pinion nut torque specs gm 10 bolt

When it comes to Chevrolet rearends, its the 12-bolt that seems to get all the accolades. ALL72156. 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. 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. Additionally, vehicles with higher torque have better control over their handling due to stronger low-end acceleration which makes them safer on roads and highways. The 8.5-inch and 8.6-inch 10-bolt rears are stout and effective differentials that can handle more power than either the 7.5 or 8.2-inch rears. By doing this, it allows for the desired amount of pressure or preload to be applied on these bearings so they are able to work in harmony with each other within their particular drivetrain system. The GM 8.5" 10 Bolt axle, also known as the GM 8.6" axle or GM 10-Bolt, is available in many front and rear axle . This essential part is designed for use on vehicles with a 1 1/4 inch socket and 7/8 x 14 thread that can be found in many common automotive applications such as differential covers, yokes, and axle shafts. Our LS swap adapter kits make it easy! For reference use at own risk. Peter - I'm retired but work part time as a pain in the ass. GM 8.6" differentials can be installed in a GM 8.5" axle with the proper conversion bearings. Looking for a driveshaft for your 67-72 C10? That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. While engine power is an indicator of a vehicle's ability to accelerate quickly and reach high top speeds, torque is an indication of how efficiently it can move. Oct 20, 2011. Max Ellery's Land Cruiser Repair Manual 1969-1990 (FJ & RJ) Differential cap bolt torque: 90 ft*lb. 1. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. 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. Axle Retainer Plate Nuts: 3/8" Grade 8 - 45 ft lbs. This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. Just get a couple sacrificial pinion bearings and open them up a little so you don't have to press them on and off the pinion and add/remove shims until you get the correct preload shown on page 2 of the set up manual. Only 1 nut, it all depends on if your using a new crush collar or not and if your just swapping out the pinion yoke or a full rebuild. Mine is leaking. The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. 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. (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). Use oil on the pinion nut washer surface during all assemblies . It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . Good luck finding one of these, however, as they are very popular among performance enthusiasts. An important step I like to take is to assemble the pinion and differential case without the crush sleeve or the new pinion nut. The "feel" people are way more experienced that you or I so the top one is re-commended. It was used in different models by all GM divisions with the exception of Cadillac. 8 to 11 in-lbs. How a GM 10-Bolt Differential Goes Bad. GM 8.5" 10 Bolt / Ring & Pinion Gear Set w/ Master Bearing . When compressing the crush sleeve, many guys use an impact wrench and end up crushing it too far, ruining the sleeve. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. Data is accurate to the best of our knowledge and is offered as-is with no guarantee. . I have been taking it to ~250-300 ft lbs. Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. Save Share. Then after getting the proper gear patterns you put the new crush sleeve and seal in place and tighten the pinion nut to force the crush sleeve. With the pinion bearing properly lubricated, increase or decrease . I like to slowly tighten the new pinion nut until I take up all of the front to back free play. Sometimes, pinion bearing preload can be a tricky procedure. 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. While deciding on the ideal gear ratio for your bike, it's important to consider that a lower value will provide more comfortable pedaling, as you'll be able to spin the pedals at a higher cadence. 1/2" x all lengths 100-110 ft lb. to do this. Zone 1.5 BL, 22x12s, California delete, Detroit TrueTrac, etc. The Fora platform includes forum software by XenForo. Backlash arises when two gear teeth mesh together in order to transmit power from one shaft to another; the teeth need some play to avoid jamming and ensure smooth operation. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. This technology is particularly advantageous in improving vehicle handling and traction under all types of driving conditions, from wet roadways to tight turns. If you are installing an axle and need to know the torque specs, it is important to first understand what torque is. 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. If it takes a 5/16-inch wrench to remove it, its an 8.5. 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. The inch pound rating is the force required to turn the pinion after the crush sleeve has been crushed. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 12 Bolt Rear Axle Torque Specs. What is the gear ratio on a 10 bolt rear end? The 12-bolt is generally considered to be the stronger of the two rear axles. The oval-shaped cover measures 8 5/16 inches by 10 9/16 inches. 3/8" x all lengths 45-50 ft lb. . 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 . A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. . Therefore, when building a performance car or truck that will be subjected to higher than normal stresses and torque loads, such as those produced by high horse power engines or increased traction created by sticky drag racing tires, it may be beneficial to choose a 12-bolt instead of a 10-bolt axle assembly in order to ensure maximum strength and reliability. TORQUE SPECIFICATIONS. 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. If you're looking to get the most out of your pickup truck, you may want to consider changing the gear ratios. When working on the assembly of a differential, there are two methods for adjusting the pinion depth. It is estimated that this specific axle saw use on over 11 million vehicles during its reign of production making it one of the most popular axles ever created by GM for their consumer market line up. The specified preload needs to be obtained by carefully crushing the spacer with just enough force from turning the pinion nut in order for it not to be too loose or too tight, as either one can cause serious damage if done incorrectly. The OEM pinion nut is 1 1/4 inches. 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. There is a difference, but you cant see it unless you set both units on their side, and then measure the distance from that surface to the face where the ring gear attaches. Next remove the nut and change the seal. On the other hand, if your backlash is too wide you will need to adjust by moving the carrier towards the pinion with a similar measurement technique. I got the price for the seal, and it is near $9. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. I thought the pinion nut would be more like 50-75 FOOT pounds? Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. for new bearings. This is zero backlash. If i missed any thing PLEASE tell me. In either case, it is important that this critical adjustment be performed correctly in order to avoid costly repairs or replacements down the line. We talked to a few of our in-house race experts about ways to make this racing season your best one yet! 5. put back together and tight pinion nut to specified torque. CRAWLPEDIA Off-Road Encyclopedia. tighten the nut down till its snug and put on your torque wrench and turn it about 3 revolutions. I am also replacing all the bearings on my son's 97 Chevy rear end. I used an 18" breaker bar with a 2 foot pipe on the end of it in order . The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. 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. For a better experience, please enable JavaScript in your browser before proceeding. First I measured the old crush sleeve as a starting point. on old bearings. The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. It is important to follow the instructions that came with your differential cover, as torque specifications can vary drastically depending on the material and grade of fastener used as well as the material of the diff cover itself. Not only has the 10-bolt rearend proved its worth in high-performance, high-horsepower applications, but it has also been found to be a great unit for street/strip cars. Oct 29, 2001.

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