I'm installing a new gear set in my 12 bolt and am using a pinion spacer instead of a crush sleeve. A mechanic told me it is my pinion bearing preload is too loose. Transmission bearing cross-references - 4 speeds; Transmission bearing cross-references - 5 speeds; Transmission bearing removal tool; Transmission clutch push rod length (4 speed) Transmission clutch push rod length (5 speed) Transmission - Comparison of clutch levers that operate on the gear box - 4 speeds If the pinion depth is wrong, then it all has to come apart again, thus another crush collar needed. 37. 1) The whine usually starts after the differential oil has warmed up. Step 3: Remove Pinion Gear (CONTINUED) If the pinion gear still does not slide out of the housing, you can put the pinion and housing in a press. I think my carrier/ring system was ok, but the pinion side was waay too loose. If the preload is close and the backlash is too loose, tighten the left adjuster a notch or two until the backlash is correct and the preload is sufficient. Pinion depth is also spot-on. Technician A says the drive chain may be worn and loose causing the noise as it hits the inside of the case. Only show this user. The SetupTools Needed & Precautions. The tool you require for this is an extendable breaker bar. Placement. After that, its crucial to put the pinion bearing races into the housing properly, as they need to be in the right position for the whole set up.Extra Help. Final Steps. Noted. He may have just loctited the crap out of the nut and crossed his fingers. True B. 10. Backing the nut off will not fix it if you have too much preload. When I installed the gears I had a hard time getting an accurate preload. The noise may change while turning. Jefferson. The replacement of a pinion bearing would cost an average of $239 $286. Preload is one key setting, but don't forget pinion depth. The problem is that the proper bearing preload is When properly set-up, you will have to pry the carrier out of the housing and putting shims back in should not be easy either." Use an inch-pound torque wrench to check the preload. One of the easiest ways to get your pinion preload correct is to use the notch method. Been re-gearing my 2017 Jeep JK Wrangler, starting with the front end, Dana 30. Most common causes: Bad wheel bearing or loose pinion-bearing preload. Essentially what you are left with, is setting preload on the bearings similar to how cheap trailer bearings are setup for preload. but when I tightened it up, the crush sleeve snuck up on me quick and hit 29 in./lbs. When I went to set preload on the pinion bearings, I used the original 0.479" 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. If preload is too low (bearings too loose), differential case movement and ring and pinion gear noise can result. Check for worn bearings and replace as necessary. 2) The pitch changes or disappears with throttle variation. How tight you can have your bearings depends somewhat on the quality of the lathe. Delly. 12. Standard Bravo: Using adaptor and U-joint press, press one bearing in until oppo- site bearing is pressed out into adaptor. Wheel bearing wear and tear can happen for a variety of reasons well look at in a minute. This could lead to a multitude of issues such as, but not limited to, wheel wobble and seal leakage along with ABS and braking problems. Parts are estimated to cost about $66 $68, while the labor costs would be around $173 $218. Porcine Squealing. This is what I was told for mine. Aug 16, 2021. 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. Install the pinion to the correct depth with shims under the bottom bearing based on your measurement. The specs call for 14 to 19 inch/lbs with new bearings. Never, ever grind off any of that sleeve , it is meant to be crushed to set the load . With lower quality lathes, like mine, properly adjusted will be too tight and the headstock will heat up. What does it mean to preload a bearing? Bearing Preload is an axial or thrust load applied to a bearing that removes excess play. There are many ways to apply preload, as well as many benefits and potential problems with preload. The pinion nut is always replaced so you dont need to worry about damaging it. Page 135 DRIVE SHAFT HOUSING SERVICE MANUAL NUMBER 28 Art for Bravo XZ, Bravo XR, and Diesel Bravo U-joint service was not available at time of printing. This will cause the ring gear tooth pattern to show contact in which of the following areas of the ring gear? Learn more at Mortonsonthemove.com check out our other Youtube channel too here! If the preload is too high then you must use a new crush spacer and start again. B. JustinJK. Press shaft into the new bearing. Using a small file, simply make a notch in the pinion, the flange, and the old nut anywhere that these parts meet. Pinion bearing preload. pulled the pinon and the bearings look like this. It's also a good possibility that he got the pinion nut too tight when he replaced the crush sleeve, IF he replaced it. You MUST maintain the preload on the side bearings. 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. This truck is our life, It pulls our house. Possible Cause #3: Incorrect backlash can lead to damaged gear teeth. Pinion pre-load is lost gradually over the life of the differential as the bearings and or race wears with use. Jul 31, 2010. If you don't have the tools to measure and set pinion depth on an 8.8, then you won't know if its set correctly till you check the contact pattern of the ring and pinion gears. Rumbling or whirring at speeds over about 20 mph can be caused by worn carrier bearings. On the loose side, I'm getting around 16 Inch pounds, measured with a Snap-On 0-30 inch pound Hi all, Newb here having pinion trouble. There's too much positive camber. You may also trace this noise to a loose pinion-bearing preload. A front wheel drive vehicle with a rack and pinion power steering system is being diagnosed. Posted February 22, 2009. All parts - bearings, races, pinion, etc are new. The pinon was loose but the pinon nut was still tight. 1 - 8 of 8 Posts. I used SDK seals and bearing and the cheapest new axle I could find a DANA SVL one for about $60.00 from Rock Auto. A. Using a old pinion nut, and tightening to 125 foot lbs. Once the pinion nut has loosened and been retightened you don't know how much preload is on the pinion bearings. I'm having a heck of a time trying to set pinion preload - or even reduce free play. Do not install the oil seal. How To Fine Tune Backlash. Take note also of how many threads are sticking out past the nut. Its likely the case when you only hear the noise when decelerating. I tried to just retighten the nut, but could not get the play out of the yoke. 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. Notch It. I got it to 150 ft lbs and there is still play. The pinion preload was way too loose <4 in./lbs. Use an inch-pound torque wrench to check the preload. Press the bearing/shaft assembly using the bearing's outer race. Be sure to use a new nut if possible and use red Locktite on the threads. As with pinion bearing preload, it is critical. That would preload the spindle bearings for a test cut. I installed 5.38 gears about 8000mi ago, reused the pinion bearings and replaced the crush sleeve. The closest that I can get with the shims provided is 24 in/lbs. (rear bearing): 1.3755 571001 Wing Surfaces and Tips - Inspect B 1,3 510, 520, for skin damage, loose rivets, and 610,620 condition of paint. False. After disassembling the rear, I found that the sleeve on the yoke was wore, and the outer pinion bearing and race were pitted. You torque the nut to specs, if the preload is wrong, you need to add/remove shims as needed from the outer pinion bearing. Dec 30, 2009. Under normal use and maintenance, pinion bearings can last a very long time. My 84 Suburban, which spent most of its life towing, just had a rear pinion bearing go bad at 187K miles. A. If that is the case, thread the pinion nut back onto the pinion and use a bigger hammer. A vehicle with variable assist steering feels loose only at highway speeds. 17. If the preload is too loose then remove shims so that the bearings will be tighter against the races and increase the preload. perrycyn said: I have a slight whine in my new frpp 4.10 gearset after install. I know people do it, but its not good practice to reuse or retorque crush collars. If the nut was loose, the likelihood of the pinion bearings going out is likely. Improper gear spacing will lead to wear and damage to your gear set. BE SURE to add this SAME AMOUNT to the opposite shim. Enter the email address you signed up with and we'll email you a reset link. If the preload is too loose then remove shims so that the bearings will be tighter against the races and increase the preload. 90-863160 MAY 2000 Page 3A-33 When I tighten the nut down all the way before torquing it down there is still play in the pinion. Possible Cause #2: Worn carrier or pinion bearings can create excessive play between the gears and produce an uneven wear pattern or chipping teeth. The symptoms are classic for a differential pinion that, over time, has lost the factory pre-load settings. You only get 1 chance to set preload with a new crush sleeve, take it too far and throw it in the trash and start again. Only show this user. Remove loose bearing. 12,382. You can now put these items right back where they were before. Too loose-bad, Pinion could walk around on the ring gear. False Tapered roller bearings must be adjusted to get the correct end play or preload. After having some rear end noise on my 10.25" rear, I crawled under and found that the pinion nut was loose, and the yoke had some play. Ring/Pinion Swap Specs (Turn the S-10/F-body pinion down .060") H-body pinion O.D. I pulled out the carrier and rechecked the pinion preload without it and it was at 24. You have to pull the carrier and pinion gear out to get the crush sleeve out. Loose pump bolts are the major cause of excessive endplay. Remove thrust plate (U). Banging or clunking only on corners can be caused by broken spider gears, lack of sufficient positraction lubrication, or worn positraction clutches. 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. From what I could find it should be 14-19 in-lbs so I'm gonna get a new crush sleeve on Monday and do it more carefully. Steering arms, links, tie rods, and related components, collectively known as steering linkage, connect the steering gear to the steering knuckles and front wheels, converting steering wheel and steering gear movement into the turning motion that steers the vehicle in the direction intended by the driver. Feb 10, 2014. Remove PTO end engine mount. Wiggle the pinion assembly as you tighten the nut to get an idea of how much more you need to collapse sleeve. Once the backlash and pinion depth meet tolerances, remove the carrier and establish the final pinion bearing preload. #2. A bad pinion bearing makes a whirring noise at all speed levels, during acceleration or deceleration. A worn wheel bearing can cause a howling noise. If the preload is too tight then remove the pinion gear and add shims so that the bearings will not be as tight against the races. If youre also hearing a rumbling noise when turning, then its likely a bad wheel bearing. Do not use the shaft to press the assembly into the 38. If your pinion turns easy with just a finger and thumb then it's probably more like 5 to 10 inch pounds, which is fine for used bearngs. These pinions are set up with a crush sleeve to preload the pinion bearings . Remove crankcase bolts. If you are only changing the yoke and you will not be removing any bearings, crush spacer or the pinion gear, then just install the new yoke and troque the nut to 150 foot pounds. I know it is after the fact, but you should have marked the pinion nut and reinstalled with the same amount of turns and maybe just a tad more. #1. 571002 Wing Struts and Strut Fairings - Check B 1,3 510,610 for dents, cracks, loose screws and rivets, and condition of paint. Since a wheel bearing has to accomplish all this for hundreds of thousands of miles, its not surprising that they wear out occasionally. I frankly recommend dropping the diff well, i adjusted the preload, and the noise disappeared, i didnt even start to crush the sleeve last time and its still to loose cause i snapped my breaker bar, tommorow im picking up a socket for the 3/4 drive bar, im gonna teach that sleeve a lesson, back to the pattern however, when i change the oil next week i am going re-check the pattern and re check the backlash, What are the best methods for preload in a bearing system?Springs. The simplest method of applying preload is to use a wave spring. Adjustment. Adjustment means setting the internal clearance or preload in an adjusted bearing arrangement during assembly.Manufacturing. I've noticed there's not much help around here. Pinion bearing preload (new) 20-30: inch pounds: Pinion bearing preload (used) 8-10: inch pounds: Pinion bearing HP60 used in rear: 12-20: inch pounds: Backlash: 6-10: thousandths of an inch: front wheel bearing freeplay: 1-10: thousandths of an inch Check latches, hinges, and seals for condition, operation, and security of attachment. A quick follow up on this, I've gone about 2000 miles so far on the new axle and axle seal and pinion seal. I was dinkin around with changing out the pinion bearing in my D44 today, got it all back together and backlash was still in spec but at the tighter end - .007". With a crush sleeve, pinion nut torque doesn't mean anything if you have slack or binding in the pinion bearings. In setting up my 8.875 pinion preload, I'm getting two different mesurments. 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.The only way to accomplish this is with the carrier out of the housing. so I left it. Too tight and your pinion bearing bearings burn up-IMHO bad, but not as bad. During the test drive, the technician notices the steering is binding in one spot, only while turning right. I am redoing the bearings in my chrysler 8.25 and I've gotten it down to setting the preload on the pinion. You may be too tight or too loose. If your cars engine is making a shrieking sound it could be an issue with the serpentine belt.Either the rubber has gotten old and brittle or the tensioner could be failing. I'm using a Raytek solid spacer with shims (thanks BGH) and new bearings. Ring gear B. After installing and before measuring, roll the pinion several times, then check rotating torque. If the pinion bearing preload exceeds the specified allowable range, install another new crush sleeve and start over. The planetary pinion gears in a planetary gear set are mounted in the _____. 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. Regular clunking every few feet may indicate broken ring or pinion gears. Press On Bearing 35. Feb 8, 2022. 3. Install your spacer and shims to to get 25-30 in-lbs of rotating torque. On the other hand, adjusting the bearing too loose causes excessive looseness and vibration in the system. This article has a good write up on how to set the pinion preload. You tighten it (crushing the new crush sleeve) until the correct pinion bearing preload is achieved. It is only during coast. Will it take all the way to 200-210 ft lbs before the pinion even gets tight? A bad wheel bearing sound is usually a loud hum coming from that wheel sort of like loud road noise from bad tires. Old used ones loose their ability push against the inner and outer bearing races. After about 8000mi the pinion seal started leaking and I noticed a gear noise on decel. I used gasket shellac around the edges of both seals and waited a day before refilling with oil. The preload is measured by measuring the torque (in inch/lbs) required to rotate only the pinion with an empty diff housing. Guyton, GA. - The case bearing preload is the amount of force pushing the differential case bearings together. No leaks or issues so far. housing, as bearing damage may result. Q: What noise does a bad pinion bearing make? The ring gear to pinion backlash is less than specifications (too low). Anything else is