ft. This is an 8.2 BOP axle. Have a seal puller if possible, makes getting the old one out a lot easier. This means that extra care and attention needs to be taken when installing these components so that they do not become damaged or rendered unusable. The 8.5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. Reply Quote. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. FORD: .020. The easiest way to identify the 8.2-inch rearend at a glance is by the shape of the housing and the spacing between the lower bolts on the cover. havent done it, but i have the haynes repair manual and ill type out the steps for you, may take me a second though. Set the preload carefully (see "Set Up Specifications") so that the bearings will have a long life. GENERAL MOTORS: APPLICATION: FT-LBS / ( N-m) AXLE SHAFT FLANGE BOLT 'S' BODY CAR: 27 (37) TRUCKS: 60 (82) AXLE SPINDLE NUT 'A' BODY: 192 (261) 'C' 'E' 'H' & 'K' BODIES : 180 (245) 'J' & 'L' BODIES . For that reason,many enthusiasts are considering the 10-bolt. The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). Is a GM 10 bolt rear end good? 6 TO 10. This gives us confidence in the quality of the parts we sell. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. . The side bearing preload is the difference of preloads (5) x the gear ratio (3.73) = 18.65. The 8.2-inch 10-bolt has a smooth, round, lower-case area (no cast-in protrusions), with an 11-inch cover that has a diagonalprotrusion at the top. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. However, the gears will not interchange with a Chevy 8.2. You can use this instead of the crush sleeve. It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. Find the application and ratio you need? Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. Tighten nut until it takes 15-20 inch lbs of torque to rotate the pinion bearings: None: Self Locking Nut . This process must be done carefully, gradually increasing the tightness of the nut in increments until it reaches the desired torque level required to rotate the pinion correctly. This will cause the bearings to press more firmly against the races, thereby increasing preload tension. You tighten it until the bearing preload is correct. First introduced in 1970 as a corporate replacement for the older 8.2-inch 10-bolt or 12-bolt 8.875-inch axles, its popularity quickly spread to nearly every GM division aside from Cadillac throughout the 70s. Gear oil is nasty stuff, mostly in smell. It saved me time and effort trying to crush a brand new crush sleeve. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . Finding a 12-bolt that is affordable, is getting to be anearly impossible endeavor. for new bearings. This will help ensure that there isn't an excess of tension on these components, which can lead to premature wear or even failure. It's essential that you use enough force while tightening down the pinion nut so that your component will stay securely attached; however, it's equally important not to over-torque the part, which could cause permanent damage or deformation. Once the specified preload has been obtained, make sure the bearings are seated by rotating the pinion several times. It involves placing a collapsible spacer between the bearings of the pinion gear, then using a torque wrench to tighten the pinion nut until it reaches the correct amount of pressure or preload on the bearings. We think top-notch customer service is the most important thing we do. Generally speaking, these torque specifications will fall between 20-30 ft/lbs; however, for most applications ARB recommends a torque specification of right around 25 ft/lbs. I then assembled the pinion, inner bearing, shim pack in the carrier then pressed on the outer bearing using a 20 t press then installed the yoke washer and nut. How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. Pinion nut has no torque spec. Ford 9 inch Torque Specs for Ford 9 inch center Section torque specs. 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. ring gear bolts torque at 175lb/ft, bearing cap bolts torque at 200lb/ft, and the ring gear backlash should be between .006-.010 for aftermarket gears, .005-.007 for OEM gears. Alternate Description. Axle Type Cover Bolts FT. LBS. Rotate the pinion when tightening the nut to seat the bearings evenly. In addition, if the sleeve is over-crushed during installation then it must also be discarded and replaced with a new one as crushing it too much can cause damage to other components within your transmission. How tight should a pinion nut be? The rear end is full of it. Many times when you are rebuilding an existing rear end you want to save the original pinion bearing shim and re use it under the new bearing. Not only has Chevrolet taken the initiative to buy back some of their 2017-2019 Chevy Bolt electric vehicles (EVs) due to safety recalls, but they have also gone above and beyond by reimbursing owners the full purchase price for their vehicle. So, in order to adjust the pinion bearing pre-load, shims of varying thicknesses are inserted into pre-load retainers. When combined with a low curb weight, this combination creates acceleration so fast it feels almost supernatural. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. Constructed from high quality steel, the PYN10 features an integral washer design that ensures proper alignment of the bearing preload during installation and prevents damage to both the yoke and bearings. OEM bolts have thread locker on the threads. By asking ourselves what makes us different than other companies, our answer is that we deliver the level of customer service that other companies only promise. GM 10.5" 14 Bolt: 20 to 35 in-lbs. 10.50 PINION NUT: GM . How involved is the process of changing it? The 12-bolt is generally considered to be the stronger of the two rear axles. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. This axle was found in various vehicles from Chevrolets and Pontiacs to Oldsmobiles and Buicks with some of these models continuing production well into the early 80's. We pressed the new bearings onto the carrier and the front pinion bearing and went ahead and put the assembly together into the housing. I have been taking it to ~250-300 ft lbs. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. Call 800.979.0122, 7am-10pm, everyday. It's not easy, but pushing yourself can be rewarding; after all, with hard work come great rewards! Would this be the same How to write up for my truck? Mikz86TA. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. Just out of curiosity,what are the 8.5 (r 65lbft & c 60lbft ?) In this context, "hardest gear" refers to the ratio of front sprocket teeth to rear sprocket teeth - typically expressed as 4.55:1. Automotive Chassis Torque Specs. That way, you dont unknowingly spend money on something you really do not want. Low-end torque refers to the amount of power and force generated by an engine at low revolutions per minute (RPMs), usually between 2000 and 3000. It has to be drained to get a peak inside. I don't use it on the bearing cap bolts. I have a 1993 Suburban K1500. The ideal amount of torque required on a pinion nut when installing an axle depends on many factors, but typically you should aim for 110-125 ft/lbs of torque unless otherwise specified by step #6 during the installation process. This means that turning the pedals at the front will turn the back wheel 4.55 times over, which requires quite a bit of effort but allows for fast movement once achieved. They say ignorance is bliss but I say it's just damn expensive. It should be noted that while this axle is suitable for everyday driving and light duty applications, it must be upgraded if you plan on doing any serious racing or off-road activities with your vehicle. Pinion nut torque (shimmed preload style): 250 ft*lb. Torque measures the amount of force that is generated when the engine rotates at a certain speed. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The PYN10 is a 30 spline pinion nut designed for this purpose, and it is specifically made to be used with vehicles that have a 30 spline pinion in their 10-bolt 8.5" rear end assembly. One is the small, 7.5-inch, another is the 8.2-inch, and yettwo more are the 8.5 and 8.6-inch. Once you give everything a thorough inspection you can begin the re-assembly process. Setup Specifications. Fords small block and big block engine families have their share of flexplate differences. Recheck the torque to turn the pinion until it gets to the point where the amount of torque it takes to turn the pinion is between 15-25 in. DIFF MODEL. If i missed any thing PLEASE tell me. Furthermore, this action reflects positively on the company's overall commitment to providing reliable transportation services while ensuring its customers' safety remains paramount at all times. Sometimes strength is an important factor when choosing between components, and this is true with the 10-bolt and 12-bolt rearends. It is important to note that if possible, it is best practice to use an old or used pinion nut for this operation, as new ones can often bind when tightened too much. This is very important, because if you go too far the crush sleeve will be ruined. As a result, this construction became one of the most popular axle assemblies on the market due to its durability and affordability. When in doubt, refer back to step #6 for more information about suggested torque specs for your particular axle installation project. 3. remove yoke from splines. We show you how to keep that old GM transmission when swapping in an LS engine. The retaining bolt can be hard enough to get out without using the red high strength Lock Tight on it. Not only is it important to keep the backlash variation under 0.005?, but in an ideal world, no variation should be present at all. Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. Skip to main content. 24-32 INCH pounds?? The amount of backlash varies depending on the quality and cost of the gearhead; more expensive precision gearheads have nearly zero backlash, while an inexpensive model may have as much as one degree or more. Carrier Cap Bolts. You can feel the power of all that torque in your bones as it propels the car forward even faster than before. West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more! There were an untold number of 8.2-inch axle assemblies built, and although it is only marginally stronger than the 7.5-inch rearend, it does have some aftermarket support. When installing a new 8.5-inch 10-bolt rear differential, it is important to use the right pinion nut for your application. Are all GM 10 bolts the same? New bearings 19 to 22 inch pounds. Too much won't hurt anything other than break the bolt. It was used in different models by all GM divisions with the exception of Cadillac. Ring and Pinion Ratio Variations - An explanation of why some ring and pinion gear ratios vary. The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. Differential cap bolt torque: 90 ft*lb. Good info on this site from what I've seen so far, kudos. It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. Find the torque thats on it before hand and tighten it down to that afterwards. Uses 28 or 30 spline c-clip axles. Some pinion nuts require a special procedure to be properly installed. The only torque you should be concerned with is the torque it takes to rotate the pinion gear alone, 8-14 inch pounds for old bearings, 16-29 in/lbs. A full range of pinion gears is offered for the Chevy 10- and 12-bolt axle assemblies so you are able to select the correct gear set for your vehicle, application, and setup. The Fora platform includes forum software by XenForo. I've put a rachet strap to the axle, hit it with a hammer prayed from the inside but it won't budge enough for the c clip to clear the spider gear. I need the torque on the pinion nut for the rear differential. 1/2" x all lengths 100-110 ft lb. Next remove the nut and change the seal. The 8.5-inch 10-bolt rearend was used in cars and trucks over a wide range of years. Lifted78Chevy. lbs.) Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. Pinion Bearing Preload (New) (inch/lbs) Pinion Bearing Preload (Used) (inch/lbs) Backlash (.001 in) Ring Gear Bolt Torque (Foot lbs.) The 8-inch rear axle looks very much like the popular Ford 9-inch rear axle. GM 8.5 10 bolt - 10 bolt cover with 8.5 ring gear. Step 1: To seat, torque nut to 50 (lb-ft) while spinning hub. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. Chevy Hardcore NEWSLETTER - SIGN UP FREE! 1/2" T-bolts - 50 ft lbs. 4.replace seal. Continue tightening the pinion nut to collapse the spacer and preload the bearings. and 12 bolt #s. found these #s at Richmond Gear: Torque specifications. Not only is this a wise financial decision for both parties involved, but it also shows how much Chevrolet values customer satisfaction and safety. Additionally, it increases load capacity because it prevents misalignment due to vibration or thermal expansion of components. The easiest way to tell the difference is by looking at the brakes.
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