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Tonawanda, Omaha, Boynton Beach, Lake Worth, FL, (You must log in or sign up to reply here. Copyright © 1995-2020 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. When setting up the positioning of a ring and pinion in any rear end, there are only two settings that need to be done/measured correctly to ensure proper gear setup and long gear life. This plate enables you to measure the centerline of the rear end without installing the pinion shaft.Made from 14ga stainless steel this tool will pay dividends from the first use. I agree to receive emails from RacingJunk.com. There exist specialized tools for measuring pinion depth, but they are expensive, aren’t necessary, and are only used to calculate a starting point – final proof always lies in the contact pattern. of that bearing will give you the axle center line measurement for your housing Gets you close enough for the paint Going from 3.73 to 5.13. Tighten the pinion nut enough to take up the slack in the bearings. If your rear end does not use adjusters, then you need to adjust backlash by using shims. indicates a pinion depth of 2.983” (3.335” minus 0.352” = 2.983”). World's #1 Racing & Performance Classifieds, March 24, 2015 Once you have the gears properly set, you might be wondering, “Do I really need to break in my new gears?” The greatest damage to new gears can occur when running for the first ten minutes or so during the first 500 miles when the oil is very hot. Ran into a problem when putting the pinion in. The purpose of backlash is to prevent the gears from binding. This is what I use, it's just a piece of flat bar bolted across the bearing split. The proper pinion depth for the NEW pinion will be etched on it. In this image, the pinion depth is too deep (too far into the housing) and needs more shims. For Ford applications, put 0.030" in and run a pattern For 8" Toy stuff, start with about 0.088 and run a pattern. If the temperature of the oil and gears gets hot enough to change the molecular structure, it will soften the tooth surface instead of hardening it. The service manual says to use several GM tools for this. Since we’re fairly certain that most DIYers don’t have a pinion-depth gauge, here’s how to set the pinion depth without using one. If you are changing the gears, the pinion depth needs to be set. With the time you take to (hopefully) make an accurate gage, you can set-up several axles without it. Notice how the wear pattern is almost perfect within the middle of the tooth. I understand that I can unsubscribe at any time. Universal pinion setting tool so you can measure pinion depth of most automobiles and trucks. All we will be focusing on at this time is the actual setting of the gears. Randy Bolig 1963 Dodge 330 Sedan Super Pro Race Car!! The rest you have to learn yourself The end result is your pinion depth. It will not be exactly the same as the old one. However, we do want you to understand what it takes to actually “set up” the gears so you can do the install yourself. The factory provides the pinion depth specs. It doesn't seem right that I have to use almost a quarter inch of shims. This gives me a reference as to the position of the pinion before repair. The most commonly known rears with this type of carrier adjustment are the Chrysler 7.25, 8.25, 8.75, 9.25, Ford 9 inch, and GM’s 8.25 inch. This isn’t about the install of ring and pinion gears. How to use the Deluxe Pinion Depth Checker from T&D Machine Products (Part #11001) to measure pinion depth on all stand alone differentials that are not part of a transaxle, from the early 1960’s to today’s differentials… That’s why I allow some area for the feeler gauges. On most rear ends this will require a bearing puller such as (G2 80 … Any heavy use or overloading while the oil is extremely hot will cause it to break down and allow irreversible damage to the ring and pinion. Just make sure the pinion pattern is set right on the ring gear. Mount a smooth straight plate across the flat rear cover surface, measure from plate to O.D. The factory pinion depth shim is under the bearing between the bearing and the pinion head. OEM pinion gear mounting distance speci˜cations are listed below. If you take it easy on a new ring and pinion, and keep it full of high-quality oil, it will last a lot longer. If using shims: Adding shims on the ring-gear’s smooth side of the carrier moves the ring-gear closer to the pinion, causing the teeth to mesh tighter, decreasing the amount the backlash. Hmmm, Dana 30 pinion depth. Different backlash pattern markings—correct and incorrect. The Ratech pinion depth tool is unlike the cheaper models you may have seen in the past. 3) subtract the PINION HEAD THICKNESS (PHI) from the MASTER HOUSING DIMENSION (MHD). Discussion in 'The Hokey Ass Message Board' started by 59Apachegail, Oct 3, 2020. If it is to high or to low or too deep, etc., that tells you how much and where you need to adjust the pinion depth. I have had good luck using depth end of a 6" dial calipers. * Pinion depth (how close the pinion is to the ring gear) Sure, setting up ring and pinion gears can seem challenging, but it really is simple enough that anyone can do it—If they’re willing to pay attention to proper procedures. The number obtained is the PINION DEPTH CPD). 1, Drag Race 101: Proper rear-end gear set up. I always start off installing the original shim pack with the new bearings/pinion and take it from there. Notify me of follow-up comments by email. It’s time to VOTE for Round Three of the RacingJunk September Drag Duel Showdown, C-Tech Offers Customizable Cabinets for Your Trailer, Shop and Garage, Head Games: Inside The Brodix BB-3 XTRA Lineup Part 4, Getting You (and Your Car) Ready for Drag Week. Narrated by Adrian Pendegrass, this video explains in detail how to set up a differential using our (Part# POW356000) pinion depth setter. of the carrier bearing (with out the cap) adding 1/2 the O.D. Make sure you use only real gear marking compound (available from GM as part # 1052351), as other marking substances are difficult to read. We aren’t explaining how to install the gears, and different rears use different ways to adjust pinion depth (crush sleeve or spacers). Compare Speedway Steel Drive Shaft. 2. GM 10- and 12-bolt units use shims behind the inner pinion bearing (the large bearing inside the case). My initial measurement, with a .021” thick shim installed gave me a reading of 2.462”. The ring gear had a measurement of 2.476” etched on the face. T006 - Pinion Centering Tool Moser introduces its new pinion centering device for the do-it-your-selfers.Narrowing a 9" Ford, GM 12-Bolt Car, Dana 60, 8 3/4" MOPAR, 8.8" Ford or an OLDS/Pontiac just got easier. This play becomes important when the loading and unloading of the gear occurs (acceleration/deceleration). There are many theories about how to read the contact pattern, but I won’t open that can of worms now. Just know that after changing the pinion depth, the pattern should be rechecked using the method we just explained. I screw it real close to the pinion, about .025, and lock it down. Bearing preloads are equally important, but we’ll address those particulars in a later article. 2) Make note of the pinion depth inscribed on your pinion gear. I've been setting up my sterling. 6. Avoid abusive situations for the next 100 miles or so, and then have at it. Adding shims on the other side moves the ring-gear teeth away from the pinion, increasing backlash. The pinion depth gauages are pretty awesome in that you can measure it all ahead of time and put the correct shims in there and it be correct like 95%+ of the time. The GM 9.5 inch is a little different than most, as one side uses shims but the other side has a threaded adjuster. But I make the assumption that the new bearings will position the pinion a little higher. Drive below 60 m.p.h., approximately 15 to 20 miles, then stop and let the differential cool. These indications mean the needle deflected a total of .412 inches (412/1000-inch). Compare Leaf Spring Pinion Angle Shims. Place the pinion setting tool on top of the pinion head with the slot end of the tool in the carrier bearing journal. The best way to set the pinion depth is by reading the contact pattern. I use a rig like Stueees , but I drill and tap the bar and screw a piece of all thread with a lock nut on it. Finding the proper backlash setting can be found in a service manual for the vehicle you are working on. * Backlash (how close the ring gear is to the pinion). Add or subtract shims by placing each shim beneath the pinion gear until the measured pinion depth is equal to the target pinion depth as … Once the pinion depth is properly set, the backlash needs to be adjusted and set. Having checked, the split line has never been more than a few thou off the true centre line on any of the axles I've rebuilt. Fortunately, you don’t have to play the guessing game when it comes to setting the pinion depth. View (23) $19.99 More Info. I also round off the measuring end. 6. To determine the installed pinion depth, you will need to subtract the indicator reading (.412) from the calibrator size (3.375). ... DECO Magnetic Angle Finder Gauge Tool, 4.14 In. 4) NOW, you can set up your rear differential as described in the section "MEASURING PINION DEPTH". Unless other wise instructed, start with the original pinion depth shim. When changing the pinion depth, make large changes (0.005" to 0.015") until the pattern is close. To measure driveshaft angles and U-joint angles, start by lifting the vehicle either on a drive on style vehicle lift, or an axle contact style. I want to rebuild my differential with new ring, pinion, bearings, etc. If your pinion does not have a depth number on it, go to the "OEM GEAR APPLICATIONS" Section to find the pinion depth. Then I measure with feeler gauges. This is shown by the wear pattern on the inside of the teeth. Start with the pinion shim that was on the original pinion … Some rear ends use adjusters that are located next to the differential carrier bearings, and others are adjusted by adding/removing shims. Dealers are supposed to have special tools to measure pinion depth. Normally, the first step is to set the pinion depth using a proper pinion depth tool. Your email address will not be published. These settings are: Since we’re fairly certain that most DIYers don’t have a pinion-depth gauge, here’s how to set the pinion depth without using one. Proform pinion setting tools are used to measure pinion gear depth. By placing various thickness shims on either side of the differential, you can adjust backlash. Just my way. Find Proform Parts 66516 Proform Pinion Setting Tools and get Free Shipping on Orders Over $99 at Summit Racing! Terms of Service. 4. If the contact pattern is towards the flank of the ring gear teeth then the pinion is too close to the ring gear. The difference between the two is .014”, so I knew that by adding .014” to my initial shim thickness of .021” I would need a .035” thick shim under the pinion … Drag Race 101, How-To and Tech Tips, Tech Tips Set in the tail bearing cup and drive in the pinion seal. Next, check the pinion depth by way of the contact pattern. This is because backlash needs to be close to spec in order to get a good pattern reading. I have a pinion depth tool, but almost never use it. Most new gear sets measure pinion depth from the rear surface of the pinion to carrier bore centerline. Setup Without Pinion Depth Setting Tool In order to obtain the correct set up without a pinion depth set ting tool, the following procedure is suggested: a. Mounting distances are provided for many rearends which enables the operator to set up factory gears that are not marked for pinion depth. Amazon's Choice for pinion depth setting tool Calculated Industries 7434 AccuMASTER 2-in 1 Magnetic Digital Level and Angle Finder / Inclinometer / Bevel Gauge, Latest MEMs Technology, Certified IP54 Dust and Water Resistant 3. The head bearing is propped up to show the shim. If there is a + or – marked on the pinion gear, the pinion gear head must be either added or subtracted from the pinion depth. Adjusted Via: Inner pinion shims placed between the housing and the inner pinion-bearing cup. This tool is quick to set up and is ACCURATE. After checking the pattern (see diagram below for proper patterns), you will find that it is usually necessary to adjust the pinion depth again. This rear end uses adjusters (arrow), to reposition the differential, and set backlash. Measuring across the cap parting line is not exactly the center. The right pattern will show that the gears are fully meshing but are not too tight. A typical set of gears comes with a marking compound. Without the right tools you'll probably destroy the larger pinion bearing every time you take it off. Lack of backlash may cause noise, overheating, or seizing and failure of the gears or bearings. There is a .21" difference between the thickness of the old pinion and the new pinion. I have read many articles on doing this but none of them, except the service manual, tells how to measure the pinion depth. For rear ends. Step-2: Set Pinion Bearing at Correct Depth (Special Tool, Save Money) Here the pinion head shim is in place. 1. ). 1. This measurement is recorded in thousandths of an inch, using a dial indicator that is positioned to read from a tooth on the ring-gear. They work on the rear axles of most cars and trucks, and include all necessary hardware. This compound is used to show what the pattern actually is on the ring gear while adjusting the backlash. Once pinion depth has been set, a final backlash setting can be achieved by adjusting the location of the differential and ring gear. The pinion seal actually traps the tail bearing in place, so don’t install the pinion seal without the bearing in place. While Adrian will never win an academy award, he does pass along a great deal of knowledge about various rear end assemblies and buildup techniques. It’s not rocket science. Privacy Policy. The following procedure is generally accepted for breaking in a new gear set. You will also need to reset the backlash each time that the pinion depth is changed. Setting backlash is done using a dial indicator to measure the free movement of the ring gear. The distance to the pinion bearing seat is harder to measure than to the face of the pinion gear. Tech Tip: use only actual gear marking compound (available from Randy’s Ring and Pinion, and many auto parts stores). In my 38+ years, I worked for the primary manufacturer of gear production machinery and have built, helped build or seen built, thousands of axles. Measure the pinion depth at this new point. Diameter. Early GM, Ford 9″, 8.8″ and 7.5″, Chrysler 8 3/4″, Dana and many others. The equation looks like this: 3.375 … In other words, you’re measuring how much you can rotate the ring-gear back-and-forth before it engages the pinion’s teeth. Measure the pinion depth, then add or subtract pinion bearing shims beneath the pinion gear to attain the desired dimension (target depth). Backlash is the play—or how much play there is between your ring and pinion gears. MEASURING PINION DEPTH 1) Carefully remove any sharp edges or burrs from the carrier bearing housing and caps to avoid any inaccu- racy or marring of the hubs. 1. If the two pinion depth measurements are not identical, shim the tool to square it with the pinion and remeasure until both readings are the same. Done correctly it's a one shot deal. It is so much easier doing it on jack stands or on the fixture I built for my engine stand than crawling under a car to set one up if you don't have a hoist to lift the car. That process has been covered ad nauseam everywhere on the Internet. Once the correct pinion depth is established, the pinion bearing preload can be adjusted. Pinion depth gage is used for production, but if you go by the tooth contact bearing & backlash, the gage isn't needed. Mount the head bearing on to the pinion shaft and install in the housing without the pinion seal or crush sleeve. They work by tightening one side and loosening the other side to move the differential sideways. This is a Dana 44, but if IIRC the centre distance on the truck 12 bolt is the same @ 2.625" The car 12 bolt has a different centre distance. With the pinion gear and differential in place, rear-end marking compound in place, and with the bearings only “snug” (just tight enough to eliminate any “play”), check the pinion depth by way of the contact pattern that can be found by the rotation of the pinion against the ring gear. View (26) $9.99 More Info. Adjust the pinion shims to move the pinion gear away from the ring gear centerline (subtract shims; add shims for pinion support designs). Works on GM – 10 & 12 bolts. There are several types of rear ends that use threaded side-adjusters instead of shims—be it a single adjuster or one on both sides of carrier. Master Pinion Depth Setting Kit | SPX Miller Special Tools | 6775 Miller has adapters for Chrysler corporate applications too. Move the dial indicator so it contacts the pinion head approximately 1" from the ˜rst measurement point. do this by measuring the thickness of the pinion gear head and subtracting that measurement from the factory mounting distance measurement. Record the measurement and add or subtract the offset. With the pinion gear and differential in place, rear-end marking compound in place, and with the bearings only “snug” (just tight enough to eliminate any “play”), check the pinion depth by way of the contact pattern that can be found by the rotation of the pinion against … Shims placed between the bearing split shims on the other side moves the ring-gear teeth away from the pinion! Using a dial indicator so it contacts the pinion depth from the pinion seal without the bearing and the how to measure pinion depth without tool... Out the cap ) adding 1/2 the O.D, or seizing and failure of the gears to... Differential carrier bearings, and include all necessary hardware is the pinion seal without right... Necessary hardware, Oct 3, 2020 Shipping on Orders Over $ 99 at Summit Racing depth been... Adjusted and set by using shims a new gear sets measure pinion depth needs to be adjusted rear of. For breaking in a later article 3 ) subtract the pinion depth of most cars trucks! Used to measure pinion gear the gear occurs ( acceleration/deceleration ) work on the face,... Because other marking substances ( like shoe polish ), can be in. ( arrow ), to reposition the differential cool axles without it differential bearings... Head thickness ( PHI ) from the rear surface of the differential carrier bearings, etc journal: Steal stuff... Bearing preload can be found in a service manual says to use a... Ring and pinion gears make large changes ( 0.005 '' to 0.015 '' ) until the actually! Gm tools for this the inside of the carrier bearing journal ) subtract the offset ”! 3 ) subtract the offset correct depth ( Special tool, 4.14 in the slack the. This by measuring the thickness of the ring gear had a measurement of 2.476 ” on... Master HOUSING DIMENSION ( MHD ) within the middle of the tooth depth setting Kit SPX... The position of the ring gear the center of backlash may cause noise overheating... Unloading of the ring gear pinion shims placed between the bearing and the inner pinion-bearing cup I understand I. And lock it down gave me a reference as to the how to measure pinion depth without tool carrier,! Inside of the pinion nut enough to take up the slack in the section `` pinion... Be found in a later article, 8.8″ and 7.5″, Chrysler 8 3/4″ Dana... Factory gears that are located next to the ring gear differential with new ring, pinion bearings! Contacts the pinion seal this gives me a reading of 2.462 ” distance measurement of worms.! Measurement point purpose of backlash is to prevent the gears, the pinion without... To have Special tools to measure pinion depth has been set, the backlash needs to be set and gear... About the install of ring and pinion gears measuring how much play there between! Others are adjusted by adding/removing shims depth is established, the pinion, about,. Axles without it by the wear pattern on the Internet be etched on the.... As the old pinion and the pinion gear depth abusive situations for the next miles. A.21 '' difference between the thickness of the carrier bearing ( with out the cap ) adding 1/2 O.D! Of worms now measurement and add or subtract the offset when putting the pinion head the... Are located next to the ring gear teeth then the pinion seal that I unsubscribe. I can unsubscribe at any time is to prevent the gears are fully meshing but not. ( you must log in or sign up to reply Here Hokey Ass Message Board ' started by 59Apachegail Oct. Dimension ( MHD ) and lock it down notice how the wear pattern is close equally... Unless other wise instructed, start with the time you take to ( how to measure pinion depth without tool ) make note of pinion... Is propped up to show the shim destroy the larger pinion bearing preload can be found in a later.! By reading the contact pattern is almost perfect within the middle of the tooth large bearing inside the case.! Rechecked using the method we just explained that the new pinion the offset start the! When changing the pinion depth, make large changes ( 0.005 '' 0.015. Between the thickness of the teeth, so don ’ t open can... Head with the original pinion depth '' the tooth rear cover surface, measure from plate O.D... Install the pinion depth needs to be set this compound is used to show what the pattern is the... Or sign up to reply Here the teeth the time you take (... The original shim pack with the original pinion depth shim 59Apachegail, 3... Measurement, with a marking compound ( hopefully ) make note of the differential carrier bearings,.. Work by tightening one side and loosening the other side has a threaded adjuster gears! Close to the pinion depth is changed the carrier bearing journal the case ) pinion! We just explained gear set Oct 3, 2020 understand that I have to learn yourself for rear use... Won ’ t install the pinion bearing ( the large bearing inside the case ) head shim under... Depth is properly set, a final backlash setting can be achieved by adjusting location. Found in a service manual for the feeler gauges like this: 3.375 … 1 t have play! The Jalopy journal: Steal our stuff, we 'll kick your teeth in acceleration/deceleration ), increasing backlash )! Differential with new ring, pinion, about.025, and others are by... The same as the old one for the next 100 miles or so, and set factory pinion depth established. Measure the Free movement of the teeth not too tight … 1 use, it just... Pinion seal without the bearing and the inner pinion bearing at correct depth ( Special tool, Money... Is the pinion head with the time you take to ( hopefully ) make an ACCURATE gage, you set-up. Your ring and pinion gears it from there not too tight piece of flat bar bolted the... To carrier bore centerline pattern is set right on the inside of differential... Next to the ring gear teeth then the pinion seal I make assumption. We 'll kick your teeth in Proform Parts 66516 Proform pinion setting tool on top of the differential carrier,. Head and subtracting that measurement from the ˜rst measurement point piece of flat bar bolted across the )... Properly set, a final backlash setting can be achieved by adjusting backlash... Of gears comes with a.021 ” thick shim installed gave me a of... Play becomes important when the loading and unloading of the teeth this play important. The vehicle you are changing the gears or bearings the rest you to! Gm 9.5 inch is a little different than most, as one side and loosening other! Are provided for many rearends which enables the operator to set up your rear differential as described in carrier... At correct depth ( Special tool, 4.14 in about the install of and. Setting the pinion setting tool on top of the teeth unsubscribe at any time on face! The assumption that the gears are fully meshing but are not marked for depth!... DECO Magnetic Angle Finder Gauge tool, but we ’ ll address those in! Across the cap ) adding 1/2 the O.D HOUSING ) and needs more.... Side moves the ring-gear back-and-forth before it engages the pinion depth most cars and trucks the..., ( you must log in or sign up to show what the pattern should be rechecked using method! But almost never use it to rebuild my differential with new ring,,! To measure pinion depth setting Kit | SPX Miller Special tools | 6775 Miller has for... Subtract the offset is propped up to show what the pattern actually is on the face following is! Right on the face won ’ t open that can of worms now carrier bearing ( the large inside... Me a reading of 2.462 ” pinion setting tools and get Free Shipping on Orders Over $ 99 at Racing! About how to read the contact pattern, but almost never use it, Omaha, Boynton,. ) make an ACCURATE gage, you don ’ t open that can of worms now image the! Case )... DECO Magnetic Angle Finder Gauge how to measure pinion depth without tool, Save Money Here! To the ring gear teeth then the pinion bearing at correct depth ( Special tool but. You need to adjust backlash rearends which enables the operator to set and. Dana and many others image, the pinion depth how to measure pinion depth without tool been covered ad nauseam everywhere on the Internet 3.375 1! Dealers are supposed to have Special tools | 6775 Miller has adapters for Chrysler applications. 12-Bolt units use shims behind the inner pinion shims placed between the bearing split and... Inside of the pinion bearing ( the large bearing inside the case ) cap ) adding 1/2 the O.D on. Bearing split 12-bolt units use shims behind the inner pinion shims placed between the and! Described in the section `` measuring pinion depth, make large changes ( 0.005 '' to 0.015 '' until. Depth inscribed on your pinion gear mounting distance speci˜cations are listed below shim pack with the new pinion will focusing. Teeth then the pinion depth has been covered ad nauseam everywhere on the of. Just know that after changing the gears cars and trucks, and all! ( arrow ), to reposition the differential sideways enough to take up the slack in carrier. Has been covered ad nauseam everywhere on the Internet s teeth pattern on the surface! Is done using a proper pinion depth of 2.983 ” ( 3.335 ” 0.352. ’ ll address those particulars in a service manual for the next 100 miles or so and...

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