Setting up diff backlash book

If you have too much backlash, you want to add side carrier shims to the drivers side and remove them from the passenger side. Make sure to remove the old pinion shim as you will reuse it when setting up the new pinion depth. A slight helix or twist is on the pinion splines to take up any backlash. Differential measurements and adjustments several measurements and adjustments are made when assembling a differential. Rebuilding an 8 34 489 sure grip differential for b. The answer is to either put up with it, get a better sh diff, or get a properly rebuilt unit upgrade. Feb 11, 2016 how to set up ring and pinion rear gear set ford 9 overview tutorial tech installation instructions swap. While this article focuses specifically on the gm 8. Ill try to hit the main steps and provide some details in this thread.

Setting backlash is best done out of the car but in a pinch can be done with tranny in the car. Setting up diff defender forum lr4x4 the land rover forum. May 11, 2012 this tech tip will speak specifically to setting up the differential, and specifically the back lash, in a midget converting to 3. This allows you to put the pinion gear in, set the pinion bearing preload, set the backlash and then run a contact pattern without the chance of compressing. The part number should be str520 which is a british leyland special tuning part number. Setting up diff defender forum lr4x4 the land rover. Setting up the front diff gears on this truck really isnt bad, but its a bit of a daunting task. I left one side with the adjuster nut and bearing cap pre set in the factory position so i know one side is right, but i disassembled the other side, and marked the point where the adjuster nut it is held in place so i could put it back together the same way later.

Whatever progress feminism has recently made, faludis words today seem prophetic. There is a certain amount ofmystery in setting up a set of gears, but with a little time and care, acapable enthusiast can roll his or her own. When installing the carrier, the same adjusters or shims that are used to adjust the backlash are also used to set the carrier bearing preload. Leave a rating or a comment below, and get instant reply notification via email. Set up side bearing load and backlash per oems service manual. Hold the pinion in place and rock the ring gear back and forth and read the measurement. How to install a chevy and gm axle assembly and differential. The preload is the actual load on the support bearings. Within the 144 pages of this softcover book is everything you need. How to set differential backlash may 11, 2012 this tech tip will speak specifically to setting up the differential, and specifically the back lash, in a midget converting to 3.

Get your dial indicator set up on a good surface with as straight of an angle as possible to a tooth to read backlash and start reducing the backlash to. As an added reference, speedway motors also offers a great book from. What matters is the measurement you came up with the new bearings and diff. I downloaded instructions from randys ring and pinion, but i have a question about differential shims. My guess will be a combination of wear miles and tired bearings etc. To get the rear set up properly, you will need some tools specifically, a dialindicator with a magnetic base and some calipers. Once i can find this 0 backlash position i assume setting the correct backlash and preload will be easy.

It can be defined as the maximum distance or angle through which any part of a mechanical system may be moved in one direction without applying appreciable force or motion to the next part in mechanical sequence. Using a fine file, remove any burrs on the rear of the ring gear and carrier mounting surface. Final backlash and carrier bearing preload adjustments. Be sure to watch our differential side gear backlash video for complete setup information. Differential setup tool kit this tool kit includes some of our most popular differential setup tools at a. If the pattern needs to be moved heeltotoe or toetoheel, adjust backlash only. The holding fixture used in this video is the otc 7020. Plus, you also add the necessary bearings, seals, and shims. The plan here was to upgrade the 10bolt in our pal larry richards 175mph 87 monte carlo. A solid spacer is an alternative to a crush sleeve. I just picked it up due to the cute cover and the intriguing synopsis, and i didnt expected much from it either. I have just done a search on driveline backlash and to me it seems that alot of people are saying that alot of backlash is normal due to the many gears involved in the gearbox, transfer case center diff.

Now the diff is just the standard open center for the e series. Do you have a question or comment about this article. Read up on gm 10 bolt ring and pinion installation instructions. Sure, setting up ring and pinion gears can seem challenging, but it really is simple enough that anyone can do itif theyre willing to pay attention to. Setting differential preload by the book for a new limited. It is better to locate the diff farther out and then creep up to the pinion.

Different backlash pattern markingscorrect and incorrect. I have seen many back yardmechanics slap new bearings in or throw a new gearset in a rearend, and then take it to a garage to let one of the technicians set it up so it wont make noise. This will give you an idea how to locate the differential so you can arrive at a decent backlash. Hey guys, had abit of a look around on the net with no luck. The following table contains the proper specifications for all popular axles. Ring and pinion gear set up specs torque and backlash. Setting backlash is done using a dial indicator to measure the free movement of the ring gear. Replacing all parts every time a differential is worked on is not only unnecessary, but is ridiculous. How to set up ring and pinion rear gear set ford 9 overview tutorial tech installation instructions swap. After that we removed the old bearings and cleaned all the parts up in the solvent tank.

Ring and pinion gears are designed to be set up and run with exact tolerances. A ringtopinion marriage means smooth lapping of the gear teeth. If you are repairing or rebuilding a ford differential, this is the book for you. This tech tip is from the full book, ford differentials. Now this is a two part task, setting the carrier crush and setting the pinion back lash, first the crush.

Rebuild an 8inch differential mustang monthly magazine. Only then can you think about setting the bearing preloads. Ring and pinion gears are designed to be setup and run with exact tolerances. Dont worry too much about setting up a text book contact pattern as doing so may move the contact contact portion to a different part of the tooth, and could cause a quiet diff to become a noisey one. Doing so places enormous stress on the differential carrier and gear teeth.

Backlash could be many things, from just normal wear to a diffs that have been set wrong on installation, to bearings. Differential setup tool kit this tool kit includes some of our most popular differential setup tools at a greatly reduced price. Can i put the shims between the housing and the carrier bearing. This tech tip will speak specifically to setting up the differential, and specifically the back lash, in a midget converting to 3.

Thats one of the reasons i started to write a book on quick changes. You set a temporary preload on the bearings to set the ring gear backlash using minimal shims. Mar 24, 2015 different backlash pattern markingscorrect and incorrect. Once you give everything a thorough inspection you can begin the reassembly process. Once pinion depth has been set, a final backlash setting can be achieved by adjusting the location of the differential and ring gear. Differential setup tool kit diffsetupkit complete offroad. All too often the average enthusiast installs a killer engine into his chevy only to find that the car doesnt accelerate like it should. It was really a thought provoking story and related to cyber bullying. Massive pinion flange holding tool holder yoke wrench made usa compatible with jeep ring rear end axle nut seal 8. Setting backlash and preload on rear diff after adding.

In mechanical engineering, backlash, sometimes called lash or play, is a clearance or lost motion in a mechanism caused by gaps between the parts. Jackson paints the gear teeth with a lapping compound designed to show tooth. My eb has a shirtload of backlash in the diff and at slow speeds this is a bit annoying as you can feel it take up and somewhat bunnyhop. The shim i took out is no longer needed, unless i put the old diff back in with the same exact bearings. If you are reusing the same ring and pinion gears and differential carrier, reassembly is relatively simple because the mesh pattern does. In this case the yukon tool would not remove the pinion bearing some pinions you can use it but not on this 9. Setting up the axles ring and pinion gears its one of those jobs that even the most. Measuring differential pinion depth most differential duration. Sep 21, 2014 if only i could afford peggage on my rear diff. Nov 26, 2007 it is a good idea to have a set of set up bearings and you can actually use a good set of used bearings if you want to. Simply i just liked this book but i didnt loved it that much.

How to set up your rear gear correctly racingjunk news. This is true but i disagree that this is what people can feel when checking there backlash. Backlash is the amount of play the ring gear can move before the pinion moves. Install solid spacer continued push the crush sleeve in from the front of the case. The adjustment with the diff bearing carriers is for setting the backlash and the bearing preload on the differential. A typical set of gears comes with a marking compound.

Anyways, hidden in here between the ramblings is probably some decent information and some specs that you should try to hit. With this design, ratiochanges can be made with relative ease and speed. Nov 15, 2011 check the backlash using this dial indicator. Jul 01, 2002 all too often the average enthusiast installs a killer engine into his chevy only to find that the car doesnt accelerate like it should.

Next install the differential carrier, this is the part that the ring gear is bolted to. In most cases, when rebuilding a differential back to stock you can reuse the original pinion shim without having to measure for pinion depth. Apr 21, 2011 be sure to watch our differential side gear backlash video for complete setup information. How to set up your rear gear correctly march 24, 2015 randy bolig drag race 101, howto and tech tips, tech tips 0. Differentials is a new 408 page book on the science and practical aspects of repairing or. To install your ring and pinion gears andor differential correctly, it is critical to torque your bolts and set your preload and backlash correctly. This is just a matter of carefully setting the partially assembled casting on the pinion. Got new ring and pinion in my 970 manual trans and i. Oct 08, 2018 this will ensure that your backlash is correct without having to swap the shims. How to rebuild gears in chevy and gm differentials. Setting up a differential is probably one of the most underrated jobs that a mechanic can tackle. These are used to check the backlash of the gears and the thickness of the shims respectively. Discussion in the hokey ass message board started by hemideuce, nov 26, 2007.

Mar 31, 2015 while this article focuses specifically on the gm 8. So the difference between the one i put in for he lsd and the oem diff is not relevant. Setting backlash and preload on rear diff after adding lockerspoolwelding. The inner bearing is a presson part, so you need a slipfit bearing as a standin for setting up the gears. With any automotive repair job, whether youre dealing with used or new components, its critical to first clean those parts with solvent. You already have quality parts if you bought a sierra kit. You can expect many years and many miles of dependable use from your differential if it is set up properly and if you use only top quality parts.

Thirdmember assembly this is where you combine the assembled differential with the gear case and hypoid gears. One of the best performance modifications that can be made to a street machine is a change in rear gears. Final check of backlash, contact pattern, and preload. Hi guys just need some advice on setting the backlash on my front diff. Clamp the tool in the bench vise and set the differential in place. When setting up measuring and adjusting a differential. Install differential case assembly with ring gear into axle. You need to change the pinion depth and backlash for those applications. I have seen many mechanics slap new bearings in or throw a new gearset in a rearend, and then take it to our shop to let one of our technicians set it up so it wont make noise. I left one side with the adjuster nut and bearing cap pre set in the factory position so i know one side is right, but i disassembled the other side, and marked the point where the adjuster nut it is held in place so i. Randys write up mentions that on some dana series axles this setup is fine.

When it was first published, backlash made headlines for puncturing such favorite media myths as the infertility epidemic and the man shortage, myths that defied statistical realities. Setting the backlash and pinion depth dictated by the contact pattern means installing and removing the carrier and pinion. I will be setting up gears in my front dana 44 within the next few weeks. Differential repair and installation instructions please read completely before beginning. May 07, 2015 because when the truth starts to come together, the backlash is even more devastating than anyone could have ever imagined. The axle assembly work begins when the differential components are fully disassembled, cleaned, and ready for reinstallation. Differential setup tool kit diffsetupkit this tool kit includes some of our most popular differential setup tools at a greatly reduced price. Yay for me, i marked up all the alignment marks and it. How to set up ring and pinion rear gear set swap ford 9.

These willfully fictitious media campaigns added up to an antifeminist backlash. Setting differential preload by the book for a new limited slip differential. Setup side bearing load and backlash per oems service manual. Thanks john for your help, but i think we are on crossed purposes here, i already have the axle shafts out and also the diff unit, no problem there, the deal here is the planet gear carrier and bearings, removing that from the diff unit, refitting and setting. What you should focus on is putting backlash to where it. Been researching on how to set preload of the side carrier bearings and set backlash. This compound is used to show what the pattern actually is on the ring gear while adjusting the backlash. In terms of setting the ring and pinion up properly, eric swarr says the companys approach is much different from that chosen for our application when it comes to highhorsepower drag cars, and for those racers who compete on the road course.