Crawlpedia is an off-road encyclopedia featuring a complete list of proper ring and pinion gear set up torque and backlash specs. Ring gear bolts. Step 2: Back off, then torque to 35 (lb-ft) for automatic hubs,or 50 (lb-ft) for manual hubs. Rightfully so, because when comparing the 10 and 12-bolt units, its definitely the more durable of the two. 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. I don't use it on the bearing cap bolts. 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. In addition, if a crush sleeve is over-crushed during installation then it must be discarded and replaced with a new one as it will no longer be able to provide the necessary level of tension between the bearings for them to function properly. :yipi: Thats it?? Crankshaft Main Bearing Cap Bolts 70. MODEL 20. Install left-side adjusting nut lock, washer, and bolt. The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. Pinion nut has no torque spec. Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . All rights reserved. 3/8" x all lengths 45-50 ft lb. The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. 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. 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. Have a seal puller if possible, makes getting the old one out a lot easier. Free Shipping - Yukon Gear & Axle Crush Sleeve Eliminator Kits with qualifying orders of $99. havent done it, but i have the haynes repair manual and ill type out the steps for you, may take me a second though. So, when adjusting preload, if it is too loose then the shims should be removed. 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. The correct way to do this is to use the yoke lock (part of the setup tool kit we bought) and use a breaker bar with a cheater pipe. Additionally, its unique thread pattern provides torque retention while eliminating any possibility of loosening or vibrating off over time due to vibration or shock loads. 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. Step 3: Back off 3/8-turn for automatic hubs, and just enough to free the bearing for manual hubs. It is well known that altering the gear ratio of a vehicle, whether it be through changing the pinion or spur gear, can have a significant effect on performance. The small torque . Once you get close to the right pinion preload, shim thickness adjustments need to be made in the .003 and down range to make adjustments, small increments make a big difference in pinion preload. On the other hand, if there is too much backlash then this will also lead to excessive mechanical wear due to increased friction and noise as the teeth continually rub against each other. Chevy Hardcore NEWSLETTER - SIGN UP FREE! The PYN10 - 10-Bolt 8.5" Pinion Nut is perfect for 30 spline pinions, providing a dependable and secure connection between the driveshaft and differential ring gear. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. Mine is leaking. Pinion nut torque (shimmed preload style): 250 ft*lb. With proper maintenance, this rearend will hold up over time and ensure that your vehicle runs smoothly no matter what sort of conditions you put it in. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. Reply Quote. This allows you to put the pinion gear in, set the pinion bearing pre-load, set the backlash and then run a contact pattern without the chance of compressing the crush sleeve too much. This heavy-duty nut is made with high quality materials and manufactured to exacting standards, ensuring it stands up to whatever you throw at it. This distance must be precise; if it is too small, the gears will bind together and cause mechanical stress which can lead to premature wear or failure. Differential Locker Comparison - A detailed comparison of popular differentials and lockers. It's got a 350 with a 10-bolt rear end. It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. Not only does a torque vectoring differential perform the same basic tasks as a regular differential, but it also has an extra element that sets it apart: its ability to transfer torque between the left and right wheels independently. Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. Again, this would be okay in a daily driver or cruiser application, but if installed behind an engine with horsepower numbers climbing into the 400 range, you can plan on an eventual failure. lbs.) Ring gear bolts 65 foot pounds, bearing cap bolts 60 foot pounds. Axle Type Cover Bolts FT. LBS. Increasing the size of the pinion or decreasing the size of spur gear will result in increased top speed for your vehicle; however this will come at cost to acceleration and increase temperatures from increased load. . . 8 to 11 in-lbs. Backlash = 6-10 (.001 inch) 2003 S-10 ZQ8 - 262/M5:bowtie: 1986 Pontiac Trans Am - 355/A4 On top of that, many pickup owners find that making such modifications also provides them with a greater sense of control over their vehicles capabilities, allowing them to feel more confident and secure on their journey no matter what lies ahead on Oct 5 2022. For a better experience, please enable JavaScript in your browser before proceeding. While the 8.5-inch rearend was used on vehicles up to 1999, The 8.6-inch (8.625) was used on 2000 and later-year trucks. JavaScript is disabled. 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. This is an 8.2 BOP axle. By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. extended cab crew cab p 14 8 6 gm rear axle specifications 10 bolt cont, what are the torque specs on silverado rear diff cover you need rear axle pinion nut torque specs for a 98 chevy 12 ton pickup 2wd the nut is generally torqued to 260 300 ft lbs or 25 inch, proper torque specs for 2002 chevy silverado 1500 44 hub assembly to steering . Oct 20, 2011. Preload doesn't have any effect on spring stiffness; rather, its used as a way of compensating for springs that are too soft or too stiff. Replace original worn or damaged nuts each time a gear set is changed. One is the small, 7.5-inch, another is the 8.2-inch, and yettwo more are the 8.5 and 8.6-inch. Torque measures the amount of force that is generated when the engine rotates at a certain speed. This article is a compilation of information and and specs relating to the venerable GM Corporate 14 Bolt full-floating rear axle - also referred to as the 10.5" (after the size of the ring gear in inches) or just simply the "14b" for short. As the speedometer rises, each gear shift is accompanied by an even more intense sensation of power, making every drive exhilarating and unforgettable. This tension is achieved through a collapsible spacer which is placed between the bearings and then compressed by turning the pinion gear nut. Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. This technology is particularly advantageous in improving vehicle handling and traction under all types of driving conditions, from wet roadways to tight turns. 5. put back together and tight pinion nut to specified torque. 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. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. Not sure the torque specs on the carrier bearing caps, we red lock-tight them and hit them with the impact pretty hard at work. GM 10.5" 14 Bolt: 20 to 35 in-lbs. This procedure is necessary in order to ensure that everything within the drivetrain is working correctly and efficiently. If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. Just think, now when you and Drew drive out to Moab, you can sit and take a nap every other time Drew has to fuel. (Note: The 7.5 GM rear used different pinion bearings in 1979-80 vs. the 81-up axles, so you want to make sure that the old bearings match up to your new pinion bearings). 8-Inch Ford Rear End Torque Specifications. It also uses a 10 5/8-inch irregular-shaped cover. Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. I have seen street 12 bolts that . The pinion nut needs to be torqued to 250 ft/lbs. Additionally, it increases load capacity because it prevents misalignment due to vibration or thermal expansion of components. Call 800.979.0122, 7am-10pm, everyday. 8-11 in/lbs for broken in bearings is acceptable. Therefore when dealing with these types of sleeves it's important to make sure they are installed correctly so as not to compromise its integrity or longevity. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Is a GM 10 Bolt rear end good? Upgrade your cam, intake, headers, stall converter, and the list goes on from there. Set the preload carefully (see "Set Up Specifications") so that the bearings will have a long life. The more torque produced, the less energy needed to move the car forward. Date and location of manufacture are stamped in the axle tube, and this table deciphers the code. JavaScript is disabled. 4.replace seal. Try our Differential Gear Calculator. If you're just starting out your adventure with single speed or fixed gear bikes then it's best to opt for ratios around 2.7-2.8 as they are easier on your legs and can help build up strength gradually as you continue cycling further and faster each time. 2023 Power Automedia. Here's a link to when I did mine. . carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. With this pinion nut, you can rest assured that your vehicle will be ready for whatever terrain comes its way! The pinion diameter is 1.438 inches, and has 25 splines. If i missed any thing PLEASE tell me. We have your differential parts in stock ready to ship today. 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. Sometimes, you need to push yourself. Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). if it is under twents hold the yoke with a pipe wrench and tighten just a little at at time till the torque wrench reads a constant 20 inch pounds for the revolutions. When looking at the housing from the rear, an 8.5 will have two squared off chunks of casting hanging on each side near the bottom of the differential.