Finding the proper backlash setting can be found in a service manual for the vehicle you are working on. Support the halfshaft and spindle and pull it outwards from the differential 10. In 1992 the 240 was changed so that the right side axle was slightly shorter. OD=47,T=1.70. 2. Rears are sometimes offset yokes and that is OK. REAR AXLE & FINAL DRIVE. 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. Well I don't like the rough drive it gives. The information below is intended to compliment Meritor publication TP-9579. Front differentials are either leaf springs or independent front suspension (IFS). ** To install shaft align splines and slide inwards itll take some effort 9. Install the differential pinion shaft. A bolt holds the differential housing bracket on the subframe. Install the differential housing cover and fill the rear axle with the specified lubrication. In a car, the differential maintains drivability in varying conditions. (d) Remove the differential case assy … If we only went straight, no differential would ever be needed. But first, just fingertighten the bolt so you can align the differential with the other fittings. REMOVE DIFFERENTIAL CASE ASSY (a) Align matchmarks on the bearing cap and differential carrier. Remove the four rear spring center plate bolts using a wrench. 2. 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. PLEASE!!!! 3. 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. Elevate the diff until you can put the rear bushing "ears" into the slots in the frame. Differential Cover Installation. 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. A bolt holds the differential housing bracket on the subframe. 51-2. 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. 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. 90201-35497. MOTORZ shows you how to change the rear differential gear oil and cover on a 2000 Ford F-350 pickup truck. Some rear ends use adjusters that are located next to the differential carrier bearings, and others are adjusted by adding/removing shims. 4. Setting up a differential is probably one of the most under-rated jobs that a mechanic can tackle. Add To Cart. Support the diff with a jack 11. OPEN DIFFERENTIAL Illustration 1A and 1B show the common open differential. 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. Install a new differential pinion shaft lock bolt. With assistance position differential assembly to subframe and locate in mountings, fit bolts but do not tighten at this stage. Remove the springs and place on a clean surface. 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. Vibration in Drive Shaft. 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). 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. 90201-35498. 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. 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. Several types of differentials are used in automotive applications. 4. 5. What is the correct way to meaure and align rear axle after leaf install? The term differential refers to this difference in wheel speed when cornering. Check side bearing adjusters as they are often warped and out of shape making ring and pinion settings difficult. 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. Install Rear Bolt to Hold Differential. Install the differential. (b) Remove the 4 bolts and 2 bearing caps. But first, just fingertighten the bolt so you can align the differential with the other fittings. Install the leftover bearings from the spool, and insert the differential into the axle housing. The amount that needs to be trimmed is about 1/8 to 1/4 inch. Discussion in 'Suspension' started by wolftree, Jan 18, 2012. Washer, Plate (For Rear Differential Drive Pinion) $4.77. 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. Jan 18, 2012 at 7:12 PM #1 #1. wolftree [OP] Well-Known Member. This is because the right axle will not fit all the way back in with the G80 in place. Washer, Plate (For Rear Differential Drive Pinion) $4.77. 90201-35499. 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. Now install and tighten the driveshaft hub bolts using a cross tightening pattern. 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. HINT: Align the holes of the differential case and differential pinion shaft. Tighten rearward bolts to 65 Nm (48 lbf.ft). Many differential cases have many thousands of miles of service. Tighten forward bolts to 65 Nm (48 lbf.ft). Align the hole in the differential pinion shaft with the case lock bolt hole. 1. Here is how you do it: Roll the diff under the car on a floor jack. DECO Magnetic Angle Finder Gauge Tool, 4.14 In. Rear and front differential fluid, like any fluid system in a vehicle, needs changing over the life of the vehicle. Part Name Code: 41201D . ! Align the hole in the differential pinion shaft with the differential pinion shaft lock bolt hole. Refit. Install the slider. 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. This will locate and hold the rear of the unit temporarily. Install bearings on the differential. Align the slider’s slot with the crosspin, and install it so the slider’s “teeth” engage with the diff housing. It may be necessary to chase the treads to clean and align threads. Install the rear disc brake rotors; refer to Section 206-04 . Add To Cart. Each has its own benefits and drawbacks. 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