How Do ya tell a Carrier Bearing is going Bad - how long can i drive with a bad carrier bearing

2024-10-09 14:30:10

Noise: So far they haven't been able to replicate/hear it. Service advisor's going to bat for me though and is getting another tech on it to try and figure it out. So I'm happy about that. Sadly that means no real substantial news yet.

Installation took me less than half an hour, maybe closer to 20 minutes? Granted I have viewed the installation videos a number of times. This is a good video going over the process. It's for the Escape but since the interior is near identical, it's a good analogue: (90) Ford Escape - SYNC 3 Upgrade Installation - YouTube

In order to test that the bearing is free in rotation I performed a simulation with torque applied as this image shows.Taper bearing test model

However a noise that has been very slowly progressing over time has me bugged especially with only a few months left on the hybrid warranty. Unfortunately last time I had my dealer check it out they were unable to hear anything (to be fair, it was VERY hard to hear even for me at the time) and even now it can only be heard under very specific circumstances. Basically the only time it is heard is with the windows down, radio off, and if I am driving past another car or a wall or object that the sound can bounce off from the driver side. Anything outside of that such as driving in the open or windows rolled up it can't be heard easily unless it is SUPER quiet, no other cars/street noise. The noise though is a very distinct metal on metal grinding type noise, continuous with no rhythm I can tell. And it occurs under any load, accel or decel and seems to increase in loudness if more load is applied.

Is there any possibility of creating a parameter which would represent as tapered roller bearing in the system and transfer the forces further in the gearbox housing accordingly.

202114 — INTRODUCTION A cam is a mechanical device used to transmit motion to a follower by.

I did get my car back and here's the update: Ultimately I had to ride along with a tech to try and replicate it and had to find a good spot in a plaza nearby that I could drive up next to a building and it is noticeable under low speeds too. Was eventually able to point it out to the tech and he basically indicated it was brakes and a normal slight surface scraping even under no use. Not sure HOW much to believe it but the more I hear it the more I am leaning towards it is -some- form of brake related noise. And I do know the front brakes have never been touched in the 4 years/40k miles I've had the car. Just the rears were done, rotors and all. Nothing's been mentioned -yet- on the checkups that the fronts are bad or worn down and braking has been fine.

So fare other than this noise cropping up, this car has been rock solid which I've been very happy with especially given it's a 2013. Other than regular maintenance, I had the APIM replaced under warranty and the washer fluid bottle replaced as it developed a crack and a leak at some point. Other than that, no 12V battery issues, minimal HVB (Energi model) degradation. Just recently upgraded to Sync 3. Quite happy and fully intend to drive it until the wheels fall off if possible.

You can post now and register later. If you have an account, sign in now to post with your account. Note: Your post will require moderator approval before it will be visible.

As we all know that in tapered roller bearing the forces are distributed in axial and radial direction depending upon the angle of the taper.

Maybe someone could ask the Creo developers if they can add "tapered pin" as a constraint type in addition to "planar" "pin" and "ball", or more generically "normal to surface constraint"???

Product Specifications ·A precision bore gauge that makes accurate measurements of small hole diameters (0.95-18 mm). ·You can replace the analogue indicator ...

Disc brakes often make a scraping noise, esp if the disc has had time to rust. Inspect rotor. Maybe a test for this possible cause would be to a) coast in neutral, listen carefully to noise. 2) go down a long hill in neutral using the brakes. This should remove some oxide built-up on the disc. 3) listen again coasting to see if any change to noise. If yes, suspect brakes. Maybe then jack car up and spin wheel.

My local dealership broke the door-handle sensing when they did the door-latch recall fix. They corrected it at no cost to me (as they should), so if your door quit working when they fixed the latch, you might be able to get that done for free. It's been a while, though, so it may be a tough sell.

Let me know how it goes. I had my car serviced (just an oil change) a while back, but I didn't ask them about the metallic sound because it was winter and I couldn't hear it all with the windows up. In fact, when I've been driving with the windows lately this spring I've barely heard the sound, so it might be something to do with my brakes or wheel alignment (I got the latter fixed when I got new tires fitted).

AWD Rear Wheel Hub Bearing Pair for 2013 2014 2015- 2018 Ford Escape Lincoln MKC. FORD ESCAPE 2013-2019 AWD Models. Hub Bearing. 2x Rear Wheel Hub and ...

Bad transmission noises certainly seem to vary. Mine was very slight, it would come and go depending on torque applied while staying in EV mode and around 35-40 mph. It was more of a whirring sound - not a grinding one. It could have easily been ignored except that I was sure it wasn't there before. Even then, I went maybe 50k miles before a hole was worn in the housing and I lost fluid like crazy. I never tried listening for reflected sound through open windows.

When I posted the WAV file initially back in the middle of 2020, @SnowStorm thought it probably wasn't a transmission issue as it could only heard outside the car (or inside with great effort).

Latest update: Door handle looks like it's gonna have to be replaced and I'm skipping on that since the cost from the dealer quoted is about $500. That's been a VERY minor issue. Worst case I'll try the documented TSB when I get the car back that's essentially removing the handle and cleaning/drying the inside and there's some kind of sealant used too. Seemed like an easy enough DIY job last I looked at it.

Finally, in the most simple case, I would think in many models the movement along the taper is negligible due to the taper bearing preload. So a simple constraint based on a cylindrical coordinate system would work (with R and Z , held, theta free.)

Only thing that is not working out of the gate even with the programming is the automatic parallel parking feature. That's a known issue on older vehicle upgrades. The PAM (Parking Aid Module) needs updated. The actual parking sensors and beeps still work however. In my 4 years of ownership I've never had the option to use the parallel parking feature so it's not a huge loss for me. There's also a very minor issue due to a) mine being an older Sync 3 APIM and b) having updated to a newer 3.4 version, when the headlamps are in auto mode and the ambient light quickly changes and dims the interior lights, the APIM screen flickers when it dims. Some incompatibility with the lighting data sent over the CANbus if I understand things correctly. For me its not really that distracting. This one I don't think there's a fix for short of sticking with one of the earlier Sync 3 updates that still has an auto brightness toggle for Sync itself that can be turned off to avoid it (I think 3.4.19101 is the latest with this?). Newer versions remove it and have auto brightness turned on by default.

As yet another option, a complex but probably more accurate model would use contacts at the taper bearing instead of a constraint or load. The mating component(s) would be needed.

Creo is challenged with a taper bearing constraint because it is not a nodal based method, whereas many other FEA programs are nodal based. My first approach might be to model not as a constraint but as a non-uniform load using an equation so the force vector is normal to the taper. (free body method with possible inertia relief) As a second approach, If I really needed to model the taper using displacement constraints instead of loads, I would do as follows.

20211229 — How many bearings are there in a car? · 10 bearings on the steering column: 8 needle bearings (4 per universal joint) and 2 needle bearings on ...

Can't tell front or rear. Doesn't seem to vary with speed best I can tell but will vary slightly in volume based on load. I'm very aware of the rusting as it is quite obvious in noise after it rains and I'll often kick it into neutral for that exact reason on the first few stops to knock off the rust but there's still a slight grinding noise despite that. Sadly I don't have a jack or the space to really do checks like that myself. Though I think at some point I'm gonna see if I can go to an empty lot and have someone drive the car while I walk along side with my phone to get a clearer recording of my own.

2020526 — A6 / S6 (C5 Platform) Discussion - Timing chain tensioner or? - Hi All, I mentioned my car has some noise when its cold.

Do you hear it with ICE not running (EV mode) or with A/C running or not? See if your dealer will run the car on a lift and check with a stethoscope. I think that's how my dealer verified my transmission was bad.

No new info otherwise. Car is with the dealer. Seemed they were backed up and would need to keep it which is fine as I work from home and have alternate transportation if needed. Thankfully the service advisor seemed pretty perceptive of everything I noted. Two comments she made that I made a mental note of is she was gonna have a tech drive around the building to try and get the sound to bounce off as I have been dealing with and she also did specifically mention the transmission and the warranty if it came to that. So cautiously optimistic and keeping my fingers crossed.

Note that there needs to be a band of unconstrained surface between each region, otherwise it will be over-constrained at the shared edge. In my quick example the unconstrained bands are the same size as the constrained ones, but this should be adjusted.Piece-wise taper bearing constraint

When my 2013 "grinding" transmission was replaced under warranty (at 47000 miles), the metal grinding noise was so loud that I had to increase radio volume 2-3 clicks when moving greater than 40 mph (and then back down again when stopped). This was with the windows up. Also, the grinding/thumping was cyclical, not continuous (frequency changed with speed).

Not to discount what's already been discussed, but one other source of scraping can be a dust shield (aka brake disc backing plate) is bent slightly or not square with the disk. These can sometimes get bent enough to rub the rotor during a tire rotation, for example.

Was actually a piece of cake. I did get mine pre-programmed for my C-Max however. I think that is honestly the more challenging part if you plan to do it yourself. DanMC85 over on the 2gfusion forums has a service he offers to provide the correct programming necessary if you want to go the full DIY route: Sync 3 Programming (via Email) by DanMc85 Basically it's just adjusting configuration bits to tell the APIM what vehicle and options it has to talk to now.

I'm coming to the conclusion that under the assumption that even if the transmission starts to misbehave with the bearing issue it does take quite a while for it to start actually being an issue, I am probably going to be safe. Got 2 years left on my loan, after which I plan to build up a repair/trade-in fund. With my job being work from home for the foreseeable future my average mileage is putting me at only 10k miles over 2 years time (which should put me at 90-95k on the odometer). And at the current market value of these cars I can probably upgrade at that 2 year mark to a newer model for pretty cheap if I chose to do so. But most likely I'll drive this one til the proverbial wheels fall off.

The tech at my dealer test drove the car only 4 blocks before turning around and saying something was wrong. He used "chassis ears" to further isolate level and location of noise to the transmission. He also indicated that the chassis ears where also picking up abnormal noise from front wheel bearings, but level of wheel bearing noise was being drowned out by the noise from the transmission. To be safe, they decided to replaced front wheel bearings along with the transmission.

I am attaching a basic image which would give you the idea of forces and constraints but the transfer of force is through a bearing where the forces further applied on the housing linearly without any effect of taper roller bearing and this is creating some unwanted results which does not represent any comparable stresses and displacement done in the Real static torsion test on the model.

Searches for published decisions can be carried out under policy area, case number, title and date.

That's what I'm hoping it is as well. If it's brakes or a wheel bearing/hub or something I'd be a lot happier about paying that repair bill vs worrying over the transmission issue. So far thankfully I haven't heard a peep of abnormal noise inside the vehicle with windows up. Just normal road noise.

I've basically only ever heard it in EV mode. It's JUST quiet enough that it would be hard to hear over the ICE so not sure if it occurs during that or not. A/C is similar. I do plan to take it in to the dealer here in the next couple days for its yearly checkup, oil change, etc. so going to see if I can push them to do a more thorough check this time.

2008224 — Lithium is not quite as thick as normal grease. With tire off the ground, check the wheel for any excessive play up and down to make sure ...

I am taking her in today to get some other scheduled maintenance done. Also my drivers door handle completely stopped sensing my hand about a year back so gonna see if that's gonna be an involved fix or not. Will definitely be pushing to have them check on this noise and see if I can encourage them to also check on the transmission too to be sure. Just gonna flat out tell them I'm aware of the potential trans issues and want to make sure that's not starting to act up before my warranty runs out.

SKF-1612 ... Wheel Bearing Protector Hub Bore Diameter: 3.500 in. ... Quantity: Sold as a kit. Notes: Oil filed bearing hubcap dimensions: 5.25 in. flange O.D., ...

Mar 25, 2011 — Yeah, it sounds pretty obvious that your brake calipers were covered in mud and when the brake shoes clamped down on them, there was trapped mud ...

I am ok with approximation so I would probably model the bearing as two wedges where the material of those wedges models the bearing stiffness and the angle between them models the force transfer from radial to axial and vice-versa. This would be a force equivalent angle, not necessarily the actual angle in the bearing, but probably close. The wedges would have a contact (maybe with some small mu) defined between them and either bonding or contact to the mating housings. Some proof by calculations and simple FEA studies of the approximation could compare and help tweak this equivalent model to a more detailed FEA of the bearing, or to standard taper bearing hand calculations and load factors.

Wheel Bearing Hub Assembly Description. Rear Wheel Bearing Hub Assembly Kit for Toyota Corolla ZZE122R 4cyl 1.8L 1ZZ-FE 2001 2002 2003 2004 2005 2006 2007 - ...

But i want to transfer the forces from the Differential housing to Gearbox Housing and in between i am having a taper roller bearing.

As you can see in the next image, the bearing surfaces can rotate with a torque applied, however they are distorted. This can be improved by dividing into more regions and reducing the size of the unconstrained areas between regions.

Yeah, mine happened well after that. No other work or changes were made around that time. Just stopped working and on the drivers door only. Sensors work in all the other doors perfectly. I do recall seeing a TSB about just needing to disassemble and clean/use some sealant on the inside of the handle. Didn't bring that up, just mentioned the drivers door being the lone one out that stopped working. So we'll see on that one. Not a HUGE issue so if it's more than that like needing parts replaced I'll likely just leave it as is.

So I am very well aware of the known transmission issues on these vehicles in the earlier model years. Got a 2013 here. So far knock on wood with 81k on the odometer it has been behaving.

I considered replacing the Sync 2 unit in mine with a salvaged Sync 3, but it just seemed like too much work in the end. How hard was the swap for you?

Other than those it's 100% functional. Even the energy flow display and charge settings are kept. MyFordMobile still works. On screen climate controls disappeared on the latest update but that's a known thing and I just need to flip literally one bit in the AsBuilt data when I get the car back to re-enable it.

Normally I would just say this is a wheel bearing somewhere but with the known transmission issues and the end of warranty coming up it has me a little spooked. Any thoughts especially from those who have dealt with the transmission failure before?

This taper roller bearing would modify the forces while transferring it due its nature. How could I create this effect in virtual analysis?

Separate the bearing surface into many smaller surface regions with coordinate systems for each surface region pointing in the correct direction for constraining that local surface. This is essentially similar to how it would be done in a nodal based FEA system, where each node would have its own unique local coordinate system to define the direction for its displacement constraint. The main difference is in Creo, for a 3D model, surfaces need to be used because a point constraint makes a singularity.

Sorry, I think the question is not clear. Also, getting correlation to a real test on this assembly might be beyond what the community can assist with. The details and time involved will be extensive and complex. There are many questions to pursue.

The C-MAX Hybrid forum is not affiliated with, sponsored, endorsed, licensed or approved by Ford Motor Company. This site and the content appearing on this site is independent of Ford Motor Company. Powered by Invision Community

bearing

How Do ya tell a Carrier Bearing is going Bad - how long can i drive with a bad carrier bearing

You Might Also Be Interested In