Use a rear bolt through the rear cover to hold it into place. Vibration in Drive Shaft. Post Reply. 3. (b) Remove the 4 bolts and 2 bearing caps. Install the differential pinion shaft lock bolt. For additional information, refer to Differential Housing Cover in this section. Several types of differentials are used in automotive applications. (b) Install the 2 side gears, 2 differential pinion gears, 2 differential pinion thrust washers and differential pinion shaft to the differential case. 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. Products Featured in this Article. 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. The rear differential is bolted to the unibody through the rear differential mount. Well I don't like the rough drive it gives. 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. 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 … 40. 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. 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 REAR DIFFERENTIAL PINION SHAFT (a) Install the 2 thrust washers to the 2 side gears. 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. With assistance position differential assembly to subframe and locate in mountings, fit bolts but do not tighten at this stage. Use a socket and ratchet to torque down the locknut. Part Name Code: 41201D . REPAIRS. Elevate the diff until you can put the rear bushing "ears" into the slots in the frame. 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. Install the differential. REMOVE REAR DIFFERENTIAL DRIVE PINION BEARING SPACER. 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. [Note 1:] Even with the 2-piece driveshaft, rear axle pinion angularity is very critical to smooth operation. OD=47,T=1.70. Some rear ends use adjusters that are located next to the differential carrier bearings, and others are adjusted by adding/removing shims. DECO Magnetic Angle Finder Gauge Tool, 4.14 In. In 1992 the 240 was changed so that the right side axle was slightly shorter. Position centralising jig LRT-51-013 to align differential assembly. A bolt holds the differential housing bracket on the subframe. Step 3 - Reinstall, Align and Adjust Leaf Spring 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. 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. 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. Align the slider’s slot with the crosspin, and install it so the slider’s “teeth” engage with the diff housing. REAR AXLE & FINAL DRIVE. Here is how you do it: Roll the diff under the car on a floor jack. Install bearings on the differential. The information below is intended to compliment Meritor publication TP-9579. Refit. What is the correct way to meaure and align rear axle after leaf install? But first, just fingertighten the bolt so you can align the differential with the other fittings. Jan 18, 2012 at 7:12 PM #1 #1. wolftree [OP] Well-Known Member. Check the condition of the leaf springs; looking for damage, wear and tear. Many differential cases have many thousands of miles of service. Now install and tighten the driveshaft hub bolts using a cross tightening pattern. Front differentials are either leaf springs or independent front suspension (IFS). OPEN DIFFERENTIAL Illustration 1A and 1B show the common open differential. Add To Cart. Install Rear Bolt to Hold Differential. $3.42. Add To Cart. Replace as necessary. (d) Remove the differential case assy … Washer, Plate (For Rear Differential Drive Pinion) $4.77. 4. ! 51-2. Installing a Differential in a Spitfire by Brian Neuschwander. If they are damaged, replace them with new ones. Align the hole in the differential pinion shaft with the differential pinion shaft lock bolt hole. If we only went straight, no differential would ever be needed. Part Name Code: 41201D. So awhile back I swapped out the gears in my non-posi rear end for the Powertrax gears to get a locking differential. Each has its own benefits and drawbacks. Tighten forward bolts to 65 Nm (48 lbf.ft). 3. 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. Washer, Plate (For Rear Differential Drive Pinion) $4.77. 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. This is because the right axle will not fit all the way back in with the G80 in place. Tighten rearward bolts to 65 Nm (48 lbf.ft). 90201-35499. Differential Cover Installation. Install the rear disc brake rotors; refer to Section 206-04 . Align the hole in the differential pinion shaft with the case lock bolt hole. 2. Install the leftover bearings from the spool, and insert the differential into the axle housing. Finding the proper backlash setting can be found in a service manual for the vehicle you are working on. Install the differential pinion shaft. 90201-35498. It may be necessary to chase the treads to clean and align threads. The engine is bolted to the unibody through the motor mounts. 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. 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. MOTORZ shows you how to change the rear differential gear oil and cover on a 2000 Ford F-350 pickup truck. [Note 1:] Even with the 2-piece driveshaft, rear axle pinion angularity is very critical to smooth operation. 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. Install a new differential pinion shaft lock bolt. 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. Install the slider. 8. Use a socket and ratchet to torque down the locknut. HINT: Measure the thickness of the plate washers and note it down. OD=47,T=1.73. ** To install shaft align splines and slide inwards itll take some effort 9. Place a screw driver between the halfshaft and diff gently pry outwards to unseat the halfshaft. Setting up a differential is probably one of the most under-rated jobs that a mechanic can tackle. 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. Use a rear bolt through the rear cover to hold it in place. 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. Bolt through the rear differential Drive pinion ) Select vehicle options to narrow down result a 15mm /. 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