As we reach 10-20 MPH after starting again, the noise and vibration occurs for about 3-5 seconds. It's at a transmission shop now. no vibration or loss of power during acceleration with noise presant. The tape is being. Stop everything right now and back up! Recently, my computer has been making a very loud grinding noise when I boot from cold. grinding wheel, when grinding gears . On neutral gear, I paddled the gas the sound goes louder but when I press the clutch and then paddle there is no sound. No one enjoys hearing their car make those awful grinding noises because that's usually a sign that the car needs a repair. " Get a new mechanic. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. [INVESTIGATING] Gear Grinding Noise w/clutch: There is excessive gear grinding noise when using the wheel with manual & clutch. 720 pop out of gear, grinding sound discussion in the John Deere forum at Yesterday's Tractors. I assumed that when I needed to rotate the collar sleeve to make my second and 3rd cuts with the angle grinder that I could simply spin the tires and the collar gear would spin, but this is not the case. some of these tractors have square cut gears and they are bound to make some noise mine does. This would make a screeching/grinding noise when attempting to put the car in gear. gear grinding noise I have a customer that says the machine is making a gear grinding noise. Also, when I'm going in reverse, there's no noise except if I turn the wheels sharply, like when parking. The only thing left for me to replace is differential spider gears. If the noise goes away when you remove the options, reattach them one at a time. ----The metal clutch dog slides into the gears to engage and drive the propshaft. Average repair cost is $1,520 at 127,600 miles. George Lowy. Just pedalled up and down testing it. after a couple of days, it started making loud thumping, and extremely loud gear grinding noises when it starts - 2675411 - 3. On cold start it has a scratchy/grinding noise occasionally. Particular importance is attached to the energy efficiency of the machines. If I press the accelerator pedal even a little at any point, the noise immediately goes away. This a common problem to just ignore, or is there anything to fix the heat shield aspect of it?. During low acceleration in 1st gear, my car makes this metal grinding/rattling noise coming from the front of the car. Welcome to the club! RELAX – there is nothing wrong with your transfer case. I thought it's rattling sound from heat shield or something, but I have eliminated all this possibilities. so, i'm having some difficulty with my 83 heritage. I have a growling and grinding sound coming from the right rear wheel on my 1999 E-Z Go Freedom Electric Golf Car. While looking for replacement transmission found a site where many other 2003 Toyota Corolla owners with manual transmission were having the same issues. Hi, A question for you guys: Today when pulling away from a junction the front of the Jimny seemed to make a grinding noise. Sounds like baby crying. Either way, I might as well check the flywheel Does anyone remember what size socket to use to turn the crankshaft nut to rotate engine (to inspect the entire flywheel)?. The slide will go out about 1 foot and then the gears start making a grinding noise. , CNC gear grinding up to 20 in. I was wondering if it's low on gear oil would it make that sound. A couple things can cause this, both related to the clutch. I hear it just before is shits from the first to second geat (automatic transmission). Sounds like something is stuck or a gear is stripped. I’m not sure if this is the same thing as the “flexplate” concern mentioned above. I'm not kidding. George Lowy. Experiment with samplerate of existing sounds. So today I drove my truck to work and am hearing a grinding noise up front on slow left turns. Blinking lights may accompany the noise. it sounds to me like a mix of things i thing one of your bearings inside the actual gearbox went and it left play in the gears. So it's rpm related, it only does this when in gear, the noise is worst at 4th gear. The vehicle is a Mercedes-Benz 308D, a T1 van, year 1992, model 602. Often, gears have to be treated by a combination of these operations, e. But, really, work trucks are quieter today due to better technology, which is driving the need for axillary power to do the same. I took the rear bulk head out and inspected the gears and mesh. when this happens there is no power to tranny. If you’re not exactly mechanically inclined, the only sure-fire way to find out why your car is making a horrible noise is to take it to a mechanic for a diagnostic. Have a transmission shop check it out before driving it again (if. I have tried tuning the clutch lever free-play but I still hear that sound. Bad news - the IWE already has the shield installed over top of it. When I twist the washplate manually, I can recreate the sound. This problem often begins with a grinding noise whenever you try to disengage the clutch and eventually gets bad enough that you can’t get the car out of gear. I use to have a grinding noise when put in gear forward or reverse. See all problems of the 2010 Honda CR-V. I put everything back together and while rolling the truck without the pinion touching the spur it makes a grinding type noise and i can feel it catching slightly. Its founding members come from various countries and have a selection of diverse backgrounds ranging from artificial intelligence and software security to industrial design to professional tournament game play. The noise also stops after about 20 minutes of driving at higher speeds, even when I drop down to 25 or less, where I'd normally hear the sound. (double clutch) quickly and if that solves the problem the synchro rings or blocker rings are worn as well as bearings are probably worn out. If a final drive gear is chipped or cracked, you’ll hear a grinding or growling sound that stays consistent even with gear changes. it sounds to me like a mix of things i thing one of your bearings inside the actual gearbox went and it left play in the gears. Why Does A Manual Transmission Gears Grinding Many manual transmission problems will get worse if not addressed. I took it to the shop today, put it in the air and ran the car and i received a nice new years present, its coming from the transmission. It moves fine within that range, but I can't get it to move any more. It is only a half a second noise, but it does not sound Ok. It seems to be some kind of paper gear that is grinding behind the toner/ drum cartridge. Start the engine and put the transmission in first gear. Every situation of teeth grinding is managed uniquely, but often a mouth guard fitted by a dentist is helpful. Car makes really loud grinding noise when in drive gears. It only needs to be replaced if there is some major mechanical problem, like a scarred shaft, major corrosion, or chipped or bent teeth on the gear. Sometimes, you may also need to change the gear cable (in a cable shift mechanism) if the cable has become hard with age. i think you should run it by the dealer to find out atleast if something should go wrong there is documentation of a potential issue before a problem showed up. My 2006 A3 3. If your dryer starts making a grinding noise, pause it mid-cycle and don't reset it until you figure out what's producing the sound. I took it back to the dealership the other day and they are going to check it out again. In order to improve load carrying capacity and noise behavior, case hardened gears usually are hard finished . Computer Grinding Noise = Microsoft Search Index (in my case) Microsoft Search Index was grinding along, eating all my memory. I looked at tractor data and lgt2254 shows it has a Tuftorq hydrostatic transaxle, please explain more about grinding gears, if it is a hydrostatic you have no gears to grind. The 2015 Ford F-150 has 7 problems reported for excessive vibration, grinding noises from transfer case. It also sounds similar to a. This would seize the gearbox temporarily and you would "spring" to a halt rather than "hit a concrete wall". Hello all, I have a 2007 Dodge Caliber manual transmission. Average failure mileage is 13,150 miles. does anyone know about the rear end in these. On a recent trip I noticed a rhythmic grinding sound. The core of this issue is the shaft which can be attached to the motor by a stem. Could this be just a vable out of adjustment or something more complex. I have a 2010 Dodge Challenger SE with the 5 speed Auto transmission. I have tried tuning the clutch lever free-play but I still hear that sound. I ordered a trans,from standard transmission will be putting it in on the 28th it came up graded with shafts and 5th gear. When I shift from first to second and so on , there's a momentary grinding sound during. Took the vehicle to private mechanic and found the issue to be the transmission. This happens with the OD engaged or disengaged. Not all the time, but often enough. When I got it back, it made a grinding noise with the clutch disenganged, so I took it back. It moves fine within that range, but I can't get it to move any more. The RPMs fall at just the right speed to allow that. com Please bookmark us Ctrl+D and come back soon for updates! All files are available in both Wav and MP3 formats. My Canon Pixma MG5220 is making excessive noise; it sounds like gears grinding. A grinding noise is most frequently associated with problems with brakes,. It doesnt do this every time. A bad U-joint can cause a very loud sound when putting the car into gear. See if there is uneven wear or debris. However, when the clutch is pushed, the sound seems to disappear. Both the input shaft and the gears are rotating at different speeds and the syncros allow them to join together, usually without grinding. But I feel the war is lost. I plan to call the dealer but was wondering if anyone had experienced this. I bought a new Mercury 115-HP four-stroke in 2001. It's always difficult to troubleshoot a specific auto problem on the internet, however any scratching or grinding noise is an indication of a potentially serious problem. When I shift the car (while driving) from 2nd into 3rd/4th/5th gear,and accelerate I suddenly notice what sounds like a "grinding"/raspy noise that stays with the car while in those gears. Grind definition is - to reduce to powder or small fragments by friction (as in a mill or with the teeth). It doesn't happen all of the time, but is becoming more frequent. In acceleration, when pushing the shift stick into the 3rd gear position, it will feel as if the clutch pedal wasn't fully pressed. 2 turbo diesel , 60000 on the clock and still going very strong love it with a passion / i have a qusstion to ask , my grand son has had trouble with his zd30 navara gear bos , sticking in 3 rd gear , guess what , pop has to try and fix it for him ,having n. Many times you think it is in gear but it pops out when you let out the clutch. Today I backed it into my garage off my trailer, maybe 10 feet, and it sounded like it was grinding a little. Is the slide room actually operating and making a grinding noise, or just grinding. As we reach 10-20 MPH after starting again, the noise and vibration occurs for about 3-5 seconds. when this happens there is no power to tranny. The car drives and has no trouble putting into gear. The mechanic thought vibration was coming from angle gear when it was on the lift. Instead of grinding noises, automatic transmissions may hesitate before engaging into Drive or Reverse. This troubleshooting guide is intented to help identify and repair manual transmission problems. It is not the throw out bearing, some sort of gear/bearing. Grinding gears: The clutch is either worn or needs to be adjusted. Is that normal or something that needs to be fixed? Any ideas. When i encounter this "grinding" I do not attempt to complete the gear change but try again. com Please bookmark us Ctrl+D and come back soon for updates! All files are available in both Wav and MP3 formats. I also hear all the other sounds that sound very smooth and normal as in all printers. I bought a new Mercury 115-HP four-stroke in 2001. is this normal?i hear a sound like gears grinding when i put my jeep in reverse and drive. It sure sounds like its coming from wheel area but sound does travel well in steel. I have uploaded audio clips I recorded while riding. Grinding/ whistle sound on 5th gear Ano kaya to? Pag 5th gear lang grinding sound sa sasakyan ng kapatid ko. when grinding sound starts you have the shut it off and then put it into park,which does not lock tranny in placeyou can push it and it will move. can some one tell me wats possibly wrong w my car. (I did push the clutch all the way in and do know how to drive standard so I know I was not grinding my gears). I recently purcahsed this 2002 996 C4 Cab with a CPO warranty and ocassionaly find when trying to engage 2nd gear a grinding sound and the need to try once again to shift into 2nd gear. When I change the gear from P to D or P to R, I hear a grinding noise. But the edges of the teeth can be chipped or broken. Grinding sound should match to material shaft is connected to, but if it's unknown just use some metal grinding sound. Took the vehicle to private mechanic and found the issue to be the transmission. Grinding noise while shifting Inspection Service The choice between a manual and automatic transmission by a car owner comes down to issues of convenience, fuel economy, and cost. My VE, for the last month, in the mornings (when it's cold) when I reverse, I get a TERRIBLE grinding/scraping sound. Bonjour, Since a couple of weeks I have noticed a slight grinding noise when shifting in second and forth gear and a significant noise when shifting in reverse. I leaned the washer back and noticed the plastic cage around the pulleys was scrapped in a perfect circle that matched the large pulley under the drum. Blinking lights may accompany the noise. The choice between a manual and automatic transmission by a car owner comes down to issues of convenience, fuel economy, and cost. A grinding noise and slow computer probably indicate the worse. Shafts spinning and shaking. It cant be any of the pulleys or accessories cause it goes away in neutral or park. But in 1st gear there is a rubbing/grinding sound. If I don't have this right, I will repost correctly next time it occurs. It sure sounds like its coming from wheel area but sound does travel well in steel. At first, the dealer thought I was nuts because they couldn't hear anything. Royalty free stock sound clip for personal, commercial, production use A great gear grinding chatter from very fine tooth plastic gears inside of a video cassette player. I went to roll it back up, and after 6 inches it made the same grinding noise. It seems to take forever to stop and everything goes very slow during this time. In this event, the clutch assembly should be replaced. Jillian Delaney Power Tools October 16th, 2019 - 01:00:28. It does not grind while I move the shift lever, only grinds once I set the lever into D or R. Get shopping advice from experts, friends and the community! I have a 42 inch cut lawn tractor; model number 917-272352; The drive axle is making a grinding sound. My father has a Panasonic VCR NV-FS200 HQ, well used and plays ok however has started to make a grinding noise when recording & once stopped, he is unable to rewind the tape. Page 1 of 2 - HP 4L printer -- grinding noise after replacing toner cartridge - posted in External Hardware: I have a Hewlett Packard Laserjet 4L printer. 5 to 10 mm covers a wide range of gear grinding applications. A worn-out shim will make a contact with a piece of the braking system, such as the rotor. It's not just that reverse doesn't have a synchro. John, thank you, that's a really great update. This indicates a failure of the clutch assembly that prevents the engine from disengaging from the transmission when the car comes to a stop. Gear noise associated with tooth surface topography is a fundamental problem in many applications. Never had issues but recently drove up the mountains in TN/NC I switched to 4(A) (road ice) and drove about 290 miles on it. if you sit right between tranny and clutch you hear it clearly coming from the direction of the throw out. When I coast down a hill in third gear there is a noticeable grinding noise that occurs I believe from the front of the vehicle. It has just been in for its major service (100k) and nothing was picked up. Noise sounds like the noise you get if you travel outside the lines on the highway where they have those "wake up" indentations in the pavement. Gear Sounds. The slide will go out about 1 foot and then the gears start making a grinding noise. PartsNow Marketing 60,106 views. When shifting up your gears are in an aligned position which makes it easier then when just sitting in neutral. Trouble Shooting/Problems/Service. i need help with finding a problem in my car. It makes the sound when I first turn it on, when it is preparing to print or copy, but not while printing or copying. It will not go forward or reverse. Hi feldmann, Did you read my entire reply to your question on grinding noise and a fix? I never said anything about replacing the solenoid. The diamond grains on the dressing wheel causes undulations on the grinding wheel surface and when grinding the gear, also the gear flank surface will have undulations (waviness). it only happens to 2nd gear. It does it in reverse to but only when you put it in gear. Grinding sound should match to material shaft is connected to, but if it's unknown just use some metal grinding sound. I have a Whirlpool Cabrio washer M# 5640XW2 that a year old, we noticed last week that it started making a loud grinding noise when it starts the spin cycle. Download and buy high quality Gear Grinding sound effects. So, I thought i did grind my gears so I tried switching back into 2nd and it did the same loud awful grinding metal on metal noise. It's really bad for your reverse gear to do that. I have a 2010 Dodge Challenger SE with the 5 speed Auto transmission. 59 Gear Finishing by Shaving, Rolling and Honing, Part II (May/June 1992). But when it happens, it happens, and knowing how to take care of a car starter that makes grinding noise can go a long way toward saving you money. Any suggestions what this could be? I know I have enough gear oil in the transfer case and engine oil is fine. Low grinding sound, (sounds like aluminum cans grinding), after making. (just 1 month past one year)soo dealer don't back me up. The car seems to run fine when I accelerate, but when I let off the gas this strange grinding noise happens as the car begins to decelerate. My Toy Story Collection talking mr potato won't move his legs like it's supposed to and is making a grinding sound how to fix it - Mr. Will it make the noise slightly when the vehicle sitting still and you place it in drive and keep your foot on the brake pedal and slightly push the accelerator pedal (this is called power braking) See if you can hear it even just faintly this way we can tell if it is a heat shield vibrating (can also make a grinding type noise) or if the problem is in the transmission final drive,(like bad. when grinding sound starts you have the shut it off and then put it into park,which does not lock tranny in placeyou can push it and it will move. The catch is that it only makes the sound intermittently, usually doesn't do anything after I've been driving for 15-20 minutes, and stops when I brake. Just as Toxic states, if there is rotation of the clutches at idle it will cause grinding when going into any gear. Gears transmit power. All reverse gears make sort of a meshing/grinding sound. Still making quite a racket in 4 wheel drive. So, I thought i did grind my gears so I tried switching back into 2nd and it did the same loud awful grinding metal on metal noise. In the gearbox, for the next gear to engage, the input and output shafts must turn at the same speed. the noise is at start up, when the toner lid is closed, and when printing from tray 2. First I thought it was coming from the driveshaft or the front/rear diff, but wasn't sure. If the noise returns on one specific option, a roller or gear on that option may be the cause of the noise. after a couple of days, it started making loud thumping, and extremely loud gear grinding noises when it starts - 2675411 - 3. I looked at tractor data and lgt2254 shows it has a Tuftorq hydrostatic transaxle, please explain more about grinding gears, if it is a hydrostatic you have no gears to grind. If I press the accelerator pedal even a little at any point, the noise immediately goes away. The 4x4 noise happens only when you put a little torque on the front wheels like you are going through mud or up hill. The method includes grinding the gear with a grinding wheel during a grinding operation. 59 Gear Finishing by Shaving, Rolling and Honing, Part II (May/June 1992). on dry weather, there is absolutely no such sound no matter how i whack the car. It almost sounds like a tyre is rubbing against something, thought I am very certain this is not the case (new suspension, tie rod ends and recent wheel alignment). If you notice that the grinding sound appears to be getting louder, I suggest contacting either the manufacturer or your local authorized technician for further assistance. I have also noticed several posts from others on the forum talking about a noise like rattling or grinding or like a piece of tin that is loose or rattling catalytic converter coming from the front end. Technologically speaking, the RZ 410 is identical to the larger grinding machines, the RZ 550 and RZ 1000, which, in the main, differentiate themselves in their grinding diameter ranges. No noise in neutral or park. Another reason responsible for the grinding noise when braking is broken shims. Download Gear Reducer Catalog. I have a wierd rubbing/grinding noise coming from the passenger side of my car. It still does it with the blade on, but you don't notice it as much. Thanks, Mr. ---Engaging gears quickly does the least amount of damage !!. Recently I had my Peugeot 206 LX gear box mounts replaced and the gear oil was changed as part of the work. Also, when I'm going in reverse, there's no noise except if I turn the wheels sharply, like when parking. Kinda sounds like little plastic gears grinding together. 3 (September 2012) 26 |3. When I got it back, it made a grinding noise with the clutch disenganged, so I took it back. when grinding sound starts you have the shut it off and then put it into park,which does not lock tranny in placeyou can push it and it will move. Get shopping advice from experts, friends and the community! I have a 42 inch cut lawn tractor; model number 917-272352; The drive axle is making a grinding sound. transmission will make a loud grinding noise and will not engage in any gear, even park. So anytime you get a brake job done, you must replace the shims. With gear whine, that source is TE; reduce the TE and the noise is reduced proportionally. in 5th gear, and only 5th, there are, what i can only assume, are grinding sounds. The closest thing I have to engine mods are my TWM short shifter, and my borla axle back exhaust. no vibration or loss of power during acceleration with noise presant. to get past the grinding noise you have to push forward even further on the throttle. When I first got the car it had some shifting issues, it was really hard to get into gear. I think this is great because you must now shift while actually paying attention to the RPMs (it doesn't prevent from going in gear but the sound of grinding gears is something you want to avoid. Gear noise associated with tooth surface topography is a fundamental problem in many applications. Bad grinding noise when operating in 4WD High Range. Grinding or "Impact wrench" sound that gets louder with engine load - Transfer case output shaft snap ring broken allows shaft assembly to move backward and grind into the case. I have a Maytag Bravos HE top load washing machine (MVWX500XW1) that makes a grinding noise during the wash cycle. I removed the motor and couldn't find anything wrong. Hi all, I have a 2010 Corolla S, automatic with 68,000 miles. I Have a 2002 Honda Civic and whenever i drive the car a aweful grinding noise occurs wheneven i turn corners, shift gears, even decelerate. gear grinding noise I have a customer that says the machine is making a gear grinding noise. over and over so I exchanged the printer. A little background:. When I get into certain gears my chain or drive train makes a noise that I can only to compare to the noise a rollercoaster makes when it starts going up the first hill. Visitors to the Forest City Gear booth often arrive armed with drawings and looking for solutions to some of their toughest applications challenges. When metal rubs against metal, it quickly damages the disk brake rotors. About a year ago, I started hearing a growling/grinding noise in the front when the wheels were turning. The box is a 5 speed i believe. I had the car towed to my house and I took this video where I can see that if I accelerate while in park there Is no unusual noise but as soon as I put it into gear the loud grinding noise kicks in. If you have the reduction setting on top, black lever that you can set to 1,2 or three? If so, that is your problem. It is not the throw out bearing, some sort of gear/bearing. A grinding noise and slow computer probably indicate the worse. So I'm stumped, I bought my truck about 6 months ago. When shifting into reverse, the 5th/reverse shift piece, connected to the shift lever, rotates the cam plate. which may be helpful on occasion if. Another reason responsible for the grinding noise when braking is broken shims. nv4500 grinding My transmission also grinds but it is going to 3rd have to shift in to it at 20 mph. The diamond grains on the dressing wheel causes undulations on the grinding wheel surface and when grinding the gear, also the gear flank surface will have undulations (waviness). The cause of the noise is the from the limited slip plates chattering against each other. This process of gear finishing is becoming obsolete these days, as the shaving process is quite satisfactory and cheaper than gear-grinding. I have personally observed expert mechanics diagnosing car problems, by merely listening to the murmurs of the engine settling into idling condition or humming into first, second, and third gears. Worn Clutch: If you have a manual transmission, it’s possible that the clutch is worn out. We have a Whirlpool top-loader (model number: LSQ9544KT0) that developed a pulsating screeching sound during the spin cycle about two days ago. This problem has been exacerbated due to the continual reduction in sounds from other system noise exciters such as motors, engines, and wind. Lately I've been noticing a grinding/resisting force and sound when I shift from first to second gear in my 2003 Jetta GLI. ” In this episode, James shares his journey as an engineer, why it’s actually more expensive to do work overseas, and how to avoid frustration as an up and coming engineer. Canon printer start up sounds almost like gears grinding on one another! Turned out that round shiny rail that the printhead assembly moves back and forth across the paper was dirty (and. Over the past several months, I've noticed a grinding sound immediately after cold-starting the engine. My Toy Story Collection talking mr potato won't move his legs like it's supposed to and is making a grinding sound how to fix it - Mr. First, the lightened flywheel has less mass to damp the power pulse variations. It seems to be some kind of paper gear that is grinding behind the toner/ drum cartridge. The problem can be caused by a carriage stall or a paper jam. (double clutch) quickly and if that solves the problem the synchro rings or blocker rings are worn as well as bearings are probably worn out. If the gears do not slot easily and instead make a grinding sound on quick shifting between one gear and another, you may have a larger problem on your hands. Only when I put it in Reverse or Drive. Home / Power Tools / Diamond Grinding Wheels. Any ideas?. What is Safety ? It is a condition which gives you freedom from hazard, risk, accident which may cause injury, damage and loss to material or property damage and even death. Use smaller gears. The collar that holds the blade is also an awesome feature. t a old leg neither. In addition, the 2nd time this occurred I also experienced a sharp metal on metal grinding noise. as if noise were coming off the flywheel. Fj cruiser engine ticking noise. I have a Maytag Bravos HE top load washing machine (MVWX500XW1) that makes a grinding noise during the wash cycle. I could see no obvious problem with the gears. Grinding noise while shifting Inspection Service The choice between a manual and automatic transmission by a car owner comes down to issues of convenience, fuel economy, and cost. It only happens while the car is in gear. A grinding noise is most frequently associated with problems with brakes,. Grinding/Scraping noise after new clutch and flywheel I had an Exedy Stage 1 (organic) and Exedy lightweight flywheel installed on my 03 WRX at the dealer today. He said that the throw-out bearing that came in the kit was not as "tall" as the one he took out, so he put the original back in as it "felt fine". but if i change gears slowly it doesnt make that noise. I will try to listen out harder to where the noise is coming from. Play metal clangs in a sequence and adjust the gap between each clang according to gear rotation speed. It moves fine within that range, but I can't get it to move any more. Is the noise grinding like metal on metal?. More like plastic rubbing against plastic. 4X-image Getty Images. Replied by wysetech on topic Manual 5 speed grinding noise while shifting Try stopping between gears in neutral, release the clutch, push clutch down and then shift to the next gear. Just as Toxic states, if there is rotation of the clutches at idle it will cause grinding when going into any gear. When the material on the pad wears through, the metal plate that backs the pad rests against the rotor and makes the noise. The sound is def. Things were fine for a week but then when changing up to 2nd gear when cold I get a grinding noise. Here's how it affects you and how to stop. PartsNow Marketing 60,106 views. Can this gear be replaced?. know more about strategic gears. A vehicle may also produce a grinding sound if the clutch has gone bad or if the gear synchronizers have worn out. This happens with the OD engaged or disengaged. It's at a transmission shop now. Xerox grinding noise. Best Answer: The bike has a front and a rear derailleur that pushes the chain over the gear sprockets when you shift. Close examination of all gears visible when copier is open reveals no visible wear or rubbing on gears or adjacent parts. our team, our gears.