago I started to hear ugly grinding noise from the engine compartment so I popped the hood and was thinking it was the serpentine drive belt tensioner. Hopefully it explains it a bit bette. (50 Nm) Install the drive belt. 2021 Chevrolet Silverado 1500 Idler Pulley. Remove the T45 Torx fastener (red arrow) and remove the idler pulley. Just take the belt off, unbolt the idler pulley, bolt a new pulley on, reinstall belt, and you're done. 6L diesel, with dual generators, drive belt. By maintaining tension on the belt, these pulleys reduce wear and vibration in 3D printing, machine tool drives, robotics, and …. But that didn't solve the problem, so I took both the A/C and drive belts off and started the. I also replaced the ider pulleys. A clicking noise coming from one of your company's computers is never a good sign. The tech inspected pulleys and belt and confirmed they are ok. pokimane thicc pics Chevy Silverado 1 (1998-2006) Torque Spec Settings. The oil pump assembly should be tightened down to the engine block using 18 ft-lbs. Feb 8, 2013 · An experience on my Saab 900 taught me a tough lesson, when 1 idler froze up it took every pulley off in its path, costing thousands of dollars in repairs that was preventable. AI-generated from the text of. unfortunately, whoever did the repair quoted the wrong labor time either on purpose or on accident and both are unacceptable and should be 2 - 2. and remember to please post the year/make/model of the vehicle you are working on. I know what your thinking belt or pulleys. 8L V10 2nd idler pulley installation. butyl tape autozone Get the ACDelco 15-40541 Drive Belt Idler Pulley for your vehicle. Buy Now!New Serpentine Belt Idler Pulley from 1AAuto. That worked for about 1200 miles but the same noise returned. Also, check and see if the pulleys have any play. rockhounding locations You can usually get away with replacing them with every other belt change, but they can fail and cause bent valves at inconvenient times; I had an idler fail without warning in the middle of a 500 mile trip. Install new belt, squeals in 2k miles. You can find out about all the parts for your truck by using your VIN# and going to a GM based parts lookup, like GMPARTSGIANT. Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. Rotate the tensioner clockwise against the spring, and hold it. chances are it will have debris in it and be metallic looking. Most of you probably know what I'm talking about. Could be the alt, tensioner Not in my experience. With that said, if you don't drive it in the winter, your car may not squeal. Helps repair noisy idler pulley bearing ; ACDelco Idler Pulley With Bolt for 2020-2021 Freightliner MT45 - 36299 X AUTOHAUX Idler Pulley for Chevrolet Express Silverado 1500 2500 3500 for GMC Savana Sierra 36299 Idler Pulleys with Bolt 17 mm 0. The part number for the whole assembly is LFG1-15-980C. Check if this fits your Chevrolet Silverado 1500. craigs list myrtle beach sc It would be obvious when looking at the issue. The loud noise problem on A/C tensioner is from its ball bearing. Remove drive belt idler pulley. The Rollover Resistance test measures the risk of rollover in a single-vehicle, loss-of-control scenario. Jan 20, 2018 · Got mine fixed today. But that's why places like Chevrolet Forum exist. 5% off) Idler Pulley Bolt; Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Silverado 2500 HD: High Country, LT, LTZ, WT: 6. Below is a description of each of these causes in the order that you can expect them to occur. Its main function is to guide and support the engine belts, ensuring they. With the belt off, try to spin the pulley with your hand a few times and observe its movement. This can also be caused by poor maintenance practices, such as not changing oil at a regular interval. These steps explain how to inspect a bad pulley in your car and what you can do to fix it yourself. These noises may be coming from various engine components such as the fuel injectors, intake air flow valve, the turbocharger or the diesel exhaust fluid (DEF) injector and may be heard when the engine is running or after it has been turned OFF. To see if the idler pulley is making the noise or the crankshaft pulley is making the noise, simply remove the serpentine belt from the engine and start the engine. You should not take the risk as it could lead to engine failure if not taken immediate steps. 00 + Sold in packs of 1 x 1: $21. Get a bar of soap or some spray belt lubricant and put some on the both sides of the belt while running. I had visible movement at the pitman/idler arms and about 1 1/2" of movement at the outside edge of the tire and with 110K miles decided it was time for new arms. The whole kit; belt, tensioner, and idler pulley. Our 2001 Chevy 2500HD had it's belt tensioner go bad. 2012 Chevrolet Silverado LTZ 3500 SRW CC SB 4x4 D/A in Graystone metallic. Here at Advance Auto Parts, we work with only top reliable. "IF YOU DON'T TREAT IT LIKE A TRUCK IT'S JUST A REALLY BIG CAR". Removing both the AC and main serpentine belt, ( one at a time) is what my 2003 Silverado factory service manual says to do for troubleshooting pulley noise. Un-obstruct the blower wheel if it’s lint-obstructed, but replace it if it’s loose, damaged, or worn out. Add your vehicle for an exact fit. With the belts off and the motor off, you can spin each pulley by hand to see if you hear or feel any grinding, squealing, or other odd noises. CHEVROLET 25% PRO SERIES WATER PUMP ONLY DRIVE KIT WITH IDLER/TENSIONER. I recently had the steering rack replaced and when I got it back the truck developed a hissing type noise. mens sweater gap Hyundai Veracruz Idler Pulley; Show Less. Expert Advice On Improving Your Home Vid. Up in Canada the weather has now warmed up enough to have the window down and I've recently started noticing whining noise from and isolated it to the engine. All Pick Up in Store Ship to Home Sort By: Compare. indian roommates fremont ca 67" Insert Dust Shield Retainer Spacer Steel Rubber Black "Bearing is real noisy!I might just return it and put my old one back inIt has 70,000 miles on it and it runs much 2020. Complicated damages to your idler pulley. Idler pulleys are engine pulleys that are responsible for guiding and tensioning the engine drive belts. For hose; place one end of hose against your ear and probe around the engine bay touching the various parts with the other end to locate the noise. As others have said, the crank pulley is affixed to the crank itself. Few thoughts, and I am not sure any make a lot of sense. Model Year 2020 Silverado showing the: VIN and Engine Overspeed Event Data. Spray a little water on the belt, if the noise disappears, you need a new belt. Push/snap bearing seal back in place. However, in this article, we are going to find out why the Silverado idler pulley makes noise. Buy GM Genuine Parts 12669569 LC9 5. to/c/178/G/drive-belt-pulleysLearn how to diagnose squealing and chattering noises coming from under the ho. They should spin without any obstruction and there should be no noise. The other common things that can make a metalic squeak/ rattle with the belts is the AC belt tension adjustment pulley. Belt Idler Pulley Bracket - GM (12669865) MSRP: $60. Take the belts off, spin each pulley by hand and pull it back and forth to check for play. It’s also common for a worn out pulley or idler tension pulley to cause a clicking sound as the belt spins. to/c/178/6/drive-belt-pulleysThis video shows you how to install a serpentine belt idler pulley on your 200. Allows for the operation of various pulleys, and drive belt accessories, with the use of a single belt Creates a secure point of contact with the pulley, which allows for traction Original equipment. 1 - 24 of 732 results for Idler Pulley Compare Refine. Symptoms of a bad tensioner pulley include difficulty starting the car, loud grinding or screeching noises, a loose engine belt, and a lack of power when trying to speed up the vehicle. Pack bearings with appropriate bearing grease. What is white noise? Learn how different sound frequencies combine to create white noise. Test-drive the vehicle to confirm the condition no longer exists. Sometimes it wouldn't make a noise and instead be a squeaking type noise like a worn belt. Disconnect the wire harness from the backside of the alternator. I have a new, 1200mi, 2020 Silverado LT Trail Boss that has had a noise in the front since day one. This video will show you how to replace the serpentine belt, belt tensioner, and both idler pulleys on the 6. “I have a 2000 K3500 with the 7. For awhile it's had a rumbling/growling noise while idling. Time to replace before the bearing gives out and shreds the belt!Patreon Campaign: https://www. ACDelco GM Genuine Parts Idler Pulleys 12720530 Idler Pulleys, GM Genuine Parts, Serpentine, 6-groove, Steel, Black, Cadillac, Chevrolet, GMC, Each Part Number: ADO-15-40607. Started getting a 2nd noise (sounded like lifter clatter) and this was less than 2 week-ago oil change from dealer (bought one of those. Sentra and Versa CVT has a single gear shift that can occur between 20-50 mph, depending on the throttle opening. This whining noise can be caused by a bad serpentine belt, a boost leak or a vacuum leak. If you hear a chirping or screeching sound from your car, it could have a bad idler pulley, bad tensioner pulley, bad water pump pulley, or another type of bad pulley. If it does, the cause is a lack of grease in the bearing, a sign it will fail soon. these were NAPA part number 38001 and 38006. If you are handy, remove the pulley from the tensioner, remove one the plastic seal of the bearing with a thin flat screw driver, thoroughly clean the bearing, then re-pack bearing with fresh hi-temperature/hi-speed electric motor grease, close the seal. 0L LM2 Sierra 1500 2020 2021 Yukon Models 2021 2021 3. With single or dual alternators. denial permanente The noise should disappear with the belt off if it's in the A/C, alternator, tension or idler pulleys. Your truck's engine supplies all the power you need to move down the road, but it has more functions than that. Step 1 - Release tension on the drive belt and remove the belt. Computers are usually designed to be relatively quiet while running, so a clicking noise likely m. I just posted a writeup on how to replace the tensioner. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Very loud generally does it when first start up the vehicle and do moderate rpm increases. If you go to a mechanic, their labor costs will probably be about $45 to $100. Engines with serpentine belts, like the one in your Dodge Ram, are routed in a specific way to ensure that every accessory is receiving the proper tension. A loose power steering pump pulley or mounting bracket will make a rattling sound too. 2012 chevy cruze headlight bulb. craigslist lynchburg cars You don't need a third-party app to drown out noise. If you have a steel pulley then continue looking for the source of the problem. Silverado 2500 Sales Techs: Connect Now M-F 8:30A-11P, Sat-Sun 8:30A-9P. The transmission front case cover will need to be replaced more than likely. Your pulley may wear out, slip, or be damaged altogether. Check if this fits your 2008 Chevrolet Silverado 1500. Allows for the operation of various pulleys, and drive belt accessories, with the use of a single belt. Shop for New Auto Parts at 1AAuto. Pickup trucks cater to a wide assortment of. Figure 1 depicts the view of the belts underneath the air intake. Your pulley may wear out, slip, or be damaged …. SOURCE: Chevy Silverado 2001 trouble removing serpentine belt. my truck has 9,800 miles on it and it has been in the shop twice, hopefully i will not have anymore problems. So I recently bought a 2017 Silverado 1500 z71 and I noticed there is a high pitched whining noise coming from under the engine. In most cases, the squealing sound comes from a worn-out belt. 2019 GMC Sierra 1500 Idler Pulley. 0L Idler Pulley, Tensioner, and Serpentine Belt Replacement. cvs near me job Step 1 – Rotate tensioner to release belt tension. “Woe unto them that call evil good, and good evil; that put darkness for light, and light for darkness; that put bitter for sweet, and sweet for bitter. 3L V6 > Belt Drive > Idler Pulley. your first thing to try would be to tighten up the belt using the adjustment on the idler pulley. Shortly after, the belt started to squeak when the engine was cold, and it was a bit worse if there was moisture in the air. It is a small, wheel-like device that is responsible for maintaining proper tension on the engine’s belts. I use the special tool for the AC belt, but couldn’t get it. One common bad idler pulley symptom is unusual chattering, chirping, or squealing noise from the car. The cover's primary purpose is to protect the many components within the cover, such as the ignition sw. Loose Screw and kennythewelder. to/2oYsy0iThe YJ is BACK !!! This time Im told - its maki. But at idle, the noise is pretty obvious. Designed to charge your car’s battery and power the electrical system, a failing alternator can leave you on the side of the road with a dead battery. That dancing movement creates a vibration, almost like plucking a guitar. Subaru Engine Whining Noise Diagnosis -- Drive Belts and Accessory Idler Pulley Replacement. US Cargo Control L Track Tie Down System, Includes (2) 4 Foot Black Anodized Aluminum L-Track and (4) Black Single Stud O-Ring Fittings, Versatile Trailer Tie Down System for Trailers and Truck Beds. Notes: Accessory Drive Belt Idler Pulley. The truck had 400 miles on it when I got it, so don't know how it was treated in the first 400mi. hartford craigslist cars Home Forums > Tacoma Discussion > 2nd Gen. Aug 16, 2022 · Reel American Outdoors. The description of the noise seems to match what I am hearing but the conditions seem to vary compared to mine. The idler pulley is a small wheel that’s located in the engine compartment, typically near the front of the vehicle. Price: Alternate: No parts for vehicles in selected markets. Step 1 – Release tension on the drive belt and remove the belt. Hello all, I'm hoping you can help me with this weird humming noise I have coming from the engine compartment. The oil pump cover bolts torque down to 8 ft-lbs. If you hear a chattering, chirping, or squealing noise in the car, it's likely from a bad belt or from a seized or loose bearing in the pulley. Dec 27, 2021 - This service bulletin provides a service procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3075 Set. The serpentine belt diagram (often found attached near the radiator) Optional- A flat bar to help work the belt off. A belt that's starting to disintegrate will show damage to the ribs or cords, which can usually be seen without dismantling anything. Designed utilizing the latest technology, this GM Original Equipment Crankshaft Pulley by ACDelco features premium quality and will perform Designed to deliver trouble-free, consistent performance Right for your vehicle and lifestyle. I'm thinking it might be an idler pulley but. Underdrive pulleys on vehicles have been around since the 1950s, commonly mounted on street performance hot rods, and much later on the Ford Mustang. Sounds like it's coming from a pulley, close to the alternator. Is there a way to prevent it? Advertisement The problem you are describing. The parts and labor required for this service are How It Works. The noise gets worse if you turn the a/c on. Release the tensioner slowly back to the spring stop. Belt timing pulley tensioner cloyesPulley tensioner dorman accessory belt drive Tensioner pulley partsavatarContinental elite accessory drive belt tensioner pulley-49053. It starts only after the truck has warmed up and never does it at idle nor when in park or nuetral. i have replaced the a/c, belt and pulley probably 2 yrs ago. Meaning that when I accelerate and my RPM's raise, the noise raises with it getting louder and higher …. The idler pulley rotates together with the drive belt as you drive your car. 0L 10-Speed 2020, GM Original Equipment™ Crankshaft Pulley by ACDelco®. Usually, the idler pulley is held in place with a bolt, so grab the right socket and start loosening it. CHEVROLET > 2021 > SILVERADO 1500 > 5. But the cause he discovered was related to the pump. Advertisement Bearings typically have to deal with two kinds of loading, radial and thrust. Could be, but most off the time its caused by a worn serpentine belt. Drive Belt Idler Pulley - GM (12729057) MSRP: $103. masonic catalog mccoy Works great!!!! The customer service is excellent!!! Restores performance - fixes a failed, squealing or groaning noise from a worn idler pulley; Application specific - reverse engineered from the original design on certain vehicle. There should only be 1 pulley thats not on something (alternator, power steering pump etc. That’s exactly what it was, Idler pulley- new serpentine belt - $350. What is stopping me from buying it is this particular truck has a noise that sounds just like a small exhaust leak. 5L EcoBoost and I’ve noticed a slight oscillating noise coming from one of the pulleys. When you find an increasing noise level, you need to replace the worn-out pulley. As the tensioner gets looser, the belts are going to make a squeaking or chirping noise. The price of the 2020 Chevrolet Silverado 1500 starts at $28,095 and goes up to $54,895 depending on the trim and options. Equip cars, trucks & SUVs with 2021 Chevrolet Silverado 1500 Idler Pulley from AutoZone. AISIN FCT-013 Engine Cooling Fan Clutch - Compatible with Select Toyota 4Runner, T100, Tacoma, Tundra. Buy GM Genuine Parts 12703922 Belt Idler Pulley: Idler Pulleys X AUTOHAUX Idler Pulley for Chevrolet Express Silverado 1500 2500 3500 for GMC Savana Sierra 36299 Idler Pulleys with Bolt 17 mm 0. 24 Coolest Belt Tensioner Pulleys in 2020. I did a timing belt kit replacement w/water pump at 160k miles and I now have 215k miles, that's ~60k miles on the components. Idler pulleys are not mounted to an adjustable bolt. $60 - $70 (1) $70 - $80 (1) Chevrolet Silverado 1500 Idler Pulley; Chevrolet Cruze Idler Pulley; Chevrolet Malibu Idler Pulley; Chevrolet Impala Idler Pulley;. to/c/105/ad/serpentine-belt-tensioner Did you know that squealing belts or pulleys may . craigslist fort collins personal 2021 Chevrolet Silverado 1500 Spark Plug;. Equip cars, trucks & SUVs with 2010 Chevrolet Silverado 1500 Idler Pulley from AutoZone. 6L Duramax Diesel engine found in the Chevy Silv. The idler pulley might make some noise when it starts to go bad. Truck used - 04 GMC 2500 - Engine code 2 ACDelco Serpentine Belt - https://amzn. Are Jay the redneck changing both idler tensioner pulleys on a 2007-2014 5. Try and spin the tensioner pulley to see if it spins freely or grinds while turning. 12605492 for Chevrolet Silverado 2500 HD Gas 2020-2023 Black Metal: Idler Pulleys Replace the old or broken belt tensioner to avoid noisy tensioner pulley and no longer withstand belt noise, achieve proper belt tension, alignment, ensure the well …. The whining noise is usually caused by engine mounts or transmission mounts. Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type. The most common reasons a 2020 Chevrolet Trax engine makes a ticking noise are low oil level or pressure, an issue with the ignition system, or an exhaust leak. All the bearings in the idler pulleys appear to be smooth. It can also be caused by a damaged pulley, which creates a loud noise. 2003 Chevrolet Silverado 1500 Idler Pulley. warm the truck up to the point of it making noise remove the serpentine belt then start the truck see if the noise is gone. This video is applicable to the Chevy Silverado or GMC. I often wonder if GM is sourcing some parts from China, like the main bearings and lifters. A creative solution is to grab a new set of. I know there is extensive info on this forum relative to the 2nd idler pulley installation to hopefully eliminate the " valve lifter, heat shield, low octane" type engine rattle on acceleration on the Ford 6. Vehicle speed sensitive — The vibration/noise only …. Grinding noises can also be a sign that the alternator is wearing out. Stout Custom•26K views · 9:11 · Go to channel . It only happens when the engine is warm and at idle. I jacked up one front wheel and moved the tire back and forth at three and nine o'clock position while watching the center link, pitman/idler arm area. Start troubleshooting by taking off the serpentine belts one at a time to narrow it down. Idler Pulley/Tensioner Pulley Noise. craigslist las cruces trailers The idler pulley on your Chevy Silverado is designed to help guide the serpentine belt on its path around the engine pulleys, which keeps the belt moving and operating smoothly. The idler pulley’s function is to make sure the belt stays aligned so that the belt stays on the crankshaft and accessory pulleys. To my somewhat-trained ear, it sounds like its coming from a pulley on the top of the engine. 3L V8 Gas OHV 1 : GM Original Equipment RIGHT SIDE PULLEY …. If either of those pulleys seize up the belt will likely continue to move by sliding over the pulley, but the belt will wear out very quick and then you will loose everything that it drives. The noise is usually heard when you hold the throttle at a steady RPM. ” If you’ve ever had to get a construction permit, you know that. We need to quiet this customer's loud fan belt tensioner pulley. A bad pulley will be rusted and rotted, which can cause premature wear on the serpentine belt. tv schedule indianapolis indiana This range does not include taxes and fees, and does not factor in your unique location. The cost for the new part should only be anywhere from $40 to $90, while the cost of the labor will be anywhere from $40 to $110. Characteristic noise being amplified by the transmission bell housing. Filter By: Filter By: Outside Diameter (mm) 52 -- 71. 2020 : Chevrolet : Silverado 1500: High Country, LT, LTZ, RST: 3. The depth of the damage can be …. But don't throw parts at it, try to pinpoint if the intermittent noise is alt related, or the idler just below it. $35 - $40 (1) $60 - $70 (1) $70 - $80 (1) $80 - $90 (1) Add your vehicle for an exact fit. Check if this fits your 2019 Chevrolet Silverado 1500. Verify parts fit and get product recommendations. Misaligned pulleys or a seized tensioner or idler pulley can generate some noise as well. So I have had a winning noise coming from the front end at speeds over 20MPH and today I took off the belt and gave all the pulleys a spin and a pull, all of them seemed fine minus the tensioner pulley. However, the differences between idler pulleys and tensioners also extend to purpose. his lost lycan luna chapter 28 Summary: General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5, GMC Acadia and Chevrolet Traverse vehicles and 2020-2021 Chevrolet Silverado 1500, GMC Sierra 1500 vehicles. The serpentine belt should route around the alternator approximately 270 degrees. This pulley can break down over time. The noise usually comes back as the belt dries. You could find a piece of hose, and put one end to your ear, and point the other around, to hear where the noise is loudest. Use headphones for better audio quality. Here’s a more detailed list of the reasons why you hear idler pulley noise coming from your engine: 1. Chevy Silverado 2020, GM Original Equipment™ Crankshaft Pulley by ACDelco®. 7 v8 hemi big horn! truckDodge ram 1500 idler pulley 2008 dodge ram 1500 hemi v8 truck2008 dodge ram 1500. Get Yours Today! We have the best products at the right price. Backed by over 50 years of car parts experience, fix it once and fix it right with Four. com/scanner/Get Factory Service Repair Manuals & Specs https://www. Turns out I had a leak between the front and rear power steering lines (loose connection) and my ps pump was whining. The idler pulley is worn out by friction with the motor belt. ACDelco (13) Autotecnica (5) Continental (9) Dorman (3) Duralast (13) Litens (7) tensioner assembly and idler pulleys. Here we have a 5 minute video on how to diy idler pulley and serpentine belt replacement without the special chevy tool. coleman 6250 generator manual Find aftermarket and OEM parts online or at a local store near you. Installed this pulley 2 years ago and its still going …. A belt tensioner pulley arm should not move more than 1/32”. has since driven the truck off a cliff to solve the chirping problem. Pulley Outside Diameter (mm): 76mm. 3L 551943: Idler Pulleys Idler Pulley, and mounting hardware; Uses 74" Belt (740K6) Must be used with GM Water Pump (ICT # WAT311;. The car can still run for months or break after a few days. 2005 Chevrolet Silverado 1500 Idler Pulley. cordova houses for rent Squealing serpentine belt noise can be caused by a worn-out belt, a bad tensioner, or a stuck pulley or bad idler pulley. Tensioners send pressure to belts that drive. The pulley not spinning is the AC pulley. Keep high torque drive (HTD) timing belt systems running tightly with these idler pulleys. Then gently push the pulley out of the drive belt and take it out. I have seen this issue all over FB groups and Forums with the same result. Be extremely careful of moving or hot parts when doing this. By the way, a squeal that goes away in 45 secs is usually the belt. With the hood open, it sounded like it could be coming from the alternator or the AC compressor. A squealing noise is indicative of a problem, but might not require replacement of the belt. Allows for the operation of various pulleys, and drive belt accessories, with the use of a single belt Creates a secure point of contact with the pulley, which allows for traction. Notes: Drive belt idler pulley.