Differential Bearing Noise

Pinion bearings have a constant high pitch noise, because it rotates at a faster rate. So, bad thrust washers, loose pinion bearings, loose axle bearings, large end play on the drive shaft will all cause clearance problems. There are side bearings and a pinion bearing which can pit or deteriorate, causing your rear differential noise. Buy All Balls Differential Bearings and Seals Kit 25-2077: Bearings - Amazon. Jeep Grand Cherokees are prone to having several common mechanical problems. You may even be able to hear the faulty bearing. Here a few things to look for if you suspect something's off: Worn carrier bearings. 2005 Wagon, 5 speed, 150k miles. My front diff started to make big growling noise, I drained front diff oil and there was a handful of metal (from bearings I assume). People complaining here seem to be blaming gears for noise but bad/defective bearings will make a lot of noise, particularly under load. com offers 285 ball bearing 6209-2z products. If your car makes a rumbling or whirring noise when traveling faster than 20 mph, worn carrier bearings could be the culprit. Quick Performance Inc. When a rear axle seal goes bad, it's typically noticeable by gear oil leaking all over a rear wheel, and it may get into the brake drum and reduce rear brake feel. Now, I think it could be done easier. The front differential in All Wheel Drive Astro/Safari vans is an independent front suspension design that shares many traits with those found in other GM compact and mid-size trucks. Jeff Dodge Dakota JOIN HERE 5/10/2002 20:05:23: RE: Noise. Rear Differential Coupling Growl Noise Repair Procedure (Continued) 7. It's tough to write a standalone article about a saddle or a bottle cage on its own without torturing all but the most gearnerdly among you. Ring and pinion additive for noise reduction If you are having the work done you might consider replacing the axle seals or even the wheel bearings at this time. By Chris Bergemann. Since I bought it, I have noticed what sounds like loud wheel bearings in the rear, but have been thinking that it could be differential noise as well. They said "For sure" the symptom is a compromised wheel bearing, and "You'll want to replace those rear CV Axles soon too, but that noise is from this Rear-Right wheel bearing". and none of the axel bearings seem to last to long. SLS Import- und Export Handelsgesellsellschaft mbH Industriestr. Remove the diff cover so you can inspect the diff. Opened the pumpkin to inspect the ring and pinion and they are in both good condition. My differential makes a whirring or howling noise. Drive Axle And Bearing Noise Symptoms. MOOG has hub assemblies with OE style bearings and superior seals to. When I replaced it it was dry and there was wear showing on the bearings. html "Front diff bearing differential side bearing replacement. rear wheel bearing failure like I did. Late Model Restoration offers a rear axle bearing and seal kit to get your axle back to new. Douche sold it to me didnt tell me that the bearings were gone so I installed it in my car for a week and took it off. Using your finger, press a. What is causing a Chevy s10 to make a popping noise when turning? When will a bad throw out bearing make noise?. These internal components undergo rigorous testing to minimize the risk of noise and improve real world drivability. The front fluid came out almost new and the rear fluid was black. NOTE:The seal and bearing can be removed at the same time with the bearing removal tool. The other possibility is that you do have a bearing going out in the rear end. I took them to a machinist who put on new bearings I'd bought at Moss. The noise only occurs when the wheels are being driven, and is the same whether driving straight or turning to either side. Built to Perform, Built to Last. Loose or rough front wheel bearings will cause noise that may be confused with rear end noise. Jeep Grand Cherokees are prone to having several common mechanical problems. [Query:]I have an '88 740 GLE Turbo with 113K miles and a 3 speed auto with electronic overdrive. The differential is found on all modern cars and trucks, and also in many all-wheel-drive (full-time four-wheel-drive) vehicles. The wheel bearing is pressed into the back of the wheel, before being bolted into place. Many differential components are mounted on bearings. If one of the bearings in your differential becomes loose, or if thin differential fluid is causing metal on metal grinding and untimely wear you might experience the following symptoms: A whirring noise either while decelerating or at speeds that exceed 15 mph. I have been given 2 rear diffs from FL2 and will rebuild one, I have a bearing kit coming from the UK and will post part numbers and bearing numbers to carry out this repair as only the front pinion bearing is available from LR. Under acceleration, coasting, down shifting, turning left and turning right, you are changing the load on the bearings. The MOT tester agreed and after replacing bearing all was well. Rear Wheel Bearing Bearings solved I replaced the right rear wheel bearings today, no more noise!!! If anybody is interested, I read the manual and I omited several steps. They came up with a $3800 bill! They want to replace the entire differential assembly as well as the rear wheel bearings on each side. There is a persistent thumping, clunking, or groaning that comes from the drive train while driving and/or turning. Ford used the axle from around the 1957 model year right up until the early 1980’s in cars and trucks. I understand that it was the first year and all. It's a very slow and gradually building noise that dissipates and comes back in 1 or 2 second intervals. My R/T is not a daily driver nor is it driven hard in corners, so they should be fine for my application. ANYONE else have this problem, because i cant seem to find a solution?. They told me that there was a lot of noise coming from the front diff and that the front CV axles had a lot of play at their connection with the differential. It is often difficult to narrow down the source of these sounds. -New OEM bearing. Left front wheel bearing new. AU Diff Whine. Bearings may spin smooth without a load but go bad with weight on them. If an old nut is used, it could work loose and destroy the preload of the bearing. The owner, on his way up north next week, was concerned he wouldn't make it safely and asked our technicians to diagnose the noise. From the rear end. I can turn the left wheel by hand with the brake caliper removed and get a little whine noise from the transmission. Clunking or squeaking noise may indicate a worn joint, so install one of our quality replacements to avoid complete failure. Plan to keep this ute and work on it so will replace the diff, but until then what additives are available I could add to a thick gear oil that would reduce. If its wheel bearings steering left or right will usually alter the sound. If the drum bearing is worn out, the dryer may make noise. Right okay, your on the right track, first of all, ive had all sorts of noises on cars brought to me over the years, & they can be tricky to pinpoint as your finding, as for coasting in & out of gears, if this was a layshaft bearing gone in the gearbox, then dropping out of gear with the clutch dipped you should hear the noise stop, but if its the diff bearings going wont make any. Out of stock. Built to Perform, Built to Last. Car problems like these, need to dealt with immediately. Front/Rear Differential May Develop Noise Due to Worn Bearings Problem Description The front or rear differential may develop an abnormal noise due to worn bearings or another internal fault. I'm thinking Pinion bearing. see whats coming out if anything. Observe the reference marks and install the differential bearing caps at their original locations. Most manual transmission issues originate not with the transmission itself, but from related components like the clutch assembly, linkage, or driveline: the components that transmit turning power from the transmission to the wheels. If it makes its noise under load, the main bearing took a dump. All of our Mercedes differentials are. 2" reverse cut ring gear. Remove the fill plug,. The rear differential drive pinion bearing, in LR2 models between 2008 and 2011, is known to deteriorate, causing an excessively loud humming or whining noise. Jiffy Lube® drains the used fluid and replaces it with differential fluid that meets or exceeds your manufacturer's specifications. I don’t recommend using anything but a slide hammer and a set of axle bearing pullers. Many modern BMW differentials suffer from bearing noise, this book will show you. If one of the bearings in your differential becomes loose, or if thin differential fluid is causing metal on metal grinding and untimely wear you might experience the following symptoms: A whirring noise either while decelerating or at speeds that exceed 15 mph. The new carrier bearings were pressed on with the press and one of the old bearings. its been leaking for about a month now, and its a slow leak. What Causes Noise From Wheel Bearings? Wheel bearings are attached to the wheel and are constantly moving. But when I go forwards it's fine. The noise will change with the load on. Thank you all for your help. You may even be able to hear the faulty bearing. I highly doubt your rear end would "lock up" if something let loose… usually they grenade, especially at higher speeds. noise sounds almost like a knocking. BMW E81 1 SERIES DIFF OR WHEEL BEARING NOISE. Cadillac CTS 4 Rear Differential Noise. Took both axles to dealer and they switched both bearings for $200. If it is that then its the diff that needs changing not the axle. Also, diff noises usually change depending on the load on the diff, so if you're cruising on the highway in 5th and go from full throttle to no throttle, a diff will sound a lot different but a wheel bearing noise won't change much at all. Replacing this bearing may solve your loud drive train issue. Rather, the inner joints can experience some abnormal wear. I've been fooling with my rear diff. first off, from my exp. As a bearing begins to wear, friction increases and metal material is worn down making often bad noises until it finally fails. Between 60-65, it annoyingly loud though the harmonics quiet somewhat by 70mph. This can indicate a worn or damaged outer CV-joint. Rear Wheel Bearing Bearings solved I replaced the right rear wheel bearings today, no more noise!!! If anybody is interested, I read the manual and I omited several steps. Note that tires that are "chopped" or "scalloped" (worn in patches) also make a rhythmic noise that increases in speed. The automotive differential is designed to drive a pair of wheels while allowing them to rotate at different speeds. It was equally loud on each. Wheel bearing or Differential bearing springs to mind. How to rebuild your BMW differential and stop it being noisy. My son's 2013 CR-V has developed very high road noise that increases with road speed (starts about 15-20 mph), not engine speed. While there is no help for our singing, we can help you diagnose the sounds coming from a differential gone bad. Vibration and oil leaking from the rear differential seal may also be signs of a failing differential. Rear differential bearing replacement. 2-4 22885 Barsbüttel [email protected] Rear Differential Noise – if you hear howling from the rear of your truck or SUV when you’re driving, it’s possible it’s rear differential noise. Last May I had a car T-bone me at about 50km/hr on the drivers side, after shooting a give-way sign, and then he shot through. It's not that big of a job to replace, and I had mine done. 080" shim is left in place while the new KOYO bearing is pressed on. com, or via phone, 1-800-236-2383 (domestic) or 1-727-842-8000 (local and international), for additional assistance. if if is grinding upon turns and accelerating sometimes the carrier bearings are shot. so I replaced the gear oil. In my experience gears that are set up incorrectly (whether the noise be on accel or decel) usually will whine as opposed to growl. Bafang/8fun BBS01 bbs02 motor rotor for bafang bbs noise problem solution. Front Differential Bearing Noise!! I just purchased a 2002 TB and have been a little shocked by the number of problems on this model year. 8 Ring and Pinion Installation INSTRUCTION SHEET NO PART OF THIS DOCUMENT MAY BE REPRODUCED WITHOUT PRIOR AGREEMENT AND WRITTEN PERMISSION OF FORD RACING PERFORMANCE PARTS Techline 1-800-367-3788 Page 2 of 31 IS-1850-0239 Factory Ford shop manuals are available from Helm Publications, 1 -800 -782 -4356. The noise from something in the transfer case would be a grinding noise, only gears and drive chains for the front diff. Thrust Bearing Issues Special Notes on Honda Differential Noise; Axle Noises. By Chris Bergemann. de © 2019 SLS Online-Shop. First, the design of the Jaguar independent rear suspension uses the axle half-shafts as the suspension’s upper control arms. Find Differential Carrier Bearings and get Free Shipping on Orders Over $99 at Summit Racing!. My friends told me is the bearing. Just try to avoid the cheap Chinese replacement hubs. Bearings whine when accelerating or when reaching a certain speed. Superwheel. Can I keep driving it? Ring and Pinion gear sets and bearings that have just started to make noise do not necessarily require immediate attention, but they aren't going to get better without replacement. An axle bearing can create whine in the rear end, but will be more prominent on one side of the vehicle. Most likely it is the differential and the gears are dry and when they dry out they scorch and cause a noise like this. They said that was a little looseness in the axle. Yesterday I got a new wheel bearing and with that and the new tires I've never heard or felt my Patriot move so quietly or smoothly before. The most common cause of the hum noise is due to the carrier bearing failing. car has only done approx 40 000 k's. Most four-wheel drive vehicles have both front and rear differentials. Install 2nd bearing in the front end using the 3/4" all threaded rod until it is in the second bearing mark. Sometimes people use an additive to the differential oil that makes the noise quieter. member) regarding axle system gear noise variation reduction. After using either of these two types of wheel bearing for so long, they will eventually need replacement. Technician A says that a defective wheel or axle bearing often makes a growling or rumbling noise. If this is dry you could have ruined a bearing in the rear end. Got it up on jackstands and listened to diff and wheel bearings with stethoscope. You can retighten the axle nut to see if the noise. Differential bearings usually produce a low pitch noise. And, it's most common for this to be due to lack of lubrication. This part here is designed to work with the 8. Bad bearing as suggested, or just change the diff fluid for it is. What I did was pull the carrier assembly out start my truck and put it in drive. Next, the gears are heat treated for added durability to endure the harsh environments of a daily-driven vehicle. The problem I have, is the rear end will start shaking with like a kind of grinding type whirling sound Coming from the rear end. Bearing rings and balls are not perfectly round and the balls and raceways, even after extensive fine grinding and polishing, are not perfectly smooth. The 911’s heart and soul is a rear-mounted six with cooling provided by fins and a fan. Changing lanes may cause the noisy bearing to either increase or decrease the noise level. today and determined that it is gear noise. Check the front wheel bearings for noise. Apply a coating of hypoid gear lubricant to the differential bearings, bearing cups, and threaded adjusters. However, it also can be related to excessive bearing endplay, usually associated with inadequate clamping. Now previous experience with other cars have suggested the wheel bearings are cooked but others have suggested diff noise. com has the best Synthetic Gear Lubes available like the AMSOIL Severe Gear® Gear Lube for your differential which Offers Superior Gear and Bearing Protection. Soo, according to the FSM I can replace the crush sleeve and the front pinion bearing without removing the diff? Am I reading this right? I have a terrible grind/whining noise that is getting worse, and its only on acceleration and from what I read on the FSM it would most likely be my front pinion bearing. 5″ 10-bolt rear differential, the parts and processes described herein cover most differential housings. If the gears have been quiet and begin to howl, they are probably worn or wearing. We found the clicking noise source almost immediately, as. Buy All Balls Differential Bearings and Seals Kit 25-2077: Bearings - Amazon. Check prices & reviews on aftermarket & stock parts for your 2001 F-150 Differential Bearing Kit. Found a bad bearing that was for the pinion. Rear wheel bearings make unusual noises when they are going bad. any help on this would be great cause it is really becoming a true annoyance. Our technicians tell us that a complete overhaul of the affected differential is commonly necessary to correct this condition. ADD diffs had a special type of side axle for mounting the ADD hardware. At the rear, the swinging arm pivots on four needle roller bearings. The other possibility is that you do have a bearing going out in the rear end. My friends told me is the bearing. If its wheel bearings steering left or right will usually alter the sound. Find Differential Carrier Bearings and get Free Shipping on Orders Over $99 at Summit Racing!. Bafang/8fun BBS01 bbs02 motor rotor for bafang bbs noise problem solution. Using your finger, press a. It can change in pitch as well as come and go depending on the severity of the issue and load on the diff. This will narrow it to wheel bearings or the front diff (especially if the driveshaft is removed in step 1). The lift makes you suspect the U-joints. Ford used the axle from around the 1957 model year right up until the early 1980’s in cars and trucks. You can retighten the axle nut to see if the noise. Recap of the Issue. Bad bearing as suggested, or just change the diff fluid for it is. Mystery Noise: Differential or Wheel Bearings? So it is speed dependent only? Where in the back does it sound like it's from? One of the sides or in the middle? Also what kind of bushing did you use when you put the diff back in, anything stiffer than OEM rubber and you'll notice progressively more whine the stiffer you go. Excessive vibration will increase bearing noise and can drastically shorten the life of a bearing. Differential side bearings are. I'm thinking the W211 is much like the W210 which means there is a bearing between the transmission output and the differential input (i. But the loud popping noise is a dead give away,you don't want to keep running it without repairing as the bearing fragments will get into the works and do considerable damage not to mention that without the bearing holding things in propper alignment the gears may break off teeth and possibly damage the gear case as well. The noise can also be cause by transaxel/differential problems such as low fluid level. However, the garage stated the gearbox differential bearings were on their way out. It was equally loud on each. When coming to a stop under load it growls. Changing lanes may cause the noisy bearing to either increase or decrease the noise level. Hey All, My wife's 08 AWD Rav with 86,xxx miles has a groaning rear differential. As the noise gets louder the time to failure gets closer. 5/16" Quad X Bearing, Axle and Nut. Safe to use but will get noisier! At one time this would have meant a new Diff, but Landrover have developed a way of doing it. checked axles and there is some movement of the diff bearings where the axles go into the case. For example, a bad right front wheel bearing may change its noise or have the noise go away as one turns left while driving. When CV axles become excessively worn, the constant velocity joints will become loose and click when turning or accelerating. Front Differential Bearing Noise!! I just purchased a 2002 TB and have been a little shocked by the number of problems on this model year. These are disposable and there's no fixing them. About product and suppliers: Alibaba. Modern wheel bearings are manufactured as sealed bearings, helping to protect the components from the elements, water and debris. I have seen a axle come out the side completely though. This axle was making noise while driving down the road. new Front hubs and bearings installed (per state inspection) but still have the rear end whine between 30-35 mph under acceleration only. Just connect the axle puller to the slide hammer and set the attachment inside of the bearing. The Extreme 60 high-pinion front crate axle is the strongest 60 series axle that we offer, designed for severe off-road use with up to 40-inch tires and V8 conversion horsepower. Thank you all for your help. ) It was fixed at a Ford dealer last week and we tested it last weekend on an 8 hours highway road trip. If one of the bearings in your differential becomes loose, or if thin differential fluid is causing metal on metal grinding and untimely wear you might experience the following symptoms: A whirring noise either while decelerating or at speeds that exceed 15 mph. I just recently acquired a very good condition 2007 4Runner Limited fully loaded with 131k on it, new rubber, new brakes and rotors, etc. Apply a coating of hypoid gear lubricant to the differential bearings, bearing cups, and threaded adjusters. It sounds more like the center support bearing as symptoms are the same. Noise is a classic sign of a bad wheel bearing or wheel hub bearing. If there is any play up and down, chances are the axle bearings are shot. I knew it was my rear differential going out, but figured I would hold on as long as I could due to the expense on my Jeep that has over 170k miles on it. The 2005-2010 Mustang V6 Models were equipped with a 7. For example, howling of gears is a sure sign of wearing. However lowering the car has little or no effect on the outer joints. ISSUE: Some 2011-2014 F-150 vehicles built on 1/1/2011 and through 4/1/2014 may exhibit an intermittent click or snap-type noise from the rear axle on initial light acceleration from a stop while in drive or reverse. Thats what I would say too…. For example, a bad right front wheel bearing may change its noise or have the noise go away as one turns left while driving. Thinking about some 33" Deegan 38's. If an old nut is used, it could work loose and destroy the preload of the bearing. In this Article we talk about Diagnosing Noises in Your Car and how and fix them. About product and suppliers: Alibaba. and none of the axel bearings seem to last to long. What should I do?? 2 years ago I changed the rear end seals and bearings, and they still seam fine. Anybody seen or heard of this, or have any ideas? I guess I am going to have to locate another front diff. The noise can also be cause by transaxel/differential problems such as low fluid level. Cadillac CTS 4 Rear Differential Noise. Similar bearings are used for the carrier and axle bearings. Cause of subsurface deformation is static overload. This grinding noise indicates that your wheel bearings are bad, and you should replace them. • Remove the rear axle shaft assembly. Thats what I would say too…. Had a chance today to isolate the cause of the noise. No signs of metal chips, nicks, or any wear on the bearings and gears. If its wheel bearings steering left or right will usually alter the sound. -New OEM bearing. I change the transmission and differential ear lube every 100,000 miles. but I am hoping this will not come back and bite me in the **s!. 6" 10-bolt is still used in most GM trucks), these housings are the most common on the road, especially for trucks. Some customers may complain about an abnormal noise from the rear of the vehicle that increases in volume as vehicle speed increases. 0D suffix are powered by a 2. they are subject to gear noise. From about 40mph, I can begin to feel vibration. Wheel bearings usually give you time as they get louder to confirm its the bearing. Also known as Wheel bearings. A defect detector is a device used on railroads to detect axle and signal problems in passing trains. In vehicles without a differential, such as karts, both driving wheels are forced to rotate at the same speed, usually on a common axle driven by a simple chain-drive mechanism. The noise is most noticeable when coasting or decelerating. The best way I can describe it is like having a rock stuck in your tire. Common causes of axle seal failure are plugged differential breathers or worn wheel bearings. Also, the noise would be there at any speed and it would quiet down or almost totally disappear sometimes when making tight turns at speed (like on a twisty road) for the duration of the turn then appear again as soon as I would straighten back out. HOW IT WORKS: Differentials work with your transmission to deliver power from your engine to the axle that turns your wheels. 4010D Or 4010D4) 052303A 2003-2005 5. Click to view Body Model Lookup List *To minimize the tools necessary to service Chrysler Group vehicles, this usage information is subject to change as vehicles and components are released or updated. A dab of grease can be used to keep the adjusters in position. I have already replaced the front right wheel bearing twice and right rear axle bearing, previously which cost a fortune, and the noise is not dissimilar to when the right rear axle bearing was buggered. What I did was pull the carrier assembly out start my truck and put it in drive. If preload is too low (bearings too loose), differential case movement and ring and pinion gear noise can result. Got a noise or leak in your 1979-1993 Mustang axle? Chances are you need replacement bearing & seals. Well, this car makes noise turning right or leftand starting to make bearing noise going straight ahead. Anybody seen or heard of this, or have any ideas? I guess I am going to have to locate another front diff. see if you got any bearing parts , material, thrust bearing, blah blah blah. FIX - Rear Differential Coupling Growl (Whine) Noise Hey Everyone. How do you make your BMW diff noise go away ? Generally the only way is to take the differential out of your car and replace the worn out bearings with new bearings. It could be the center diff bearings that are causing all this noise or it might a couple different things. This axle was making noise while driving down the road. When the preload is lost, the bearing will make a low frequency grumble. They usually tell you this when you have an outer joint noise or problem. These bearings are part of a rear differential overhaul, taking three to five hours to complete. Cause of subsurface deformation is static overload. Vehicle is 2005 Ford F150, 4. Most likely it is the differential and the gears are dry and when they dry out they scorch and cause a noise like this. Having bearings put in is alot cheaper than buying ring, pinion, and spider gears plus bearings. Similar bearings are used for the carrier and axle bearings. Yes they can and should be re-greased from time to time. It is not recommended that you open up the rear differential mechanism and try fixing it on your own, as it is a complex job. Without backlash, the ring and pinion teeth can jam into each other and fail in a very short period of time. This axle was making noise while driving down the road. If one of the bearings in your differential becomes loose, or if thin differential fluid is causing metal on metal grinding and untimely wear you might experience the following symptoms: A whirring noise either while decelerating or at speeds that exceed 15 mph. I am guessing the rear is kaput. This noise can be confused with front wheel bearing noise. The highest quality differential parts available for race, offroad, or street. Bearing Noise Faulty bearings produce a rough growl or grating sound, rather than the whine typical of gear noise. There is no vibration or steering wheel play, but the speed-related noise is so significant that I assume it must be a wheel, wheel bearing, or some other rotating component. OFFICIAL 2nd gen 4x4 front differential bearing vibration thread 56236-front-end-growling-noise. Also, the noise should be loud when the differential is under full and minimal load. i have got a e90 bwm myself and i am haveing the same problem with my diff makeing a noise. I wonder what the junk yards want for a used one from a newer model year if it will fit. will change in noise level as the load on them changes. Item: The pressed-together crankshaft turns on ball bearings (at each end) and lour enormous split-cage roller bearings at interior points. There are others that the race and bearing can be replaced at the axles and at the pinion. Seams that of all the threads that I've looked at, that clearance is a major factor. Inspect the rear differential coupling body bearing press surface. com front differential bearings for Mercedes Benz 2006-2012 ML, GL and R Series. Obviously with sealed wheel bearing assemblies, this won’t be possible, so the only thing to do is check for noise and play. But when I go forwards it's fine. A wide variety of differential bearings noise options are available to you, There are 27 differential bearings noise suppliers, mainly located in Asia. I know its not tires because i heard this noise before new tires. Vanagon rear wheel bearing replacement I noticed some play in right rear wheel (jacking up van and trying to move wheel, 12 and 6 o'clock positions) and a whiny noise when driving which changed in loudness on turns. Recap of the Issue. These bearings are made to last for many years without needing to be replaced. 8 Ring and Pinion Installation INSTRUCTION SHEET NO PART OF THIS DOCUMENT MAY BE REPRODUCED WITHOUT PRIOR AGREEMENT AND WRITTEN PERMISSION OF FORD RACING PERFORMANCE PARTS Techline 1-800-367-3788 Page 2 of 31 IS-1850-0239 Factory Ford shop manuals are available from Helm Publications, 1 -800 -782 -4356. Grease also breaks down on stored trailers, allowing corrosion to form. If there is rust or corrosion below the yellow line, the coupling CANNOT be rebuilt. That's low mileage for wear, but it could be, or maybe low fluid. If it makes its noise under load, the main bearing took a dump. I was told that mine was the axle bearings, took it into the dealer and it ended up being the LSD. Models bearing the 2. Excessive vibration will increase bearing noise and can drastically shorten the life of a bearing.