>• Park the vehicle on a level surface and turn off the engine.
• Allow the engine to cool down completely.
• Engage the parking brake.
• Chock the rear wheels.
>• Safely raise the front of the vehicle so that you have enough room to work underneath.
>• Place a drain pan under the differential to catch any fluid that may leak out.
Step 2: Remove the propeller shaft.
>• Remove the prop shaft nuts, usually 24 mm.
>• Mark the driveshaft in alignment with a permanent marker in relation to the companion flange.
>• Using a large prybar or a pry bar and hammer rotate companion flange clockwise to create space between the output shaft spline and the pinion flange splines.
• Separate Propeller shaft from the differential.
• Slide Propeller shaft out of transmission output housing.
Step 3: Remove the oil pan.
>• Remove the bolts that secure the oil pan to the differential.
>• Carefully remove the oil pan, paying attention not to drop any of the bolts into the differential.
Step 4: Remove the old seal.
>• Use a seal puller to remove the old seal from the differential housing.
>• Be careful not to damage the differential housing.
Step 5: Install the new seal.
>• Apply a thin coat of RTV silicone sealant to the new seal.
>• Carefully install the new seal into the differential housing, using a seal installer.
>• Make sure that the seal is seated properly.
Step 6: Reinstall the oil pan.
>• Reinstall the oil pan and secure it with the bolts that were removed in Step 3.
>• Tighten the bolts snugly.
Step 6: Reattach the driveshaft
>• Insert driveshaft into the transmission’s output housing.
>• Rotate the companion flange until the alignment marks created earlier line up.
>• Insert the driveshaft into the differential.
>• Install 24mm driveshaft bolts and loosely tighten.
>• While rotating the driveshaft, tighten the driveshaft bolts
tightening specs: 51 ft-LBs (70 Nm)
Step 7: Refill the differential with oil.
>• Use a funnel to add GL-5 80W-90 gear oil to the differential, until it reaches the “Full” mark on the dipstick.
>• Replace the dipstick.
Step 8: Test drive the vehicle.
>• Carefully lower the vehicle to the ground.
>• Start the engine and let it run for a few minutes.
>• Check for any leaks.
>• If there are no leaks, take the vehicle for a test drive.
>• Listen for any unusual noises.
>• Make sure that the differential is functioning properly.
Note: This is a basic guide and the actual process may vary depending on the model and year of your vehicle. It is always a good idea to refer to the vehicle's service manual for specific instructions.
