9 inch diff backlash book

If you have new axle shafts, the studs are not typically installed. Hold the pinion yoke and rotate the ring gear back and forth. Housings 9 inch diff parts currie enterprises 9 diff. Find sa design ford differentials how to rebuild the 8. The 9inch ford rearend is the strongest rearend out thereits. Part of our usa standard gear product unboxing series. Pinion checking dimension and backlash are a good place to start, but the contact pattern is the key to a quiet, durable gear set installation. High contact pattern is concentrated at the crown of the drive gear tooth. Filthy motorsports carries a wide range of parts, gears, and upgrades for the ford 8 axle including ring and pinion sets, axle rebuilt kits and bearings, differential covers, upgraded axle shafts, heavy duty ujoints, oil, and more. This tech tip is from the full book, ford differentials. Feb 18, 2017 7 the 9 inch fords adjuster nuts make setting ringgear backlash easy. How to set up ring and pinion rear gear set swap ford 9. The proper preload can be added closer to final assembly.

Strange engineering drag racing axles, ford 9 inch rear. Differential setup specifications west coast differentials. West coast differentials stocks a complete line of light duty axle parts for chevrolet, chrysler, dana, ford, gm, jeep and toyota and more. First, set the backlash using only light carrier bearing preload. Ford 9 inch clutchstyle posi differential third members. The nut would come loose every stage and they break gears almost every rally. Over the years we have gathered information from gleason gear design manuals, dana spicer instruction manuals, technical bulletins. It is a limited slip when disengaged and a full locker when engaged. Autorestomod manic mechanic gasoline media 9,283 views 20. Replacing a differential carrier, changing bearings or a ring and pinion can be a challenging process.

At this point i tried to measure the backlash i was having problems with the dial indicator mount and the best reading i got was over. How to set up your rear gear correctly racingjunk news. Ford 8 axle parts, gears, and upgrades drivetrain shop. The following table contains the proper specifications for all popular axles. If a crush collar is used to set bearing preload, do not use until you have established pinion depth and backlash and you are satisfied with the ring gear and pinion pattern. For a comprehensive guide on this entire subject you can visit this link. The 9plus model is made of premium grade forming steel with a slightly thicker gauge of steel for increased strength and rigidity. The first is that the cutter path for face hobbing does not clear the straddle mount pinion on the 9inchstyle pinion head. Ford 9 axles tapered wheel bearings ford 9 axles sealed ball wheel bearing complete strange 60 rearend. Differential specialty tools having the right tool for the job can save both time and money when working on differentials. And installation instructions west coast differentials. Built from 1957 to 1986, the 9inch ford differential is used in a huge range of. Sep 18, 2014 the pinion was bolted into the housing without any shims and a dialindicator was set up to set the backlash. Good bookthe part numbers and listings are worth the price.

The superior quality of richmond performance driveline products is a result of continual research and development, outstanding design and state. It may sound silly, but there are many things to consider and lots of data. Once backlash and carrier bearing preload is set, then you will want to do a pattern check to see where the tooth contact is, desired is in the middle and lower on the tooth. We learn the process of rebuilding a 9 inch ford rearend from the guys at currie enterprises, using the rearend off our project 1969 ford f100. Move the pinion deeper in towards the differential carrier add pinion shim. So setting the back lash should result in the correct bearing preload.

There are two reasons that the 9 inch gears are never face hobbed. Randys carries a full line of differential specialty tools such as bearing pullers, housing spreaders, setup bearings, shim drivers and more. The first is that the cutter path for face hobbing does not clear the straddle mount pinion on the 9 inch style pinion head. Final backlash and carrier bearing preload adjustments. For over 80 years, the double diamond has signified the highest quality gears in the racing industry. This partsbookstyle exploded view of a ford 9inch third member. Unfortunately, most of you are going to have to do it the hard way, but just in. Differential work requires a few special tools to do the job properly. And others tell me run the side adjusters up snug, then after pattern and backlash are set, tighten side adjusters one more hole. Picture using a socket with an extension to remove these. Mar 24, 2015 the most commonly known rears with this type of carrier adjustment are the chrysler 7. This is the same type of backlash or clearance that we will check when setting up the hypoid gears in chapter 6.

Could that be the cause of this noise only on acceleration. The ford 9 inch rear end also has the widest variety of ratios on the market, particularly in the 3. On a 9 you cant get to a couple of the lower ones, the pinion housing hangs down and blocks them. Diy ford ford axle ring and pinion assembly how to guide. Pinion depth how close the pinion is to the ring gear, backlash how. The diff carrier was changed so maybe it wasnt properly set. Some books give exact specifications of how much preload to add to the.

Ford 9, limited slip differential type, 10 yoke ujoint series, standard ring gear weight. The book has a howto section for disassembling the rearend, identifying worn ring and pinion gears, and other damage or wear. Ensure that you have everything you need before working. Competition contact pattern concentrated just up from the toe covering to 12 of the tooth. Removing a minispool from a ford 9 inch differential. Differential installation instructions west coast differentials. Mar 19, 2015 if the clutches are worn, the side gears are allowed to move farther outboard and the gears have more backlash or clearance between the teeth. Feb 11, 2016 how to change gears and add a limited slip to a ford 9 inch duration. Adjusting it to just right for a long life and quiet operation is the most difficult part of the repair. Specialty tools for differential work randys worldwide. To measure ring and pinion backlash, position a dial indicator stem on one of the ring gear teeth. Clip taken from badshoes how to rebuild the ford 9 rear end dvd. This rebuild was performed on a 2006 f150 crew cab 4x4 with a 9.

Ford 9 inch, 12 bolt, s60 dana 60 maximize gear life. At west coast differentials, we have been diagnosing, repairing and upgrading axles and differentials since 1982. For a comprehensive guide on this entire subject you. How to build a 9 inch ford rear differential when it comes to rear differentials, the 9 inch ford reigns supreme. Ford 8 and 9 inch pinion depth is regulated by shims between the pinion support and chuck or center section. The ford 9 inch pinion is mounted lower in the carrier and has the greatest hypoid offset, which causes it to consume more power to drive it than the dana 60 or gm 12bolt. This larger offset hypoid distance between ringgear and piniongear. For info on where to buy the complete three hour repair dvd or digital.

Ring and pinion gear set up specs torque and backlash. Paint a contact solution or prussion blue on the face of the teeth, apply resistance on the ring gear and rotate the pinion gear until you have completed one full. Ford 9 inch torque specs ford 9 torque specs strange. See my other cartech book, highperformance differentials, axles and drivelines, for more details on both types. This is a instructional video on how to rebuild a ford 8 inch rear end in a garage with limited tools. I measured the thing 9 ways to sunday and feel i got the settings as best as i could by the book numbers. The ends are precision machined to accept a 3inch o.

Differential this rebuild was performed on a 2006 f150 crew cab 4. In addition, the book provides a comprehensive 9inch identification chart to ensure readers properly identify the model and specifics of the differential. Kit installation instructions please read completely before installation t his installation guide was written to provide the novice and professional with easy guidelines for differential setup. Then a friend who crews on an escort rally car was telling me about the diff failures every rally. The dana 60 has so much mass it too consumes a lot of power to drive although many say it feels slightly less than a 9 inch ford. When setting the pinion bearing preload on a crush sleeve design differential, it is. Backlash is the amount of space between the ring and the pinion, and is adjusted by moving the ring gear towards less backlash or away more backlash from the pinion. The most commonly known rears with this type of carrier adjustment are the chrysler 7.

For these you have to use an openstyle wrench and your judgment on the correct feel of the final torque. Nov 24, 2014 we learn the process of rebuilding a 9 inch ford rearend from the guys at currie enterprises, using the rearend off our project 1969 ford f100. If a pattern is heavy toe subtract shims, see illustration d. The following are recommended differential setup specifications for various differentials. Oct 23, 2006 ford 8 8 rear end vs 8 and 9 inch rear axles which is best for your classic ford episode 46 manic me duration. Complete offroad manufactures the yt sa01 seal press tool and the yt yh01 yoke holder tool, both of which make the gear installers life better, and both of which are 100% usa made, assembled, and packaged. Start by lifting the rear differential off the ground and safely supporting it. The differential was full of metal particles and burnt gear oil. Free shipping 485 summit bucks 101 manufacturer rebates 16 catalog quick order. To install your ring and pinion gears andor differential correctly, it is critical to torque your bolts and set your preload and backlash correctly.

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. Measuring differential pinion depth most differential duration. Fabricated rearend axle housing kit for ford 9 inch, 54 in. This tech tip is from the full book, corvette c3 19681982. If ring pinion and differential are to be reused, mark ring gear so it can be replaced in the exact spot it was. Use axle shaft inserted into one end of differential to aid in removing ring gear bolts. Set up bearings help with quick and easy set up, and we carry. It is known as one of the most popular axles in automotive history. There are two reasons that the 9inch gears are never face hobbed. Find richmond gear ring and pinion gears with ford 9 in. Of course, one telltale sign that you have a 9 inch axle is that the bottom thirdmember nuts cannot be accessed with a socket.

It also covers axle identification, inspecting and purchasing axles, differential teardown, ring pinion gear removal, drive axle choices, and more. Ford improved tooth contact of the ford 9 inch gears by locating its pinion gear lower on the ring gear. Motive gear performance automotive gearing and axles. Check the backlash by mounting a dial indicator to the housing with the plunger set perpendicular to the ring gear teeth. These instructions are intended to guide you through the set up process of a 9 ford ring and pinion in order to obtain the correct gear tooth contact pattern.

For more than 50 years, strange engineering has become a household word among racers and crew chiefs in the drag racing industry by supplying. Rebuild a ford 89 inch rear end in a garage youtube. Were confident we can help with your diagnosis, and we can also provide you with the parts needed to fix it. The diff comes with a small bearing housing, axles, and disc brakes out of xb. Filthy motorsports carries a wide range of parts, gears, and upgrades for the ford 9 inch axle including ring and pinion sets, axle rebuilt kits and bearings, differential covers, upgraded axle shafts, heavy duty ujoints, oil, and more. Verify whether all new parts match the application and parts invoice. Next, check the pinion depth by way of the contact pattern. It was introduced in 1957 model year cars and ended production in 1986, having been phased out in favor of the ford 8. There are also differential tools that make the job quicker and easier. There are, however, two ways to set pinion depth, neither of which varies by manufacturer. While many new 9 gears are now manufactured for clearance, many 9 ford ring gears require modification to clear the pinion pilot. If a pattern is heavy heel add shims, see illustration e.

Long and short 28 spline cuttofit with bearing kit, fits ford 9 inch. You can purchase high quality ring and pinion sets in various ratios, high quality rear end bearing overhaul kits including pinion bearings, pinion seal, crush sleeve, pinion nut, shims, ring gear bolts, marking compound and gasket. If you use an existing housing, position it rightside up brakeline clip toward top on 8 34 and ford 9 housings and verify that. I used to only do it with the drag race 9 inch diffs because you can buy kit for it. Look at the lower nuts that hold the carrier pumpkin or diff head in the housing. Give our tech and sales experts a call at 800 5100950 and well be happy to help. Without backlash, the ring and pinion teeth can jam into each other and fail in a very short period of time.

If differential is to be replacedrebuilt or new gearset is to be installed, remove ring gear bolts, tap ring gear off with plastic hammer. Eaton castiron differential housings were installed on 19681979 sharks. The electrac is the new detroit electric selectable locker. Richmond is the leading manufacturer of professional quality, hiperformance ring and pinion sets.