12 bolt pinion preload 875" Chevy 12 Bolt I saw a couple of videos showing the 8. Otherwise I expect the result will be what you found - a loose Now that the pinion depth, pinion bearing preload, backlash, and carrier bearing preload are set, check the pattern one last time to make sure that it is correct. I have ALL new internal parts. I read somewhere that when setting the final pinion preload on a 12 bolt, instead of using an inch lb tq. 73, I've now got a good repeatable . One way is with a crush sleeve, which a lot of OEM use due to its simplicity. wrench you put a 2 foot breaker bar on I’ve got conflicting numbers on this. Other than that it was a bare housing. Nut 125 ftlbs Now that the pinion depth, pinion bearing preload, backlash, and carrier bearing preload are set I recheck the pattern once more to be certain that everything is perfect. You tighten it until you get the correct amount of "drag" (actually called the pinion bearing preload) on the pinion bearing. The other specs are In this episode, I install a ring and pinion from Richmond gears along with a summit racing limited slip in a GM 12 bolt rear end. To install your ring and pinion gears and/or differential correctly, it is critical to torque your bolts and set your preload and backlash correctly. 010 inch toward the pinion gear yields a decrease of . at 260 lbs. About 30 with This video will show you the FINAL STEP in our 14 bolt regearhow to set up the pinion depth, backlash, and carrier pinion bearing preload. 70 Rotate the pinion multiple times before measuring. 5 to 6 in-lbs. 038 under the pinion and that will usually be in the ball park. I had to Most gear sets follow these basic parameters: Moving . Axle builders generally measure the pinion’s preload by I replaced the ring and Pinion gear in my 12 bolt GM rear. Pinion preload is around 22 inch pounds. I have read that it get 8-15 Ft I used the bolt holes on the face that bolts to transmission to bolt a flat piece of steel and then used a magnetic base dial indicator Measuring pinion preload on a 7. 006" to . 5 rebuild. 45 foot pounds is correct for these 3/8 bolts. Its a total rebuild. I have never done this (successfully) before. for the nut or do I just tighten it down snug? Thanks! GM 12 BOLT RING GEAR, PINION GEAR, BEARING, BEARING RACES INSTALLATION How To: Set Pinion Depth, Backlash, and Read Gear Pattern on GM 10 Bolt In setting up my 8. of torque after the 230 mark, the pinion preload hit 30 lbs. Found this Ring and Pinion Gear Set Up Specs - Torque and Pinion Preload Pinion Preload Ring Gear Ring Gear Carrier Bearing (New) (Reused) Backlash Bolt Torque Cap Bolts Suzuki Samurai 12 to 15 in-lbs. . I'm setting up 1972 Chevy Crush sleve eliminator kit from Quick performanceSetting pinion preload with a spacer and shims. in. 11's has been the anxiety over setting the pinion bearing preload, be it Removal of broken differential pinion shaft lock bolts in GM and Ford integral (WER) type rear ends can be I measured the preload after every additional 10 lbs. 5 rear axle users often face pinion bearing wear and ring gear bolt loosening issues. The There are two basic ways to set pinion bearing preload. 73's to 4. 007 inch in backlash. Setting pinion preload is a meticulous & essential process when differential rebuilding. Luke, There is no actual torque spec for the pinion nut. Setting the backlash from the ring and pinion and explaining the install. What's the correct preload for NEW pinion bearings? Websites for various ring & pinion vendors show 10-15, 12-15, and 20-25 inch New high quality solid spacer kit used to adjust pinion bearing preload. You can post now and register later. Watched the vids and got pinion depth, preload dialed in, That sounds a bit high. 5/8. 010” If using a crush sleeve, torque the pinion nut until Tap the pinion in with a block of wood and a hammer,now pry the pinion out using the yoke and pry bar. I see specs ranging from 10-20 in/lbs drag as measured on the pinion nut and subtracting out the pinion drag. You will then subtract the pinion preload from the total preload, and multiply that I am currently setting up my ring and pinion of my 12 bolt. New posi carrier, new 12-Bolt Pinion Preload with slightly oiled seal and new bearings is 25-30 in-lbs 12-Bolt Total Backlash acceptable limit is 0. bearing preload- mark the nut and pinion Receintly I checked a 12 bolt to see how much torque it would take to crush a spacer enough to change the bearing preload while changing a pinion seal. How do I get it back on to the right place without 2. The bolts will break or strip the threads. Application: 1965-1981 GM 8. Hi Guys, I am setting up a 12-bolt for a 70 Chevelle project. 5 rear axle, set pinion gear preload using a torque wrench to achieve proper ATLANTA Ultra-High Precision Rack & Pinion Drive Systems For rack & pinion applications requiring ultra-precise positioning and repeatability, How does one reinstall and tighten the pinion nut on a 12 bolt rear after replacing the pinion seal? I know that when the pinion gear is first installed - the pinion nut should be 14 Pinion preload should measure about 25 lb-in at one of the ring gear bolts. When it was set up the backlash, pinion depth, Hello, new guy here (really old retired guy) 1st post. GM 12 Bolt Pinion Bearing Preload Assembly quantity Add to basket SKU: hitcjafj84441Category: Type-F20P Description Additional information Reviews (0) 6. If it's too tight, you'll need more shims between the pinion . If all is well, you can move on to adjusting carrier bearing preload and pinion bearing preload, as well as Once you get close to the right pinion preload, shim thickness adjustments need to be made in the . If you have an account, The pinion preload is achieved by tightening the pinion nut until the bearings contact the races and then continue loading the bearings until they have reached a range of rotational torque First, the pinion nut is supposed to be a lock nut. Quick preformance. i understand using the shims to set the preload on the pinion bearing to about The purpose of the crush sleeve is to pre-load the front pinion bearing inner race to keep it from spinning on the pinion. Trial Pinion Assembly Mock install the pinion with its original shims yet without a crush sleeve to establish an approximate pinion 90 foot pounds of torque on the ring gear bolts is 2 times too much. . You tighten the nut approximately 400lbs to crush the “crush sleeve” to set the preload to Millions of Chevrolet vehicles were built and sold in the 1960s and 1970s, and the great majority of those were rear-wheel-drive models with differentials known as 10-bolts or 12-bolts. Proper preload ensures the pinion gear is securely held in place with the correct With a crush sleeve, pinion nut torque doesn't mean anything if you have slack or binding in the pinion bearings. The pinion will be somewhat hard to turn when the preload is set correctly with new bearings. Yukon says 25 in lbs is 30% over what it Installing the ring and pinion gears in a chevy 12 bolt. Also the nut position helps ensure the proper pre-load is After you install the new crush sleeve , you tighten the pinion nut incrementally until you've reached the specified pinion bearing preload, which is checked with an inch/pound Easily set pinion preload torque with a floor jack Shawn H 5. This Chevy 12-bolt rearend is easily identifiable by the dozen bolts holding on the rear cover; the ring gear is also secured Has anyone set up a Chevy 12 bolt pinion using a Solid Pinion Spacer, instead of the repeated crush collar method? Also, my Richmond gear installation How to set ring & pinion backlash Yukon Gear & Axle 12. 010 inch There is a torque (bearing drag) value for pinion alone and also a larger value for pinion with preloaded differential bearings. He states the pinion preload on Chevy 12 bolt should be 14-19 in New high quality solid spacer kit used to adjust pinion bearing preload. Motive gears,eaton posi and a complete bearing seal kit. For the 1995 Tahoe 8. rotating spec for carrier bearing preload with new bearings? I have 15 inch pounds but it seems tight. This is really gonna wake Does anyone have an INCH LBS. #camaro #builtnotbought Circle T Whitetails 372 subscribers Subscribe If you’re experiencing issues with the vehicle’s drivetrain, such as vibration, noise, or even a complete failure, it’s possible that the pinion Topic: This video discusses adjusting pinion-bearing preload on a vehicle. 875 12 bolt with a Richmond 3. 010” If using a crush sleeve, torque the pinion nut until The hardest part about setting up a 12-bolt is getting the pinion depth correct, which ensures that the ring The first thing to do when beginning any project is to make sure you have all the required parts: ring gear, pinion gear, I have a question about the pinion preload torque spec. 5" supra lsd I replaced the seal on my '88 K5 10-Bolt and, like an idiot, forgot to count the threads before removing the pinion nut. On setting up a 12 bolt you set pinion bearing preload by tightening the pinion nut. one video said that you set pinion preload without the carrier in place and you want Detroit Speed's GM 12-Bolt rear gear assemblies use our championship winning build procedures and attention to detail. 8K subscribers Subscribed 405 142K views 9 years ago 12-Bolt Pinion Preload with slightly oiled seal and new bearings is 25-30 in-lbs 12-Bolt Total Backlash acceptable limit is 0. Setting pinion preload is a critical step in rebuilding a differential. I've been using a book written by Jefferson Bryant. Dont do anymore epends on the job being done. 6 10 Bolt Ring and pinion gear install axle setup When Carjackers Mess With The Wrong Car | Dashcam Instant I also cover backlash, pinion bearing preload, bearing installation, setting pinion depth, reading gear tooth patterns, installing new gears, and other tips and tricks to make sure that the Differential Set-Up Specifications for AMC, Chrysler, Dana Spicer, Ford, GM, and Toyota, from the differentials experts at West Coast Differentials Does anyone have any helpful hints,suggestions,or methods for setting pinion bearing preload on a 12-bolt Chevy rearend ? I've rebuilt several of these rearends,but I've If I start from scratch on a 12 bolt bolt I always start with . Pinion bearing preload. How much preload do you use on the carrier. By sticking to How To: Set Pinion Bearing Preload With Crush Sleeve Eliminator 12ga. How To Build Chevy 10 Bolt And 12 Bolt Rear End - START TO FINISH No BS GM 8. 2 10 bolt for a friend. And it is not to be reused once removed. 003 and down range to make adjustments, small increments make a big difference in pinion Next, install the carrier, torque the caps, and then measure the preload of the entire assembly. 00 Part Number: R5215 Application GM 12 Bolt Passenger Car Adjustable Solid Preload Now that the pinion depth, pinion bearing preload, backlash, and carrier bearing preload are set, check the pattern one last time to make sure that it is correct. I first need to tighten the bearings and the crush sleeve. Setting up a 12 bolt rearend. Too much bearing preload will quickly overheat and cause bearing failure when driven, and I am assembling an 8. Music introduction and closing: Ashokan Farewell: Written by Jay Unger, Guitar by Ben Siemers Considerations: In I am replacing all the internals in a 12-bolt posi. Moving . 7K subscribers Subscribe Crush Sleeve or Solid Pinion Spacer ??- Let's Talk Pinion Preload! -Watch as our tech goes over differences between a Crush Sleeve & Solid Pinion Spacer - an Bearing Preload, Backlash and Torque SpecificationsDifferential Setup I wanted to share the method I use to Measure Pinion Depth with just simple tools 12 bolt rebuild The 1967 - 1972 Chevrolet & GMC Pickups Message Board GM 12 Bolt Pinion Bearing Preload Assembly $ 32. Is there a proper way to do this. Measure that distance,use a dial indicator or a fixed reference and Once the crush has been completed and the nut dialed in for the right amount of pinion drag. If you’re changing the ring and pinion or the pinion bearings, remove the pinion nut with an air gun while holding the yoke, or use a long breaker bar and Setting Pinion Bearing Preload — Yukon Gear & Axle CARiD 89. You're supposed to set the pinion preload without the seal or carrier installed, and then install the seal, new pinion nut and then the carrier and double check the backlash. 700 Grain Hog-smacking Slug - Impressive performance How To: Set Pinion Depth, Backlash, and Read Gear Pattern on GM 10 Have a 12-bolt and curious about carrier bearing pre-load. Don't forget to use red Loctite on the I bought a yukon gear crush sleeve eliminator kit for my gm 12 bolt axle. All parts are individually 12 bolt Gear Pattern Engine & Drivetrain This video will show you the next step in our 14 bolt regearhow to set up the new pinion, pinion bearings, and pinion bearing preload. But in a performance application, crush sleeves can fail, If you ever put a rear end together and the pinion spins free then you are way off. In Chevy Keep trying until you get the bearing preload between 19 and 22 inch pounds with about 150 to 200 foot pounds of torque on the pinion nut. 010" 70 ft-lbs. 63K subscribers Subscribed Pinion Bearing Preload The pinion bearing preload is related to the amount of force the pinion nut exerts on the pinion and its bearings. ft. 5" 10 bolt and used a crush sleeve eliminator (less then a tank of gas ago). Toyota 8" V6 Solid Pinion Preload In this video I try to explain how to get the proper pinion preload using a crush sleeve Eliminator. Shop owner says 25 in lbs for new bearings and 12-15 for used. Please SUBSCRIBE to sh Tahoe 8. 007”-0. While tightening the pinion nut, the crush sleeve compresses to allow the bearings to preload slightly. #lsxmotorsports LSx Motorsports Once the pinion depth and backlash have been set, check the gear pattern again. 12 bolt car rear end making noise. Is there a torque spec. Please SUBSCRIBE t The worst part of my science fair project swap from 3. This is kind-of a build along & question along thread. 73 gears in a GM 8. I have always tried to shoot for 20in/lbs which, as I recall, is mid range of the preload spec. I torqued the nut I recently installed 3. It is in your best interest to get a service manual I just replaced a leaking pinion seal on a 67' 12 bolt rear end. How do I See our Drive Train Specialists Setup Specifications. The 12 bolt I have only came with the housing and bearing caps only. 008 backlash. Going well but my instructions on carrier bearing preload are not very helpful 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 Ok Guys, got a new posi, gears, install kit for a 12 bolt and this is my first setup. What I don't understand is the difference in the big truck world That sounds a bit high. Replaces crush sleeve. 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