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. Refit. 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). Tighten rearward bolts to 65 Nm (48 lbf.ft). Setting up a differential is probably one of the most under-rated jobs that a mechanic can tackle. Remove the four rear spring center plate bolts using a wrench. INSTALL REAR DIFFERENTIAL PINION SHAFT (a) Install the 2 thrust washers to the 2 side gears. Several types of differentials are used in automotive applications. $3.42. The rear differential is bolted to the unibody through the rear differential mount. A bolt holds the differential housing bracket on the subframe. ** To install shaft align splines and slide inwards itll take some effort 9. 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. [Note 1:] Even with the 2-piece driveshaft, rear axle pinion angularity is very critical to smooth operation. 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. It may be necessary to chase the treads to clean and align threads. A bolt holds the differential housing bracket on the subframe. 51-2. Position centralising jig LRT-51-013 to align differential assembly. REAR AXLE & FINAL DRIVE. Post Reply. For additional information, refer to Differential Housing Cover in this section. 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. 4. If we only went straight, no differential would ever be needed. 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. 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. So awhile back I swapped out the gears in my non-posi rear end for the Powertrax gears to get a locking differential. Here is how you do it: Roll the diff under the car on a floor jack. 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. Support the halfshaft and spindle and pull it outwards from the differential 10. Install the rear disc brake rotors; refer to Section 206-04 . Step 2: Install Rear Bolt to Hold Differential. Many differential cases have many thousands of miles of service. HINT: Measure the thickness of the plate washers and note it down. Align the slider’s slot with the crosspin, and install it so the slider’s “teeth” engage with the diff housing. Check the condition of the leaf springs; looking for damage, wear and tear. OD=47,T=1.73. Washer, Plate (For Rear Differential Drive Pinion) $4.77. Installing a Differential in a Spitfire by Brian Neuschwander. Align the hole in the differential pinion shaft with the differential pinion shaft lock bolt hole. Add To Cart. (c) Using SST and a hammer, remove the 2 plate washers. Install the slider. Products Featured in this Article. Now install and tighten the driveshaft hub bolts using a cross tightening pattern. Vibration in Drive Shaft. Install a new differential pinion shaft lock bolt. Use a rear bolt through the rear cover to hold it into place. Finding the proper backlash setting can be found in a service manual for the vehicle you are working on. This is because the right axle will not fit all the way back in with the G80 in place. Install Rear Bolt to Hold Differential. 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. The information below is intended to compliment Meritor publication TP-9579. If they are damaged, replace them with new ones. But first, just fingertighten the bolt so you can align the differential with the other fittings. DECO Magnetic Angle Finder Gauge Tool, 4.14 In. (b) Remove the 4 bolts and 2 bearing caps. Align the hole in the differential pinion shaft with the case lock bolt hole. 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 … 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. In a car, the differential maintains drivability in varying conditions. OD=47,T=1.70. 2. SST 09504-2201 1. The engine is bolted to the unibody through the motor mounts. HINT: Align the holes of the differential case and differential pinion shaft. 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. PLEASE!!!! Use a socket and ratchet to torque down the locknut. Front differentials are either leaf springs or independent front suspension (IFS). Then continue to elevate the unit while guiding the front bushings around the mounting studs. The term differential refers to this difference in wheel speed when cornering. 90201-35497. 1. 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. 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. OPEN DIFFERENTIAL Illustration 1A and 1B show the common open differential. 40. 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. What is the correct way to meaure and align rear axle after leaf install? 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. 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.

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