Install the differential housing cover and fill the rear axle with the specified lubrication. 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. Support the halfshaft and spindle and pull it outwards from the differential 10. 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. Discussion in 'Suspension' started by wolftree, Jan 18, 2012. 51-2. Each has its own benefits and drawbacks. Remove the four rear spring center plate bolts using a wrench. Washer, Plate (For Rear Differential Drive Pinion) Select vehicle options to narrow down result. Now align and install the rear two mounting bolts and once they are all started, tighten them all. 90201-35499. Check side bearing adjusters as they are often warped and out of shape making ring and pinion settings difficult. Here is how you do it: Roll the diff under the car on a floor jack. 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. ! Install a new differential pinion shaft lock bolt. Front differentials are either leaf springs or independent front suspension (IFS). 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. Otherwise use a 15mm wrench / ratchet to unscrew the (6) half shaft retaining bolts out of the differential flange. Vibration in Drive Shaft. OPEN DIFFERENTIAL Illustration 1A and 1B show the common open differential. This will locate and hold the rear of the unit temporarily. 3. Position centralising jig LRT-51-013 to align differential assembly. If they are damaged, replace them with new ones. Setting up a differential is probably one of the most under-rated jobs that a mechanic can tackle. Install the differential pinion shaft lock bolt. Step 2: Install Rear Bolt to Hold Differential. Jan 18, 2012 at 7:12 PM #1 #1. wolftree [OP] Well-Known Member. [Note 1:] Even with the 2-piece driveshaft, rear axle pinion angularity is very critical to smooth operation. The information below is intended to compliment Meritor publication TP-9579. 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. But first, just fingertighten the bolt so you can align the differential with the other fittings. In 1992 the 240 was changed so that the right side axle was slightly shorter. $3.42. Part Name Code: 41201D . Align the slider’s slot with the crosspin, and install it so the slider’s “teeth” engage with the diff housing. Washer, Plate (For Rear Differential Drive Pinion) $4.77. Elevate the diff until you can put the rear bushing "ears" into the slots in the frame. 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. 90201-35498. 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. 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. DECO Magnetic Angle Finder Gauge Tool, 4.14 In. 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. 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. Installing a Differential in a Spitfire by Brian Neuschwander. 5. But first, just fingertighten the bolt so you can align the differential with the other fittings. 1. Part Name Code: 41201D. (c) Using SST and a hammer, remove the 2 plate washers. REAR AXLE & FINAL DRIVE. The term differential refers to this difference in wheel speed when cornering. Use a socket and ratchet to torque down the locknut. 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. 4. Tighten forward bolts to 65 Nm (48 lbf.ft). INSTALL REAR DIFFERENTIAL PINION SHAFT (a) Install the 2 thrust washers to the 2 side gears. What is the correct way to meaure and align rear axle after leaf install? (b) Remove the 4 bolts and 2 bearing caps. Washer, Plate (For Rear Differential Drive Pinion) $4.77. Tighten rearward bolts to 65 Nm (48 lbf.ft). Align the hole in the differential pinion shaft with the case lock bolt hole. This is because the right axle will not fit all the way back in with the G80 in place. Check all threads in the case for ware. If we only went straight, no differential would ever be needed. Install the differential pinion shaft. A bolt holds the differential housing bracket on the subframe. 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). A bolt holds the differential housing bracket on the subframe. Post Reply. 8. Use a rear bolt through the rear cover to hold it in place. So awhile back I swapped out the gears in my non-posi rear end for the Powertrax gears to get a locking differential. 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. OD=47,T=1.73. [Note 1:] Even with the 2-piece driveshaft, rear axle pinion angularity is very critical to smooth operation. 90201-35497. The engine is bolted to the unibody through the motor mounts. OD=47,T=1.70. Install the differential. Install Rear Bolt to Hold Differential. 2. Products Featured in this Article. Several types of differentials are used in automotive applications. SST 09504-2201 1. 4. Support the diff with a jack 11. The amount that needs to be trimmed is about 1/8 to 1/4 inch. Remove the springs and place on a clean surface. MOTORZ shows you how to change the rear differential gear oil and cover on a 2000 Ford F-350 pickup truck. HINT: Measure the thickness of the plate washers and note it down. Vibration in Drive Shaft. Step 3 - Reinstall, Align and Adjust Leaf Spring REMOVE REAR DIFFERENTIAL DRIVE PINION BEARING SPACER. Replace as necessary. 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. 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. REMOVE DIFFERENTIAL CASE ASSY (a) Align matchmarks on the bearing cap and differential carrier. In a car, the differential maintains drivability in varying conditions. REPAIRS. Finding the proper backlash setting can be found in a service manual for the vehicle you are working on. Amount that needs to be trimmed is about 1/8 to 1/4 inch pinion shaft housing cover and fill rear... Now align and install the rear two mounting bolts and once they are often and... 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