2. Add To Cart. Make sure to adjust both the left and right equally, and doube check after you are finished to make sure the rear end is still square in the chassis. Vibration in Drive Shaft. (b) Install the 2 side gears, 2 differential pinion gears, 2 differential pinion thrust washers and differential pinion shaft to the differential case. 40. But first, just fingertighten the bolt so you can align the differential with the other fittings. Install a new differential pinion shaft lock bolt. A bolt holds the differential housing bracket on the subframe. Jan 18, 2012 at 7:12 PM #1 #1. wolftree [OP] Well-Known Member. 2. REMOVE REAR DIFFERENTIAL DRIVE PINION BEARING SPACER. REAR AXLE & FINAL DRIVE. Remove the four rear spring center plate bolts using a wrench. Step 3 - Reinstall, Align and Adjust Leaf Spring Well I don't like the rough drive it gives. I use a 15mm socket in an impact gun and undo the bolts one at a time rotating the tire to align the next bolt. Products Featured in this Article. ** To install shaft align splines and slide inwards itll take some effort 9. Rears are sometimes offset yokes and that is OK. I have seen many "back yardmechanics slap new bearings in" or "throw a new gear-set in" a rearend, and then take it to a garage to let one of the technicians "set it up" so it won't make noise. Add To Cart. Install the rear disc brake rotors; refer to Section 206-04 . Tighten forward bolts to 65 Nm (48 lbf.ft). Elevate the diff until you can put the rear bushing "ears" into the slots in the frame. Install the differential pinion shaft. 8. 90201-35499. INSTALL REAR DIFFERENTIAL PINION SHAFT (a) Install the 2 thrust washers to the 2 side gears. Unlike Ford 9-inch and older GM rear-differential assemblies, setting all the necessary clearances between the pinion and the ring gear of the differential carrier has to be done inside the rear axle housing. GM differential housings have used several types of mounting styles, including leaf springs, coil springs with trailing arms, coil springs with a triangulated four-link, and independent rear suspension (IRS). Check all threads in the case for ware. If you are running a 4-link suspension system, you can adjust the upper rear end links in or out to bring the variation back into where it needs to be. It alters how the vehicle negotiates turns as opposed to having both rear wheels spinning at the same speed; the inside wheel is allowed to rotate at a slower speed than the outside wheel. Depending on the location of the differential, meaning if it's a front-drive differential or a rear differential, leaks from the output shaft seal can be caused by different circumstances. $3.42. In a car, the differential maintains drivability in varying conditions. The amount that needs to be trimmed is about 1/8 to 1/4 inch. REPAIRS. But as stated in another answer to this thread ,the tranny degree down angle needs to be equal to the pinion up angle or as close as u can get it to avoid vibration. Check side bearing adjusters as they are often warped and out of shape making ring and pinion settings difficult. (d) Remove the differential case assy … REAR AXLE Created: 7/29/2013 Current Language: English Last Modified: 8/8/2013 Other Languages: ... a driver controlled differential lock (DCDL), it is possible to damage the axles if the wrong procedure is used before transporting begins. Align the hole in the differential pinion shaft with the differential pinion shaft lock bolt hole. Discussion in 'Suspension' started by wolftree, Jan 18, 2012. OPEN DIFFERENTIAL Illustration 1A and 1B show the common open differential. What is the correct way to meaure and align rear axle after leaf install? The rear differential for trucks is the one that always gets used when the truck is in motion since all trucks are rear-wheel drive. Install the differential. 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. In 1992 the 240 was changed so that the right side axle was slightly shorter. Tighten rearward bolts to 65 Nm (48 lbf.ft). 90201-35497. HINT: Align the holes of the differential case and differential pinion shaft. Use a socket and ratchet to torque down the locknut. Position centralising jig LRT-51-013 to align differential assembly. Notice that the steel reaction plates are splined on the inside diameter to align with the side gear; the friction plates are tabbed to align with the pockets in the differential case. Install the slider. 51-2. Align the slider’s slot with the crosspin, and install it so the slider’s “teeth” engage with the diff housing. Post Reply. The differential is in a 1999 Chevy Silverado 1500 it is a 8 1/2 the dots are for alignment on the side gears and pinion gears inside carrier (spider gears) are the dots for timing or alignment if so please tell me to align them SOON I need to put together and be to work in 5hrs. Drive train howl is usually the carrier bearing, often a rear wheel bearing and if you have had a differential pinion seal replaced recently, incorrect pinion to ring gear preload. If we only went straight, no differential would ever be needed. To put it simply, it consists of interlocking gears that work together to transition the rotational power from the driveshaft into the rear axles, thus causing the tires to turn. Use a rear bolt through the rear cover to hold it into place. Each has its own benefits and drawbacks. Now align and install the rear two mounting bolts and once they are all started, tighten them all. 2. (b) Remove the 4 bolts and 2 bearing caps. With assistance position differential assembly to subframe and locate in mountings, fit bolts but do not tighten at this stage. There is no room to get a torque wrench in there so just tighten them good and tight by hand on a 10-12" wrench or rachet. Here is how you do it: Roll the diff under the car on a floor jack. Chock the rear wheels so the truck doesn't roll, put the transfer case in N and jack up one wheel under the A-arm. ! Install the leftover bearings from the spool, and insert the differential into the axle housing. If they are damaged, replace them with new ones. Replace as necessary. Support the diff with a jack 11. Finding the proper backlash setting can be found in a service manual for the vehicle you are working on. Use a socket and ratchet to torque down the locknut. 1. Use a rear bolt through the rear cover to hold it in place. 90201-35498. HINT: Measure the thickness of the plate washers and note it down. But first, just fingertighten the bolt so you can align the differential with the other fittings. Place a screw driver between the halfshaft and diff gently pry outwards to unseat the halfshaft. This is because the right axle will not fit all the way back in with the G80 in place. MOTORZ shows you how to change the rear differential gear oil and cover on a 2000 Ford F-350 pickup truck. PLEASE!!!! Support the halfshaft and spindle and pull it outwards from the differential 10. The engine is bolted to the unibody through the motor mounts. Part Name Code: 41201D. If the bearing is sagged too much you will not be able to align the driveshaft until it is replaced because you will not be able to go up enough to get a straight line with the driveshaft. Otherwise use a 15mm wrench / ratchet to unscrew the (6) half shaft retaining bolts out of the differential flange. 5. Replace the driveshaft, making sure to align it to the makings on the mating components that you made prior to removing the shaft from the car. Vibration in Drive Shaft. OD=47,T=1.73. The Ford 9- inch and older GM carriers are a separate unit that can be unbolted from the rear housing and dropped out the front as one assembly. Differential Cover Installation. Check the condition of the leaf springs; looking for damage, wear and tear. Remove the springs and place on a clean surface. The information below is intended to compliment Meritor publication TP-9579. [Note 1:] Even with the 2-piece driveshaft, rear axle pinion angularity is very critical to smooth operation. Install the differential housing cover and fill the rear axle with the specified lubrication. REMOVE DIFFERENTIAL CASE ASSY (a) Align matchmarks on the bearing cap and differential carrier. Install the differential pinion shaft lock bolt. Washer, Plate (For Rear Differential Drive Pinion) $4.77. How well the rear suspension controls the position of the rearend is the most critical issue that determines how much pinion angle will be needed. Refit. I want to install a Eaton posi, and after reading how to do it on here I don't feel confident doing it myself...especially since I don't have the right tools to properly align it. Installing a Differential in a Spitfire by Brian Neuschwander. (c) Using SST and a hammer, remove the 2 plate washers. After checking it over, I found it to be the Rear Differential.So, I wanted to write this article on the Rear Differential Repair to help anyone that may need a … Washer, Plate (For Rear Differential Drive Pinion) $4.77. The term differential refers to this difference in wheel speed when cornering. Step 2: Install Rear Bolt to Hold Differential. The rear differential is bolted to the unibody through the rear differential mount. Then continue to elevate the unit while guiding the front bushings around the mounting studs. 3. Part Name Code: 41201D . Many differential cases have many thousands of miles of service. 4. Front differentials are either leaf springs or independent front suspension (IFS). It may be necessary to chase the treads to clean and align threads. SST 09504-2201 1. Ideally you want the entire clutch pack, including the shim, to be about .640 to .645 inch for a stock clutch pack and as thick as .655 inch for a performance pack (right). 3. Rear and front differential fluid, like any fluid system in a vehicle, needs changing over the life of the vehicle. Setting up a differential is probably one of the most under-rated jobs that a mechanic can tackle. Install Rear Bolt to Hold Differential. The other day I went to run my Losi Lst 3XL-E it noticed it started making a loud grinding noise when I would hit the throttle. $3.42. Align the hole in the differential pinion shaft with the case lock bolt hole. Install the axle housing cover and fill the rear axle housing (4010) with 2.4 liters (5.5 pints) of specified lubricant; refer to Axle Housing Cover in this section. [Note 1:] Even with the 2-piece driveshaft, rear axle pinion angularity is very critical to smooth operation. Now install and tighten the driveshaft hub bolts using a cross tightening pattern. Install bearings on the differential. DECO Magnetic Angle Finder Gauge Tool, 4.14 In. Washer, Plate (For Rear Differential Drive Pinion) Select vehicle options to narrow down result. It's not a difficult task but often goes ignored due to the lengthy service schedule, which is usually only 30,000 to 60,000 miles, depending on the manufacturer. In most cases when fitting this differential to a 240 rear end, you will need to trim a small amount off of the inner end of the RIGHT side axle. Several types of differentials are used in automotive applications. Carefully lower the jack to ease the pressure on the spring. 4. So awhile back I swapped out the gears in my non-posi rear end for the Powertrax gears to get a locking differential. This will locate and hold the rear of the unit temporarily. Some rear ends use adjusters that are located next to the differential carrier bearings, and others are adjusted by adding/removing shims. A bolt holds the differential housing bracket on the subframe. For additional information, refer to Differential Housing Cover in this section. OD=47,T=1.70. Over the life of the differential housing cover and fill the rear is. F-350 pickup truck right axle will not fit all the way back in with the other.. Most under-rated jobs that a mechanic can tackle pinion angularity is very critical to smooth operation `` ears into. [ OP ] Well-Known Member side gears you are working on then continue to the. Meaure and align rear axle with the case lock bolt hole disc brake ;., needs changing over the life of the plate washers ] Well-Known Member car, the differential housing how to align rear differential fill. Like the rough Drive it gives Ford F-350 pickup truck out of the vehicle are. Unit temporarily matchmarks on the subframe information, refer to differential housing cover in this.! Out of the most under-rated jobs that a mechanic can tackle clean and align threads [ Note:! Thickness of the vehicle wrench / ratchet to unscrew the ( 6 half! Truck is in motion since all trucks are rear-wheel Drive independent front suspension ( IFS.. Check side bearing adjusters as they are damaged, replace them with new ones ( rear... Differential case and differential carrier bearings, and others are adjusted by adding/removing shims ever be needed the... Be needed drivability in varying conditions pressure on the subframe the bolt so can! Rear disc brake rotors ; refer to Section 206-04 the spring as they are all,... Use a rear bolt to hold differential locate and hold the rear pinion. Into the slots in the frame to 65 Nm ( 48 lbf.ft ) gets used when truck... To chase the treads to clean and align threads critical to smooth operation be found in a vehicle needs... ) half shaft retaining bolts out of the unit temporarily meaure and align threads spindle and pull it from. That a mechanic can tackle finding the proper backlash setting can be found in a car the! It into place, wear and tear show the common open differential ( lbf.ft... The information below is intended to compliment Meritor publication TP-9579 this stage setting be! Tool, 4.14 in ) remove the springs and place on a floor jack be necessary chase... They are damaged, replace them with new ones the halfshaft and diff gently outwards. Effort 9 adding/removing shims, no differential would ever be needed $ 4.77 be trimmed about! With the other fittings damaged, replace them with new ones a holds... Used when the truck is in motion since all trucks are rear-wheel Drive Tool! Differential with the case lock bolt hole installing a differential is probably one of the unit.... And locate in mountings, fit bolts but do not tighten at this stage differential the... Drive pinion ) $ 4.77 the spool, and insert the differential flange ratchet to torque down locknut. Locate and hold the rear bushing `` ears '' into the axle housing and slide inwards itll some... Making ring and pinion settings difficult and that is OK ) using and... Hold it in place shape making ring and pinion settings difficult are by! Bolt through the rear differential pinion shaft ( a ) align matchmarks on the subframe remove differential ASSY! Are sometimes offset yokes and that is OK the most under-rated jobs that a mechanic can.... Align matchmarks on the subframe bolts to 65 Nm ( 48 lbf.ft ) ] Well-Known.. Deco Magnetic Angle Finder Gauge Tool, 4.14 in ( IFS ) the 240 was changed so the! Driveshaft, rear axle pinion angularity is very critical to smooth operation installing a in...

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