In other words, you’re measuring how much you can rotate the ring-gear back-and-forth before it engages the pinion’s teeth. This design uses shims between the carrier bearing and the case. Backlash. It also is not making full contact across the gear face length wise while it is a decent amount I would expect a little more, which is why I am wondering if you have the wrong sized pinion or if it is worn out. Drive Side Heel - Coast Side Heel Contact Pattern 2004 Hummer H2 2004 DRIVELINE/AXLE Front Drive Axle - Hummer H2 3. This can distance can be larger than .100” as long as the starter pinion engages properly. To my eye it looks like the pinion is too shallow. Use shims to move the ring gear farther from the pinion gear to increase backlash. 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. The machining striations on the drive surface of the ring gear teeth are still visible (on the actual gear set, if not in the attached picture). 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. Used Gear Sets. the ring gear centerline. If too . If the preload is close and the backlash is too loose, tighten the left adjuster a notch or two until the backlash is correct and the preload is sufficient. Moving the ring gear toward the pinion removes the backlash and moves the contact pattern closer to the toe. This is the opposite of C. The ring gear is too far in toward the pinion. Moving the ring gear away from the pinion increases backlash, and causes the pattern to move out toward the heel of the ring gear. To correct the pattern I do see some non-pattern still at the end of the teeth, but it really looks like the pinion is coming too close to the top of the gear. Learn more about ring gear patterns in our “How The Create & Read Ring Gear Patterns” article. Doing so will eliminate the possibility of a space between the adjuster and the bearing race. Use clean gear oil if white grease is not available. This play becomes important when the loading and unloading of the gear occurs (acceleration/deceleration). Setting up ring and pinions is an exercise in tedium. Add passenger side carrier shims from the drivers side shims carrier. The teeth will not mesh. A contact pattern closer to the gear flank means the pinion is too close to the ring gear. Looks like the pinion is too deep (too close to the ring gear). To correct the pattern, the pinion needs to be moved away from the ring gear so that it is positioned farther away from the ring gear centerline. Returns Initially, set the backlash with very little carrier bearing preload. West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more! I agree to receive emails from RacingJunk.com. Found inside ��� Page 6-27Ring - gear runout test using dial indicator . ... figure 6���28 , too many shims have been used , and the pinion is not reaching far enough into the ring ... The drive pinion gear is positioned with a shim that is too thick. Backlash refers to the amount the ring gear can rotate forward and backward when the pinion gear cannot move. Found inside ��� Page 23... B ) chipped differential gears c ) improper lubrication D ) worn differential gears and thrust washers E ) ring gear adjusted too close to pinion 2. The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. That's my 0.02 Adding shims on the other side moves the ring-gear teeth away from the pinion, increasing backlash. If you are putting a high speed Ring and pinion on a high speed carrier the flange on the carrier will be too close to the pinion thus a thin race and spacer is used on the ring gear side of the carrier and a thick shim stack is used on the pinion side of the carrier to move the flange away from the pinion… This is the proper or desirable pattern. If the pinion is too close, use the housing shaped shim and round shim (Figure 1) in- Backlash is how far away your ring gear is from the pinion. Found insideTechnician A says that excessive toe contact will require that the drive pinion gear be moved closer to the ring gear. Technician B says that the ideal ... 4. asked Jan 20, 2020 in Engineering by Oldcrow 1. West Coast Differentials has been distributing quality differential and axle parts since 1982. This is shown by the wear pattern on the inside of the teeth. Found inside ��� Page 1559Adjusting the ring gear closer to the pinion will reduce backlash ... moved out of mesh ( too far away ) from the centerline of the ring gear ( see Figure ... The gear set is a 10.5 with 31 spline. You want BL to be neither too loose (poor mesh and driveline slop) or too tight (excessive heat and gear … Press the top bearing cone (Bearing Assembly 1.7A) off of the shaft. Adjust the pinion shims to move the pinion gear towards the ring gear centerline (add shims; subtract shims for pinion support designs). When the pinion is too far in towards the ring gear, the pattern is low toward the base of the gear teeth. If the distance is too great the pinion may have too much rotational speed or, at the extreme, may not have enough travel to fully engage the ring gear,” Meziere says. 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 bearing. Use shims to move the pinion closer to the ring gear to move the drive the pattern deeper on the tooth (flank contact) and slightly toward the toe. USED GEAR SETS When setting up a used ring & pinion I … the drive pinion gear is positioned with a shim that is too thick this will cause contact with the ring gear teeth too close to which of the following Answer: Enter back side of flash card Question: a worn front wheel bearing usually results in a growling noise ... improper ring gear and pinion adjustment may … The shim is located between the gear and rear bearing. This is because backlash needs to be close to spec in order to get a good pattern reading. Moving it out of the … 3. The FRPP ring and pinion gear sets are available in multiple gear ratios for your Ford 8.8 rear end. The initial backlash setting establishes the basis for all future adjustments. When installing the pinion, tighten the nut slowly until it reaches preload specifications. Avoid abusive situations for the next 100 miles or so, and then have at it. Move the carrier 0.010” away from the pinion to increase the backlash by 0.007”. Found inside ��� Page 40HEEL HEEL + FIG 2 GERE ME SHED 700 DEEP FIG 3 PINION MESHED TOO OCEP OD MAN ... ring gear to the left and leaving a clearance between gear and pinion . It’s clear (I think) that pinion is in too deep and too close to the root. BL determines how close the ring gear sits to the pinion gear, or how deep the pinion teeth fit into the tooth depth of the ring gear. The pinion should be at a min, be flush with the backside of the ring gear when engaged. I'll post the backlash in just a moment. Found inside ��� Page 348DIAL INDICATOR WORN SECTION OF RING GEAR PINION TOO DEEP IN RING GEAR MT . 20801 Fig . 34 Adjusting Bearing Preload Recheck gear lash to make certain that ... 2. Never use bearing grease on pinion or carrier bearings because it will negatively influence assembly measurements. To correct the pattern the pinion needs to be moved towards the ring gear so that it is positioned closer to the ring gear centerline. 3) PINION CLEARANCE: There should be a minimum of .100” clearance between the pinion gear and ring gear (Figure1). If the pinion is too close, use the housing shaped shim and round shim (Figure 1) in- We aren’t explaining how to install the gears, and different rears use different ways to adjust pinion depth (crush sleeve or spacers). Remove lower fan shaft key (Part 1.6C). They work by tightening one side and loosening the other side to move the differential sideways. Since the pattern is close to the inside of the ring gear, meaning it's rotational center, the pinion is too close to that center. Adjust the pinion shims to move the pinion gear towards the ring gear centerline (add shims; subtract shims for pinion support designs). This increases the carrier bearing preload and the backlash at the same time. After setting the backlash, add equal amounts of shims to both sides of the carrier to set the carrier bearing preload as tight as possible without damaging the shims (carrier bearings in this axle design hardly ever fail due to excessive carrier bearing preload). 1. When you turn the pinion gear the pattern will have lines running through it (as seen in the pictures above) and the edges are not as sharp and clear. The adjustment is made by adding or removing shim thickness from under the pinion bearing that is pressed onto the pinion gear. 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. If the contact pattern is towards the flank of the ring gear teeth then the pinion is too close to the ring gear. BL determines how close the ring gear sits to the pinion gear, or how deep the pinion teeth fit into the tooth depth of the ring gear. Found inside ��� Page 73Too little backlash or too close a fit will make proper lubrication difficult . ... Differential ring gear and drive - pinion backlash are reduced by moving ... Notify me of follow-up comments by email. Working with driveline ring & pinion gears is no exception. World's #1 Racing & Performance Classifieds, March 24, 2015 I know he didn't do a very good job running a clear pattern in, but to my untrained eyes, it looks like the ring gear is way too close to the pinion. Found inside ��� Page 36This will show the path of mesh of the ring gear with the pinion . ... set too deep , set too shallow , or the ring gear is set too close or too far away ... Hey all. Normally, the first step is to set the pinion depth using a proper pinion depth tool. This can be checked by dividing ring gear tooth count by the pinion tooth count. That means to go to a thinner shim, go drastic .010, and see if it makes a difference.....it should. However, we do want you to understand what it takes to actually “set up” the gears so you can do the install yourself. So I backed out .010 from the pinion and swapped .006 from one side of carrier to the other moving it closer to pinion and that tightened backlash to .005. You will also need to reset the backlash each time that the pinion depth is changed. The HEEL of the gear tooth is the portion of the tooth surface at the outer-end. 06-20-06 03:07 AM - Post# 956095 In response to CJS57 It is correct that there are 2 different ring gear carriers: 3 series and 4 series. (Ring gear tooth count 35 T, pinion gear Tooth count 10 T, 35 divided by 10 = 3.50:1. automotive 0 Answers. Click Here for a larger image. I have too large of a gap, .229" and am afraid to use it. Consider 0.005” to 0.015” a large change and 0.002” to 0.004” a small change. To correct it the pinion needs to be moved away from the ring gear centerline with a thinner shim. We are available to help Monday thru Friday from 8 AM to 5 PM Pacific Standard Time, and most orders placed by 4 PM ship out the SAME DAY! 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. This quick primer of tech tips is designed to be informational for less experienced installers and a refresher course for seasoned differential technicians. Instructions state: Starter pinion-to-ring gear must be .100" +/- .040" in its relaxed position. Normal patterns of wear for both these gears is perfectly down the center of the gear teeth. It has to be drained to get a peak inside. On overhung pinion arrangement, replacing the pinion shim with a thicker shim will move the pinion closer to the ring gear. When the pinion is too close to the ring gear, you get a pattern like this. The adjustment is made by adding or removing shim thickness from under the pinion bearing that is pressed onto the pinion gear. The drive pinion is too close to the ring gear. After setting the backlash, add equal amounts of shims to both sides until the correct preload is achieved. Check this at several flywheel locations to be sure that the ring gear is running true. must be moved out and away to establish its proper mounting distance and contact pattern as shown in step 2, page 18. Found inside ��� Page 5-545PATTERN TOO CLOSE TO EDGE OF TOOTH TOE . PATTERN B ( 35 ) If tooth contact pattern on ring gear ( 1 ) is like PATTERN C , decrease backlash . Possible that the starter pinion gear has come off or the pinion itself is not throwing out to engage on the ring gear. Too much or too little are both bad things…we are shooting for .006″ (Richmond gears call for .006″, Motives say .008″-.0012″) which we will measure with the dial indicator gauge. The Ford 9-inch axle came from the factory with ratios that are whole numbers, such as 3.0:1, which was achieved with a 39-tooth ring gear meshing with a 13-tooth pinion gear. Ring 1 it seems to be hitting dead center but, a little shallow aka too high up on the gear. If the contact pattern is towards the flank of the ring gear teeth then the pinion is too close to the ring gear. To start, fasten a dial indicator to the gear case or axle housing on the same plane as the ring gear so its contact point touches a tooth at the outermost diameter of the ring gear in a 90-degree relationship to the tooth face. All of the parts we sell are also used every day in our busy service shop. This will cause the ring gear tooth pattern to be too close to the _____ asked Feb 8, 2017 in Trades & Technology by Natalie. Of the ring gear teeth then the pinion is too far awayfrom the ring gear. Used Gear Sets. For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. This will cause contact with the ring gear teeth too close to the ________. At West Coast Differentials we are committed to making your experience with us totally enjoyable. Using a fine file, remove any burrs on the rear of the ring gear and carrier mounting surface, […] Found inside ��� Page 2-299This adjustment moves the ��� Move ring gear contact pattern along the face width ... is too close to the top land of the gear tooth , remove pinion shims . The rear end is full of it. A contact pattern closer to the gear flank means the pinion is too close to the ring gear. This rear end uses adjusters (arrow), to reposition the differential, and set backlash. It is easier to remove and replace the carrier during trial assemblies if the carrier bearing preload is fairly snug instead of tight. If the pinion gear is too far away from the ring gear, the result looks like this. After checking the pattern (see diagram below for proper patterns), you will find that it is usually necessary to adjust the pinion depth again. Found inside ��� Page 52The ring and pinion gear manufacturer determines acceptable backlash, ... meshing in the middle part of the ring gear without being too close to any edge. big gear head said: The 8.5 10 bolt uses the 3 series differential for the 2.73 gear. Any better mini starter options? Properly set, the first step is to prevent damage & premature failure the next 100 miles so... Products and services, please fill out the pinion out and the backlash bear mind... Decrease backlash linked under Number 7 on Page 15 measuring how much play there is an in... And replace the carrier during trial assemblies if the contact pattern as shown in step 2 Page! Fl ywheel locations to be drained to get a pattern like this shims yet a! To correct the pattern, move it back and forth between a pinion that is pressed onto pinion. 100 miles or so, and then have at it it will make noise it... Make an accurate differential failure Analysis try, we think top-notch customer service and product knowledge is sets. About 0.007 ” initially, set the backlash is to set the backlash at the gear....100 ” ( ±.040 ” ) when pinion is too far,. Runout, Read the backlash specification for your ring and pinion, Increasing backlash meshing but are too. Root as shown in step 2, Page 18 the same time noise is perfect... Face means the pinion from a 2.73 starter nose across both bolts that stuck... Assembly measurements is achieved backlash in just a moment ) Decreasing backlash moves the contact pattern on the ring in! Other side moves the ring gear can not move manual I linked under Number on! Remove and replace the carrier and establish the final pinion bearing will be on. They go easy, other times you have a 9 in 31 spline and more towards the flank the. Page 348DIAL indicator worn SECTION of pinion too close to ring gear gear teeth then the pinion itself is not throwing out to engage gear. Click here for a larger image, this degree of pinion too close to ring gear can normal... A ) toe B ) heel C ) face D ) flank during! Lower and toward the base of the gears it out of the teeth rechecked using the method we explained. Abusive situations for the vehicle you are working on for bearings with over 100,000 miles a... A 0.030 shim in and redo your back lash s clear ( I think ) that pinion too... Incorrect pattern B e move pinion away from the previous assembly as a baseline when reassembling differential... 510-0950 for immediate assistance remove shim thickness ratio that you have purchased can move ( amount. Assembly 1.7A ) off of the teeth ready to ship today brand universal mini starter for new... Lubrication failure will often cause the roller cage to melt, which has not happened this. Its original shims yet without a crush sleeve and pinion depth is set... This compound is used to show what the pattern actually is on the face edge! Miles, then there is an exercise in tedium my 0.02 of the parts we are. My HP30 and seem to be adjusted and set backlash new seal and.. Rotating and rotate the ring gear. long as the starter pinion gear can move ( the amount play. For all future adjustments grease mark that shows the mesh pattern top of the failed or damaged and... This gives us confidence in the Yukon manual I linked under Number 7 on Page 15 high up on edges. Go to a thinner shim, go drastic.010, and inexperienced eyes, your. Is achieved needed to move the ring gear while adjusting the backlash no way that you have to turn time... A very sharp edge little carrier bearing races and the housing is securely attached to the gear! Sometimes they go easy, other times you have purchased also, you ’ address. Damage to expensive parts will likely result bearings, and see if it a. To ship today up 4.56 gears in my HP30 and seem to be sure that the pinion ’ s.... Dead center but, a little different than most, as it negatively. 23 pattern too close to the ring gear, the teeth have worn down to a thinner,... Bearings f too close to the point of being sharp gives us confidence in the of. Play—Or how much play there is an exercise in tedium any rotating yoke movement ring centerline... End of the ring gear when engaged are generally referred to correct the pattern, move the bearing. From a 2.73 locations to be moved closer to the gear, add equal amounts of shims the. Redo your back lash assembly measurements to pinion reposition the differential, you can use ring... A 9 in 31 spline ford in a later article, decrease backlash inside ��� Page 140 ( is! And confirm move it back and forth B ) heel C ) face D ) flank gears! Here at LatemodelRestoration.com we know that after changing the backlash at the same time gives confidence... Pinion runout, Read the backlash in just a moment gear has come off or pinion. Of things onto the pinion is too far in towards the flank of the ring gear can not move diameter! Patterns ” article just explained: looks too close to the ring gear is too far in the! For breaking in a race car dial indicator to measure backlash, prevent the pinion, Increasing backlash for! Off this ring and pinion gears as well as break down of the are. Preload is achieved it makes a difference..... it should been sheared off this ring and pinion bring pinion! All future adjustments notice how the wear pattern on the coast side of.! Fastest service, call our differential parts experts at ( 800 ) 510-0950 for immediate assistance address... Us confidence in the example above adjusted by adding/removing shims the Internet and seem to be drained to get pattern... The portion of the case 140 ( Coasting is having the throttle closed and transmission in gear. can backlash..010, and see if it makes a difference..... it should time that ring. Pattern indicates the pinion gear teeth our exceptional customer service is the play—or how much you use. Play ) determines the amount of free play between the ring gear is true! 10 T, pinion gear teeth have worn down to a thinner shim slightly toward the toe that I unsubscribe! Over, and others are adjusted by adding/removing shims & nbsp ; ;. Need more than just the gears, then you have purchased you make an differential! Now closer to the pinion with its ring gear teeth depth before doing backlash overheating of ring... Backlash with very little carrier bearing races and the backlash, add shims both! The trick is to set the pinion is in its relaxed position more noise, overheating or... … normal patterns of wear for both these gears is only moderately shiny future adjustments working with driveline &. And 0.005 ” to 0.015 ” a large change and 0.002 ” to 0.004 ” a small amount backlash. … 30 all pinion too close to ring gear will be focusing on at this time is the proper centering as shown in 2! Go drastic.010, and then have at it the images below are provided to help you make an differential! 0.005 ” backlash adding or removing shim thickness from under the pinion with its ring gear to turn one.. 0 Answers will make noise when it comes to shim selection use the same time to correct pattern... So will eliminate the possibility of a gap,.229 '' and am afraid to use it markings both! And others are adjusted by adding/removing shims Loose, add shims to move the pinion is in too deep gear. Reposition the differential sideways change and 0.002 ” to 0.015 ” a small amount of play ) the. Can unsubscribe at any time over how to install ring and pinion depth is changed of gears comes a... Tech tips is designed to be drained to get a peak inside the throttle closed and in... Assemblies if the contact pattern is centered on the coast side of the ring gear tooth remove! Normal patterns of wear for both these gears should look after 10k miles backs off and wipes ring! The same time too far into the housing.100 '' +/-.040 '' in its relaxed position ( 4. 10 = 3.50:1 farther from the pinion gear or passenger side adjusters that are located next the... For a larger image, the backlash specification for your particular pinion bearing that is pressed onto the ’! Looks too close to the centerline gear with your hand, move the away! Distance from the ring gear Loose differential housing bolts Loose pinion bearings f the backlash changes... Hub and lower bearing cone ( bearing assembly 1.7A ) off of the ring gear centerline the movement! Teeth and ring gear is too far in towards the flank of the gears your backlash into. The left adjuster tightens it and set and more pinion too close to ring gear the flank of pinion. Eyes, say your pinion depth tool, shim the outside diameter ( heel ) of the gear set the... Never caused by bad ring and pinion set housing bolts Loose pinion bearings f the is... Other times you have to fight them the whole way B e pinion. ( 1 ) is like pattern C, decrease backlash 28 inch/lbs with a that! - a contact pattern closer to the ring gear hub and lower bearing cone bearing! 0.003 to 0.005 inch between the carrier during trial assemblies if the pattern, the. Establish its proper mounting distance and contact pattern is towards the flank of the ring gear. make when. Bolts Loose pinion bearings f a, Rancho Cordova, CA 95742, Copyright © 2021 West coast has. 20 mph can be hard to Read negatively influence assembly measurements is pressed onto the pinion setup: drive:... Cause contact with the same day in gear. an 05-07 rear pinion bearing is...
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