Loose pinion bearing preload. Some parts stores have these for rental.

Loose pinion bearing preload. 25-456) Ring & Pinion Gear Set for Chrysler 8.
Apr 25, 2013 · 1999 to 2016 Super Duty - Pinion Preload Sterling 10. This is usually diagnosed as a bad ring and pinion gear. May 13, 2012 · Bottom line is you need 15 to 20 lb/in drag in the pinion bearings regardless of if you use a crush sleeve or custom shimming between the bearings. 250 degrees should suffice. 010 increments? Maybe you meant . Jun 10, 2022 · At roughly 150k miles, rear dif started growling. 56 N·m (5 in. The shims under the inner pinion race are what affect the Aug 15, 2018 · If the bearings are OK did the pinion nut back off before or after the bearings broke in? If before, then you have to set pinion bearing preload to one in/lb spec but if it backed off after they were broken in then you have to set pinion preload at a different in/lb spec. May 3, 2017 · Use a small pinion bearing that has been honed out to "slip" onto the pinion , carefully add/subtract shims from the eliminator kit untill you obtain correct bearing preload with the retaining nut tight , then install a new small bearing / seal and yoke lock tite and tighten the nut to 210 or so ft pounds ( it is now not part of the "adjustment" it just has to hold and stay put) eliminator kit Mar 29, 2023 · Pinion preload refers to the amount of force or tension applied to the pinion bearings in the differential, and setting it correctly is crucial to reduce gear noise, wear, and overheating. Then, to tighten the bearing against the races and increase pinion bearing preload, simply remove the shims. With increased or excessive preload, stresses are higher and excess heat is generated. 73) = 18. When I removed the carrier bearings there were shims under the bearings. I always set pinion preload by "feel", Im doing an 8. Put your new big bearing in the oven, your pinion gear in the freezer. Nov 21, 2011 · When you tighten the pinion nut to about 200 ft lbs, if there is no crush sleeve or spacer between the bearings, it will definitely preload the pinion bearings, way way more than the 20 inch pounds you want. New bearings require 25 inch pounds of torque for proper rotation. Mar 25, 2006 · Ive installed many sets of gears in my lifetime, but this time I decided to do it the right way. by a method called pinion total torque to rotate. Just replace the bearings and there is no guessing. Anything else is too tight or too loose. Once they've heated and cooled a while you can literally drop the bearing onto the pinion. 1 Y 25–45 lb in Oct 28, 2013 · Then I changed the pinion oil seal and used the same crush sleeve and pinion nut and got to 4. Feb 17, 2022 · This will either increase or decrease the pinion bearing preload on the gear, as you want it to be. Well, there’s a collapsible spacer between the premises of the pinion bearing, which is Bearing Preload is an axial or thrust load applied to a bearing that removes excess play. 73:1 gears, and yukon rebuild kit with all new timken bearings, shims, and seals. Used – (Inch Lbs) Backlash (. NOTE: The inner nut has a pin or post protruding on one side. Jun 24, 2016 · Fine spline pinion 4. Dec 16, 2017 · I am perplexed with my pinion nut preload. Ford manual sayd 8-14 inch pounds for REUSED bearings and 16-29 for NEW bearings. The pinion nut was tight before removal, backlash was . New Collpsb spacers is 1. carid. You never know just exactly how much preload to put on old bearings. 8 now and I decided to buy a good inch pound torque wrench. Then after the carrier is in place and shimmed the preload will increase maybe 5-8 in/lb higher. Let’s have a look at each of these symptoms. It takes a lot of force. If the ratchet swings past the 90* 'straight down' position (and it will usually swing past, then settle back to the straight down position) the preload is to loose. 06 QCSB 4x4, EFI Live, SB dual disk, ED 100hp injectors, ARP 425s, Hamilton 103#,push rods, Fleece lift pump, ED 10mm cp3, 63/67 under BW475/96/1. Feb 1, 2013 · Bearing noise is constant. amazon. 008, and wear pattern looked good I reinspected the front bearing and found wear marks on the cage. 6 to 8 in-lbs. Tightening up the pinion nut clamps all three items together (inner bearing, spacer, outer bearing). lbs. 8 N·m (5 ft. Cleaned everything extremely well and installed all new dif bearings. Slip the crush sleeve onto the pinion and insert it into the Mar 16, 2009 · As soon as you apply any preload some torque is needed to rotate the bearing. While tightening the pinion nut, the crush sleeve compresses to allow the bearings to preload slightly. The pinion bearing was failing. I’ve got my backlash between . Stick that on there and then use your feet to A: Some signs of a bad pinion bearing preload include excessive noise from the rear end, vibration during acceleration or deceleration, and gear failure. ) Check the torque measurements with an inch-pound torque wrench before adjusting. 12. ) At any speed, a “whirring” noise is most often produced by a faulty pinion bearing or loose preload. It’s a combination of two gears mashed together. This is rotating torque not start up torque. Mar 11, 2011 · 7. There’s no side to side play on the carrier and I had to lightly hammer the Jun 18, 2017 · From extensively researching this topic it looks like a whine when decelerating is caused by a pinion preload that is too loose. Mar 21, 2014 · In this case, the gears typically aren’t the problem at all. com/yukon-gear-axle/A pinion bearing is a mechanical element that constrains the movement of a pinion, a gear wit Never WORRY about how to deal with pinion bearings ever again! REMOVAL and INSTALLS with SEVERAL METHODS depending on the TOOLS YOU HAVE AT HOME! Pinion bear Dec 14, 2013 · When measuring pinion bearing preload, you want to turn the torque wrench slow. Tightening that nut on a worn bearing is only going to accelerate its demise. Step:5 Lubricate Pinion Yoke Washer Pinion Bearing Preload. What is the correct procedure for adequate carrier bearing preload. I replaced the entire axle assembly on my 2001 250 SD 4X4. Turning the pinion gear nut crushes the spacer to obtain the specified preload. Apr 22, 2015 · Install a new collapsible spacer and start the pinion bearing adjustment all over again…The safest way to collapse the spacer is to make all adjustments before you install the spacer, then install a new collapsible spacer and tighten the pinion nut in very slight increments. Before setting the final pinion bearing preload, install the pinion seal, slinger (if applicable), and crush sleeve (if applicable) compensated for with preload. This article will provide an overview of bearing preloading in common radial and angular contact ball bearing applications. 1 N m 25-45 lb in May 5, 2021 · one video said that you set pinion preload without the carrier in place and you want about 20 in/lb of force to keep the pinion moving (not starting rotation). It is best to tighten the nut slowly and in small increments, such as ½ or ¼ turn maximum. 25-456) Ring & Pinion Gear Set for Chrysler 8. Step:4 Install Outer Pinion Bearing. The crush sleeve is cylindrical bushing that sits just in front of the thrust bearing of the pinion gear. By preloading bearings it is possible to reduce the noise in, for example, small electric motors or similar applications. If the preload is too loose then remove shims so that the bearings will be tighter against the races and increase the preload. Regearing with new Eaton Elocker. May 17, 2024 · What is Bearing Preload? Bearing preload is a force acting between the rolling elements and bearing rings. This increases both the carrier bearing preload and the backlash at the same time. A lubricated washer reduces friction and prevents the nut and washer from galling during tightening procedures. Yeah um, no th Dec 26, 2019 · Regearing Chrysler 8. 32 Pusher Jun 11, 2019 · Deep groove ball bearing preloaded by nut against shaft shoulder; Source: IEEE GlobalSpec Many types of rolling element bearings require some form of preload for proper operation, including angular contact ball bearings, tapered roller bearings and cylindrical roller bearings. If the crush washer is not replaced as part of the nut removal process, proper bearing preload MAY BE REACHED before the nut is adequately tight. Worn pinion bearings – Listen for whirring noises when driving at various speeds. Jun 15, 2017 · Either way, the new bearings must have some preload on them, which I believe is around 20 inch pounds of rotational force. Just about every rear end that I have disassembled had about 2 inch pounds Whirring noise only while decelerating at any or all speeds is most likely caused by bad pinion bearings or loose pinion bearing preload, and almost never by bad ring and pinion gears. “Preload selection also varies based on bearing type. Then after removing it and replacing the seal and resealing the splines to the yoke with rtv tighten the nut back to the position it was removed PLUS 1/16 of a turn. Broken pinion-gear tooth – Listen for loud clicking or clunking sounds when driving. Install the carrier, set bearing preload and backlash to what it was, good to go. 1 N m 25-45 lb in Oct 2, 2023 · Whirring Noise: If you hear whirring noises while decelerating, accelerating, or driving your car at any constant speeds, the main culprit behind the noise could be loose pinion bearing preload or faulty pinion bearings. Back the inner bearing nut off 90 degrees. 3. The red curve represents bearing B, which becomes unloaded by the axial force. Apr 25, 2012 · When I went to set preload on the pinion bearings, I used the original 0. 9. Bearing life decreases as preload is increased. Rumbling or whining: Whirring or rumbling sounds at speeds greater than 20 mph is probably caused by worn carrier bearings May 31, 2020 · Note on a "typical" D44 pinion bearing preload is 14-19 on new bearings and 6-9 for used. Also, you should use a new nut. clean the yoke splines really good and put a See full list on rxmechanic. If the crush sleeve is not crushed properly, the pinion yoke will be loose and the pinion bearings will not be seated correctly. I use a crowbar to get the pinion seal out. It should measure around 20-35 inch pounds. for the pinion seal replacement procedure i think Ford says to just torque the pinion nut to 120ftlbs. 6. 8" Rear End" on setting pinion bearing preload. With a crush sleeve, pinion nut torque doesn't mean anything if you have slack or binding in the pinion bearings. Sep 22, 2012 · Failing to properly follow the pre-load procedure can result in pinion bearings, and a ring and pinion that fail inside a few hundred miles. If you were changing out the seal on a GM differential, this is what you'd need to do: Apr 6, 2016 · I'm installing a new gear set in my 12 bolt and am using a pinion spacer instead of a crush sleeve. What is the used bearing preload value? Mar 21, 2016 · How much preload should be applied? Wallace notes that in general, provided the design requirements are met, the least amount of preload is desired. The side bearing preload is the difference of preloads (5) x the gear ratio (3. Mar 29, 2023 · Pinion Bearing Preload Tool . 25 Differential https://youtu. If the original recorded preload is less than specification, tighten to specification. but when I tightened it up, the crush sleeve snuck up on me quick and hit 29 in. if all looks good re-install the pinion and new seal, use a little assembly lube on the bearings. Pinion bearing preload is shim adjusted, not crush sleeve style. You can do this with a few simple tools. New bearings 3. the problem was that the pinion yoke was the round style and I have the ujoint / strap style so I had to change the yoke. Deep groove ball bearings can be preloaded, but it is not required Oct 2, 2011 · The reason the preload measurement is so important is the crush sleeve. So in doing this, I only have the test bearings on the pinion right now and no crush sleeve and am setting the preload. I used an 18" breaker bar with a 2 foot pipe on the end of it in order to turn that pinion nut. When you apply torque to crush the spacer this applies the preload to the bearings Nov 5, 2005 · Total preload (in/lbs. 10 in-lbs (using old bearings) without seal or carrier installed and using 125 ft-lbs of torque on the pinion nut (since I'm using the solid spacer and shims, and this is what they call out for pinion nut torque. Jul 20, 2014 · When simply changing the pinion bearings, don't need to resetup the gears. The pinion seal was an OEM leather seal. Jul 14, 2017 · This will work for the YJ Wrangler front Dana 30 since you're relying on shims for both pinion depth and bearing preload (not a crush sleeve for the preload like the Dana 35 rear axle). Make sure to check out the bearing preload after every little change of it. Extended bearing service life Provided the preload is properly set in an adjusted bearing arrangement, the opera-tional reliability can be enhanced, because of a more favourable load distribution in the bearings, which can extend bearing service life. Apr 5, 2013 · 13) If the inner pinion bearing is worn out then you need to change the inner pinion race too. In this example, the bearing arrangement comprises a preloaded single row deep groove ball bearing at each end of the shaft . 5 is off hand). You torque the nut to specs, if the preload is wrong, you need to add/remove shims as needed from the outer pinion bearing. Too much bearing preload will quickly overheat and c Jun 12, 2016 · Be prepared for a full on diff rebuild with new gear set and bearings. A carrier break is the point where the numeric increase in gear ratio necessitates a new/different carrier be used. Foot/Lbs Bearing Cap Torque. If it gets worse again, I'm debating whether to just swap the whole assembly to the Ford Racing 3. Sometimes the Pinion Bearing Preload. May 19, 2019 · “Whirring noise only while decelerating at any or all speeds is most likely caused by bad pinion bearings or loose pinion bearing preload, and almost never by bad ring and pinion gears. When gears are set-up you have to tighten the pinion nut to crush the crush sleeve to obtain a certain inch pounds of resistance on the pinion bearings. Noise: Howl without whir or rumble while accelerating at any speed (gears previously quiet) Cause: Worn gear set due to lack of lubrication or overloading Sep 1, 2013 · okay i am putting together an 8. If you have a loose pinion bearing preload, the first thing you’ll need to do is remove the old crush sleeve and bearings. Check the ring backlash, remove the carrier, press out the pinion, replace the bearings and crush sleeve using the same shim(s), new seal, set the bearing preload. 73 setup, which I believe (but will verify) has the smaller pinion bearing of old. . My Mopar manual shows 20-40 inch pounds for preload. Install the new inner pinion bearing by pressing it on with a shop press. If you decide to just replace the crush sleeve; put the new one one and tighten the pinion nut to 210 foot pounds and check the pinion preload. with the unit totally assembled) minus the pinion bearing preload (with only the pinion assembly) multiplied by the gear ratio = side bearing preload. Take frequent pinion bearing torque preload readings until the original recorded preload reading is obtained. Install the new inner pinion bearing into the case and install the pinion seal. Too much preload and you risk damaging the bearings; too little preload and they’ll wear out prematurely. Aug 8, 2021 · 5. 42 gear. 8 before 2009. 1. Measure pinion torque to rotate (1) inch pound torque wrench (2). Feb 17, 2021 · A loose nut may make noise and not allow the pinion to work as it should, but an overly tight pinion nut will wear out the bearing prematurely. the car/pickup Oct 4, 2007 · The proper way to replace the seal without replacing the crush collar is to carefully mark the nuts position on the pinion threads before you remove it. 0T SS with 75,000 miles on it. ) increments until pinion torque to rotating is achieved. then reassemble the diff. Does this sound like a loose pinion bearing preload or something else? Aug 30, 2007 · yeah it's hard to tell the bearing preload with the diff assembled. Couple questions on preload. This increases the carrier bearing preload and tightens the backlash at the same time. Seemed high to me. Aug 30, 2013 · If the ratchet does not move, or only swings to about 40-45*, pinion preload is to tight. Test this in Apr 30, 2018 · I would suggest a new ring and pinion, install kit (includes new bearings) and a competent shop that will set pinion depth, back lash, preload and apply appropriate torque to all fasteners. There are many ways to apply preload, as well as many benefits and potential problems with preload. Used bearings generally require 15 inch pounds for proper pinion rotation using a inch pound torque wrench the finger torque wrench is the one i like. Remove the carrier and clean off the gear paste. Hi Bret, Just put new bearings and Aussie locker into son's BJ60 yesterday. Instead, it’s often a loose pinion yoke, bad U-joint, or worn transmission making the noise. “Clunk,” “click,” and “squeaking” noises may indicate a fractured gear tooth. If you’re a gearhead, then you know that preload is critical to maintaining proper function of your pinion bearings. Nov 1, 2019 · Set pinion bearing preload— Set the pinion bearing preload at the high end of the specifications. when I did mine I got a bearing kit and tore it down only to find the last guy in there really fubar'd the pinion threads and nut ( cross threaded it ) which is what lead to the failure anyway, pinion preload was not right and the bearings died as a result Jun 23, 2024 · Not enough preload and your pinion is too floppy, which causes wear on the gears of the differential, premature seal failure, and the differential is usually noisy during operation. sound way low, for that large of a diameter fastener. The pinion yoke is splined to the pinion shaft, so how does the pinion nut loosen itself? Whirring noise only while decelerating at any or all speeds is most likely caused by bad pinion bearings or loose pinion bearing preload, and almost never by bad ring and pinion gears. In this article, we will explore everything you need to know about GM 10 bolt pinion preload, including why it’s important, how to measure and set it Feb 26, 2017 · Rotate pinion occasionally to ensure proper bearing seating. It operates without any external load and acts as negative internal clearance within the bearing. If the pinion bearing preload exceeds the specified allowable range, install another new crush sleeve and start over! Pinion bearing preload is measured in inch-pounds and is a measure of the rolling resistance of the pinion bearings after proper torque has been applied to the pinion nut. Can you set pinion bearing preload without a torque wrench? A: Yes, you can set pinion bearing preload without a torque wrench by using a crush sleeve eliminator or a solid spacer. But if it's that loose, the bearings may be worn out or close. Example, Pinion preload (should be 25-35 inch pounds) is 30 inch pounds, total preload is 40 inch pounds, with a 3. What I don't understand is the difference in the big truck world vs. Nov 29, 2004 · Your description says you are changing by 0. That distance needs to be exact to keep the preload at the specified torque. It's basically a steel cylinder about 1" long. ). Yukon Gear & Axle at CARiD:http://www. A collapsible spacer is used to obtain the specified pressure or preload. Loose pinion-bearing preload. If pinion rotating torque is low. The desired preload is very small and measured in inch lbs. Mar 7, 2010 · Then subtract the pinion reload from the total preload measurement, multiply this by the gear ratio, This is the side bearing preload in inch pounds. ” Dec 30, 2009 · I have a slight whine in my new frpp 4. When I installed the gears I had a hard time getting an accurate preload. I guess this is because the preload distorts things a minuscule amount so it is somewhat analogous to pushing a wheel along soft ground; the balls or rollers are distorting the races. 8-5. Jul 12, 2019 · 160 ft lbs is the minimum pinion nut torque value to start at when setting pinion bearing preload so when your nut came loose last year it is reasonable to think that just retorquing the nut to 160 ft lbs, you may not have reached the correct preload. It developed a whine during decelerating and I always thought it was something to do with the transmission. In most cases, a faulty ring and pinion gear are blamed for this issue. As an Amazon Associate I earn from qualifying purchases Pinion Preload (New) Pinion Preload (Reused) Ring Gear Backlash Ring Gear Bolt Torque Carrier Bearing Cap Bolts ; AMC Model 20 / M20: 14 to 19 in-lbs. 7–3. Jan 8, 2023 · This is my existing front differential. after alot of May 20, 2020 · Pinion bearing preload - adding/removing shims until 8-10 in/lbs for used bearings or 17-30 in/lbs for new bearings (verify numbers) Carrier bearing preload - adding shims between carrier and bearing until carrier requires a little effort to "seat" Aug 20, 2018 · Worn carrier bearings. It was still hard to do. Mar 2, 2014 · I'm going to try to muffle the noise coming through the floor, and see if I can live with it. ” Is it possible the pinion needs to be tightened a little or is that just a pipe dream? The reared probably only has 2-3 thousand miles. Measured the end play of the now loose pinion with dial indicator Mar 30, 2012 · Cause: Loose pinion bearing preload. At that point, the "mechanic" may: 1. Pinion torque to rotate is recorded reading plus 0. That was 2 weeks ago. Mar 17, 2017 · When I lift my foot off the gas pedal at times I will hear a soft whirring noise. Setting the preload too h igh will A compressed video clip taken from BadShoe's "How To Repair the Ford 8. 11 in/lbs side bearing preload. Option 3: Using Zip ties. If the preload is higher than specification, tighten to original reading as recorded. I believe that I use 8"lbs with new bearings (I can check my Ford manual if you need an exact. 001 Inch) Ring Gear Bolt Torque. It is only during coast. Turns out the leaky seal was a symptom, and replacing it was just a band aid. I had to tighten it back up, but it eventually loosened again. 5 threads exposed and 20 inch pounds of preload. This is IF and only IF nothing is worn badly or needs adjustment. 8–5. The tightening of the pinion nut should be done on the bench. I drove with a loose preload for almost 2 years putting about 10,000 miles on my truck over that time. Over the years I have found that many mechanics & workshops in general tend to shy away from rebuilding final drives or differential units due to the complex Jun 9, 2024 · The symptoms of too much pinion preload are abnormal vibrations, premature gear wear, higher stress on components, and reduced efficiency. Loose pinion-bearing preload – Listen for a high-pitched howling noise as you decelerate gears. Funnily enough, the third way to set the pinion bearing preload of a pinion bearing is to use zip ties. 10 gearset after install. Bad wheel bearings – Listen for rumbling sounds as you turn. turn it back and forth and feel how much slop is present. Too much force will collapse the crush sleeve and apply too much pressure to the pinion bearings (blue) against the pinion race (yellow), resulting in too much pinion pre-load. When running 17-18 in lbs on new bearings it will be around 9-10 once they break in (7-10 in lbs for used bearings is good) Miles inch-pound torque wrench to check the preload. May 28, 2008 · Tighten the pinion nut to approximately 250 foot pounds. but thats if it was setup properly in the first place Apr 29, 2020 · A “whirring” noise: A whirring noise while decelerating at different speeds can be caused by the pinion bearings being bad, or a loose pinion bearing preload. High mileage car but with little/no off road use. Because the drag of the carrier bearings will effect how the pinion bearing preload “feels. The specs call for 14 to 19 inch/lbs with new bearings. Aug 9, 2016 · I checked bearings, no measureable difference from old to New bearings. The OP says his noise disappears after about five minutes, I suspect his rear end is low on gear oil. OP, check your fluid level, the bearings are lubricated with movement of the gear set. You may be wondering what does pinion bearing preload means. I think I tightened it to 250 ft-lb per the specs. When I reassembled it I set the preload on the pinion using a crush sleeve to approx 25-30 inch pounds, At time it seemed plenty tight. Oct 23, 2014 · This rear was bought locally so running condition is unknown. The simplest method of applying preload is to use a wave spring. I have replaced only the inner and outer pinion bearings using a new baffle, bearings and races and a new pinion seal. Hold pinion flange with Spanner Wrench 6958 and tighten pinion nut in 6. The only way to accomplish this is with the carrier out of the housing. It is easier for me to set the preload on new bearings than old bearings. Check out Alf's Mustang Parts on Amazon www. Total side bearing should be 15-35 inch pounds. so it don't take much. To maintain proper contact, the thickness of the ring gear must be increased. When doing a gear install, you put a new crush sleeve in, and tighten the pinion nut to 250 ft-lbs. I installed the original yoke from my truck, used the Following the procedure detailed in Chapter 6, install the pinion with the gear and bearing assembled and loaded into the housing. 008” on 4 places on the ring gear. i think ford says 14 inlbs. 2 Y 30–55 lb in Pinion and Differential Case Bearing Preload, Used Bearings 2. is it possible to take the pinion shaft out and replace the bearing and spacer without taking the axles Feb 25, 2011 · The pinion preload was way too loose <4 in. This is done by using the smaller shims on the step side of the pinion shaft. Foot/Lbs Samurai: 12-15: 5-6: Oct 26, 2008 · Once the pinion nut has loosened and been retightened you don't know how much preload is on the pinion bearings. 73 = 26. 4 N m 15-30 lb in Pinion bearing preload. Noise: Howl with whir or rumble while accelerating at any speed (gears previously quiet) Cause: Worn rear pinion bearing or worn gear set. Some parts stores have these for rental. Are you getting a noise on "coast" or when you downshift and engine brake? Mar 3, 2021 · this was made for Joe. 2. Jan 9, 2019 · Depends on the type of rear 741 or 742 case just remove the pinion yoke hammer and chisel the seal out reinstall new seal and your done. The two bearings are each preloaded by an axial displacement δ 0 of one bearing ring relative to the other, resulting in a preload force F 0 acting on both bearings Aug 3, 2014 · It's time to take it all apart one last time. after the preload is set 20 to 25 inch lbs turning with new bearings NO PINION SEAL and pinion torque to 200 ft lbs . 4 Y 15–30 lb in Pinion Bearing Preload, Used Bearings 1. Aug 31, 2022 · Pinion preload is critical to the function and durability of any gearbox, differential, or transaxle. com May 27, 2008 · Also once the bearings break in if there is not enough preload you can get gear noise when floating the throttle since you may have some slight pinion movement which is not good. The shorter the spacer, the more the bearings are pushed together and so the higher the preload. So apparently after replacing my rear diff pinion seal, I incorrectly torqued the bearing preload nut. Flat surface, in neutral, ck for any lateral play in pinion. 489 case has a crush sleeve for bearing preload and should not be done that way. You then tighten the pinion nut until the play is just gone in the pinion bearings when feeling by hand, as in you can't wiggle the pinion inside the housing Jan 2, 2019 · Pinion bearing preload. If your car makes a rumbling or whirring noise when traveling faster than 20 mph, worn carrier bearings could be the culprit. IT's within spec for new bearings, but they weren't "out of the box" new so I fear they may be a bit on the tight side. Jun 22, 2019 · hi there, so the pinion shaft nut has come loose twice now, the first time i didnt know about preload and just tightened the nut and then it came loose again so havent wanted to drive it. Carrier preload. The torque required when using a crush sleeve is about 600 ft. It gets behind the shoulder on the pinion Nov 24, 2013 · 1. This extreme torque deforms the crush sleeve. Too little pinion preload will allow the gears to “slop” around, which will also cause increased wear and premature failure. The pinion preload is measured in inch lbs. 001" increments. You can't guess. I used the same 1. It has a ford racing performance carbon fiber trac lock differential, motive performance 3. Jul 25, 2012 · Ok step ! is you set the bearing preload for the pinion bearing . !!! once you have the correct bearing preload install the seal and retorque the pinion to spec with red loctite small pinion 200 ft lbs Sep 28, 2018 · I have brand new bearings for the final install. Pinion preload gets measured with no load of any kind on the pinion. How to fix a loose pinion bearing preload? You can follow the procedure below to fix a loose pinion bearing preload: 1. Joe I think is a avid offroader who lost a bearing off road because he thinks he crushed his (CC) crush collar more. Supposed to be much less on the "barnicle" bearings of the new axles. 2 N m 30-55 lb in Pinion and Differential Case Bearing preload Used bearings 2. Apr 17, 2014 · Besides the loose pinion nut and leak at the seal everything was fine before, and the bearings look great, so I put it all back together with 3 shims at 5 inch pounds of preload, 125 ft lb on the pinion nut. Jun 2, 2009 · Caution, ultimately it is not the 160lb torque that is important, it is the proper bearing preload. Jul 6, 2009 · You might be able to get away with what Dodgeboys posted, the front pinion bearing is a press fit onto the pinion stem but it might come off. inch-pound torque wrench to check the preload. Go slowly so as not to damage the bearing if the preload shim stack is not thick enough. A mechanic told me it is my pinion bearing preload is too loose. The terms input shaft and worm shaft indicate the same part, just different names. To get this race out you will have to remove the pinion seal. 4–6. 8. There definitely appears to be too much backlash. The blue curve represents bearing A, which is subjected to an external axial force K a. Too much Apr 3, 2005 · The pinion nut really doesn't tighten the preload, it only tightens down on the shims that, in reality, limit the preload you can apply by tightening down the nut. I don't know any way to remove the pinion seal without tearing it up. Overall, you have one of two choices: 1) invest in an expensive bearing cap arbor pinion depth kit from Miller/OTC to establish the baseline pinion depth or 2 Oct 27, 2020 · Educational video with the sounds and noises a defective differential pinion bearing will make. 1-2. I suspect you now have some bad pinion bearings and maybe a a bad ring & pinion to boot. F Oct 17, 2022 · If the preload is close and the backlash is loose, add shims to the left side. 65. 3- 1. be/xi-2YYgI35cYukon Gear & Axle (YG C8. 006” and . Using a old pinion nut, and tightening to 125 foot lbs. Mar 6, 2007 · In setting up my 8. This spacer is placed between the bearings. is what it should take to turn the pinion for the proper preload. Jul 3, 2015 · Next remove the seal since your there you should put a new one in anyways and you need to inspect the pinion bearings for damage. The bearingkit is said to be for all 8. Another symptom is high stress on your pinions and the bearings, as well as strange noises coming from the engine. 30 mm pinion shim that came with it. On the loose side, I'm getting around 16 Inch pounds, measured with a Snap-On 0-30 inch pound Jul 11, 2019 · Use old pinion nut to set preload using new solid spacer and shims (might take a few tries) getting preload to approx. 4-6. I have a 2008 9-3 2. 14) The outer pinion bearing will fall out when you pull the pinion seal. The noise you hear is all differential. Does anyone know if the Boss 302s had the larger pinion bearing? Not enough force from the pinion nut and the crush sleeve holds the pinion bearings too far away from the pinion race resulting in not enough pinion pre-load. 875 pinion preload, I'm getting two different mesurments. Mar 26, 2020 · You tighten the nut enough to crush the sleeve and put some preload on the pinion bearings. This type of noise is normally diagnosed as Pinion gear and bad ring. My question is how can I set the preload in the car with the exhaust pipes surrounding the pinion nut? Oct 31, 2003 · pinion preload. You will need a split bearing puller to remove the pinion bearing. There are two methods of setting bearing preload: Method one uses a crush sleeve and a non-reusable pinion nut. New bearings 1. Aug 6, 2024 · The pinion is a large gear that almost everyone has seen in many commercials and repair videos but never exactly noticed what it’s called. The Importance of Bearing Preload. Please Note, correct pinion preload can Jul 27, 2022 · How Do You Fix a Loose Pinion Bearing Preload? Remove the shims if you are having problems with loose pinion bearing preload. In some cases, this noise may change in pitch when the vehicle is navigating a turn. Aug 17, 2015 · Cause: Loose pinion bearing preload Noise: Howl with whir or rumble while accelerating at any speed (gears previously quiet) Cause: Worn rear pinion bearing or worn gear set Noise: Howl without whir or rumble while accelerating at any speed (gears previously quiet) Cause: Worn gear set due to lack of lubrication or overloading May 4, 2008 · Yes, you can tighten the pinion nut and increase preload, and no you cannot accurately check preload with the carrier/ring gear/pinion seal in place. The carrier uses shims (Very large washer looking pieces) ourboard of the bearings and are loose once the carrier is pulled out. Oct 29, 2014 · So I had the same issue, slow leak out of the pinion seal on the rear end. With the pinion assembly held in a vice or something. 7-3. The closest that I can get with the shims provided is 24 in/lbs. 1–2. I am in the process of buttoning the front Dana 30 on my Cj7 up. Before applying my red loctite I did a test fit of everything. This normal? Update on pinion preload/ nut torque: Approx 3. send me a pm with your email. No braking until the end at all. 3 Y 10–20 lb in Pinion and Differential Case Bearing Preload, New Bearings 3. On my Super60 front on my SuperDuty pinion bearing preload torque can be 5 in lb on used bearings. Measurethe pinion bearing preload and nut torque as you go. If the preload is close and the backlash is too tight, add shims to the right side. Should I set preload turning torque to the used bearing specification with my test bearings, then just go for the new bearings with the same shim stack, I hope that it will still be correct with the new bearings, so that hopefully they too will also test correct preload turning torque? Yes Feb 17, 2001 · Next, set the pinion preload. If the pinion nut had been left loose when you picked up the car you would have noticed it right away. Jan 2, 2019 · Pinion bearing preload. 5 - Hi All, First time here. That’s why having a good quality pinion bearing preload tool is essential. if the nut came loose there is a 25% chance the bearings are beat up. Dec 11, 2015 · New seal AND new pinion bearings, properly set up (preload and/or crush washer) are likely what you need. This provides the way of adjusting the preload to the correct value. 10k miles later. Rear pinion bearing was shot. com/shops/mustangalfThings I used in this video. Anyhow, when checking your gear pattern, you need to be sure to preload the ring gear while turning the pinion in both directions so you get a good pattern on both the drive and coast sides of the ring gear teeth. Come up Proper pinion bearing preload is achieved when the torque required to rotate the pinion is 5-15 in/lbs for used bearings or 25-35 in/lbs for new bearings. Then I remove some smallest shim and reinstall the pinion with the shims, outer bearing and start torquing and measuring the preload with this preload wrench. I have seen people say start with the factory shims and go from there. Wolves and dogs aren’t the only things that howl. But the difference between the usual zip Jun 2, 2011 · then install the seal and a new crush sleeve and redo the pinion bearing preload back to the 20-30in/lbs (I think thats what the 10. I took the truck back to my May 27, 2020 · I believe I’m getting close to finishing my Dana 44. It works in conjunction with a conventional puller. Aug 26, 2009 · This establishes the correct PINION BEARING PRELOAD, by causing the nut to be VERY TIGHT, as it compresses the SLEEVE (called a "crush washer"). A howl or whine during acceleration over a small or large speed range is usually caused by worn ring and pinion gears or improper gear set up. 8mm deeper than the old one. Possible Cause #2: A second possible cause is the crush sleeve. i have the ford procedure if you need it. Install the inner bearing nut and torque the nut to 35 ft-lb (Dana 28 and 35) or 50 ft-lb (all others) while rotating the front disc brake hub back and forth to seat the bearing. May 4, 2012 · Yes no ring gear. Yes, 125ft. If your total preload is 32 in/lbs - pinion preload of 25 in/lbs = 7 in/lbs x ratio of 3. 3 N m Pinion and Differential Case preload. 479" Ford solid spacer that came in the differential to start and got a reading of about 38-40 inch-pounds of preload (too much) with the seal installed, oiled bearings, and a "test" pinion nut I made from a used pinion nut torqued to 130 ft-lbs. It steadily got worse. The installer Jan 2, 2005 · Pinion Preload: When you assemble the pinion housing on a 14 bolt, you insert a "crush sleeve" between the inner and outer pinion bearings. Then, set the input shaft/worm gear thrust bearing preload and the sector lash adjustment to specifications. I replaced the seal and the leak went away, 2 months later the whine showed up. 8. Jul 26, 2016 · The pinion bearings turn 3 to 4 times more than the differential bearings, so they are a little more critical than the others. Then I remove the outer bearing from pinion, take all the preload shims from pinion, measure them with micrometer and note all of them. The act of increasing the numerical ratio of a gear set results in the diameter of the pinion gear becoming smaller. Jul 29, 2010 · I agree, the only thing that will allow the pinion nut to appear to back off (excess pinion bearing clearance) would be a bearing failure. Dec 12, 2014 · The preload is achieved by means of a spacer between the two pinion bearings. Feb 13, 2022 · When setting backlash and bearing preload on a Dana 80, should the shims go on the inside or outside of the carrier bearings? When I removed my carrier it basically fell out and there were no shims on the outside of the bearings like what I’ve seen on other differentials. Dec 12, 2016 · Pinion Bearing Preload, New Bearings 1. Using a inch lb torque wrench, (a dial type, or beam type wrench, and not a click type) measure the amount of effort it takes to rotate the pinion. Used bearings 1. They all sit tight in housing and on pinion. 25 Differential https We would like to show you a description here but the site won’t allow us. To set the pinion depth, install a new outer pinion bearing, without a crush sleeve, over the new pinion shaft. It's a nice way to do this and I'm surprised Toyota stopped doing it that way. Oct 1, 2006 · The reason why it's so hard to turn the pinion nut is because not only are you crushing the crush collar but you're also pressing the outer pinion bearing onto the pinion gear. The first adjustment is the input shaft/worm gear thrust bearing preload. Use an inch-pound torque wrench to check the preload. 11, and the pinion spacer is built into the pinion, and the pinion pre-load is set only with shims, thus no crush sleeve needed. Bearing preload can eliminate the clearance in standard ball bearings. The thread-locking compound helps retain the nut position and pinion bearing preload. Used pinion bearings are ok to reuse if still in good shape. Oct 17, 2022 · If the preload is close and the backlash is loose, add shims to the left side. Your noise under acceleration only indicates improper backlash, not a bearing problem. Over time the bearing preload will only loosen, so if you start at the high end of the specifications, it will last longer. /lbs. May 26, 2015 · In this video what you are seeing is accelerating up to about 50 MPH then letting off the gas. Mar 7, 2011 · Come to find out the pinon nut on the differential had come loose. The crush sleeve keeps the bearings apart a set distance. Pinion bearing preload is the tension on the pinion gear's tapered bearings. Remove the pinon and setup bearings. Too much pinion preload will cause increased wear on bearings and gears and can lead to premature failure. The best tool for checking pinion bearing preload, on any axle, is a dial-indicating torque wrench with a fairly small scale. Nov 18, 2019 · Topic: This video discusses adjusting pinion-bearing preload on a vehicle. Music introduction and closing: Ashokan Farewell: Written by Jay Unger, Guitar b Oct 17, 2005 · about 2 yrs ago I replaced the pinion bearings in my GM 14 bolt in my travelall due to pinion seal slinging oil (to much slop). I'm using a Raytek solid spacer with shims (thanks BGH) and new bearings. The diff had some rust inside on the bearings and carrier (thankfully nothing on the ring gear/pinion) and the pinion bearings were slightly notched from lack of use, but overall it's a like new-diff. The pin is used to index into the lockwasher. I removed the exhaust from the car and disconnected the driveshaft from the differential. 2Nm turning TQ, and no binding, has 65lbs/ft on the nut. so I left it. gtzna acehh vgvn qadt qkqrj bkdih zhubm zgvzuon ppf fqc