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First remove the differential half shafts and drive shaft, remove rear cap, loose the bolts on each end bearing,remove the differential assy. then replace bearings
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Rebuilding them consists of new U joints and maybe balanced. If it was so loose the the u joints wallowed out the keepers, Then yes, they would also need replaced. Cut off and welded on. That isn't a common problem, but I have had to replace a few. Not just on jeeps.
GET IT TO A MECHANIC!! Something is loose or about to collapse! Remember that vibration and noise can travel away from the source so get the mechanic to start in that corner. You need to get the following checked!
-Prop shaft mountings at transfer box.
-Prop shaft mountings at differential.
-Prop shaft bearings.
-Differential condition and oil level.
-Drive shafts at differential end.
-Drive shafts at the wheel end.
-All flexing joints in the system including UV joints and CV joints.
conventional axle or limited slip? Get axle code off door sticker.
SECTION 205-02: Rear Drive Axle/Differential - Ford 8.8-Inch Ring Gear
1998 Explorer/Mountaineer Workshop Manual
IN-VEHICLE REPAIR
Rear Wheel Bearing and Axle Shaft Oil Seal -4.0L SOHC and 4.0L EI, Conventional
Special Tool(s)
Axle Seal Replacer T83T-1175-A
Axle Wheel Bearing Puller T83T-1225-A
Axle Wheel Bearing Replacer T83T-1225-B
Driver Handle T80T-4000-W
Impact Slide Hammer T50T-100-A Removal
Remove the axle shaft; refer to Axle Shaft in this section.
Axle Shaft
Removal
CAUTION: Do not use heat to loosen a seized lug nut. Heat can damage the wheel (1007) and the rear wheel bearings (1225). Loosen the lug nuts (1012).
Remove the center cap.
With the weight of the vehicle on the wheels, loosen the lug nuts.
Raise and support the vehicle.
Remove the wheel and tire assembly.
Remove the lug nuts.
Remove the wheel and tire assembly.
Remove the axle housing cover (4033).
Loosen the axle housing cover bolts (4346) and drain the rear axle (4001).
Remove the axle housing cover bolts.
Remove the axle housing cover.
Remove the rear disc brake rotors (2C026); refer to Section 206-04 .
CAUTION: Once the differential pinion shaft (4211) has been removed, turning the differential case (4204) or an axle shaft (4234) will cause the differential pinion gears (4215) to fall out of the assembly. This could result in chipped or damaged components. Remove the differential pinion shaft.
Remove the differential pinion shaft lock bolt.
Remove the differential pinion shaft.
CAUTION: Do not damage the rubber O-rings in the U-washer grooves. Remove the U-washers (4N237).
Push the axle shafts inboard.
Remove the U-washers.
Reinstall the differential pinion shaft.
Install the differential pinion shaft.
Install the differential pinion shaft lock bolt finger-tight.
CAUTION: Do not damage the inner wheel bearing oil seal (1177). Remove the two axle shafts.
Installation
Lubricate the lip of the inner wheel bearing oil seal.
Use Premium Long-Life Grease XG-1-C or equivalent meeting Ford specification ESA-M1C75-B.
CAUTION: Once the differential pinion shaft has been removed, turning the differential case or an axle shaft will cause the differential pinion gears to fall out of the assembly. This could result in chipped or damaged components. Remove the differential pinion shaft.
Remove the differential pinion shaft lock bolt.
Remove the differential pinion shaft.
CAUTION: Do not damage the inner wheel bearing oil seal. Install the two axle shafts.
CAUTION: Do not damage the rubber O-rings in the U-washer grooves. Install the U-washers.
Position the two U-washers on the button end of the axle shafts.
Pull the axle shafts outward.
Install the differential pinion shaft.
Align the hole in the differential pinion shaft with the differential pinion shaft lock bolt hole.
Install the differential pinion shaft lock bolt.
Install the rear disc brake rotors; refer to Section 206-04 .
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.
WARNING: Always remove any corrosion, dirt or foreign material that may be present on the mounting surfaces of the wheel or the surface of the wheel hub or rear disc brake rotor that contacts the wheel. Installing wheels without proper metal-to-metal contact at the wheel mounting surfaces can cause the lug nut to loosen and the wheel to come off while the vehicle is in motion, causing loss of control. Clean the wheel hub and mounting surfaces.
Install the tire and wheel assembly.
Position the tire and wheel assembly.
Install the lug nuts and lower the vehicle.
Tighten the lug nuts.
Install the center cap.
CAUTION: Never remove the axle shaft oil seal by itself. Always remove the rear wheel bearing and the axle shaft oil seal at the same time. NOTE: If the axle shaft oil seal is leaking, the axle housing vent may be plugged with debris. Use Impact Slide Hammer and Axle Wheel Bearing Puller to remove the rear wheel bearing and the axle shaft oil seal.
Installation
Lubricate the new rear wheel bearing.
Use Thermally Stable Rear Axle Lubricant XY-80W90-QL or equivalent meeting Ford specification WSP-M2C197-A.
Use Axle Wheel Bearing Replacer with Driver Handle to install the rear wheel bearing.
Lubricate the lip of the new axle shaft oil seal.
Use Premium Long-Life Grease XG-1-C or equivalent meeting Ford specification ESA-M1C75-B.
Use Axle Seal Replacer with Driver Handle to install the axle shaft oil seal.
Install the axle shaft; refer to Axle Shaft in this section.
I see that the solution given is for an axle shaft and not the drive shaft that was asked about. I am 99% sure that if you take out the bolts the other end will slide out of the t-case. Then the u-joint can be replaced as normally done.
Section 05-02A: Axle, Integral Carrier — 8.8-Inch Ring Gear
1994 Town Car, Crown Victoria/Grand Marquis. Workshop Manual
REMOVAL AND INSTALLATION
Axle Shaft
NOTE: Whenever replacing the rear axle lubricant, use Rear Axle Lubricant XY-90-QL (ESP-M2C154-A) or equivalent. Removal CAUTION: The rear brake anti-lock sensor must be removed before the axle shafts are removed. The rear brake anti-lock sensor is bolted on the rear disc brake caliper anchor plate.
Raise vehicle to desired working height. Refer to Section 00-02 . Remove rear wheel (1007) and tire assembly. Remove rear disc brake calipers (2552) and rear disc brake rotors (2C026) .
Clean all dirt from area of axle housing cover with a wire brush and/or cloth.
Drain rear axle lubricant by removing the axle housing cover .
Push flanged end of the axle shafts toward the center of the vehicle and remove the rear axle shaft retaining u-washer from the button end of the axle shaft .
Remove axle shaft from the rear axle housing , being careful not to damage the inner wheel bearing oil seal (1177) and rear brake anti-lock sensor ring.
Installation NOTE: Check for presence of rear axle shaft o-ring (4A332) on the spline end of the shaft and install if not present. CAUTION: Care must be taken not to let axle shaft splines damage oil seal or bearing assembly.
Carefully slide axle shaft into rear axle housing without damaging rear wheel bearing (1225) or rear brake anti-lock sensor indicator (2C189) . Start splines into side gear and push firmly until the button end of axle shaft can be seen in the differential case .
Install the rear axle shaft retaining u-washer on the button end of the axle shaft splines, then pull the shaft outboard until the shaft splines engage and the rear axle shaft retaining u-washer seats in the counterbore of the differential side gear .
Position the differential pinion shaft through the differential case and differential pinion gears , aligning the hole in the differential pinion shaft with the lock bolt hole. Apply Rear Axle Lubricant to differential pinion shaft lock pin . Install differential pinion shaft lock pin and tighten to 20-41 Nm (15-30 lb-ft).
CAUTION: Differential pinion shaft lock pin must be tightened to specification using Stud and Bearing Mount E0AZ-19554-BA (WSK-M2G349-A1) or equivalent.
NOTE: Axle housing cover must be installed within 15 minutes of application of the silicone rubber or new silicone rubber must be applied. CAUTION: Make sure machined surfaces on both axle housing cover and rear axle housing are clean before installing the new silicone sealant. Inside of axle must be covered when cleaning the machined surface to prevent axle contamination. Tighten the cover bolts in a crosswise pattern to ensure uniform draw on axle housing cover .
Apply Silicone Rubber D6AZ-19562-AA or BA (ESB-M4G92-A or ESE-M4G195-A) or equivalent. Install axle housing cover and tighten retaining bolts to 28-38 Nm (38-52 lb-ft).
Add Motorcraft Rear Axle Lubricant XY-90-QL or KL (ESP-M2C154-A) or equivalent until it is 6-14mm (1/4-9/16 inch) below bottom of fill hole. Add 118.3 mL (4 oz) of Ford Additive Friction Modifier C8AZ-19B546-A (EST-M2C118-A) or equivalent to Traction-Lok axles. Install fill plug and tighten to 20-41 Nm (15-30 lb-ft).
Insert Rear Bearing Remover T85L-1225-AH in bore and position it behind bearing so tangs on tool engage bearing outer race. Remove rear wheel bearing and inner wheel bearing oil seal as a unit, using Impact Slide Hammer T50T-100-A.
Rear Disc Brake Caliper Anchor Plate
Lubricate the rear wheel bearing with Rear Axle Lubricant.
Install rear wheel bearing into the housing bore using Axle Tube Bearing Replacer T78P-1225-A.
CAUTION: Installation of rear wheel bearing or inner wheel bearing oil seal assembly without proper tool may result in an early bearing or seal failure. If inner wheel bearing oil seal becomes cocked in bore during installation, remove it and install a new one.
Install the inner wheel bearing oil seal using Axle Tube Seal Replacer T78P-1177-A. Use Premium Long-Life Grease XG-1-C or K (ESA-M1C75-B) or equivalent between the lips of the inner wheel bearing oil seal .
SECTION 205-02B: Rear Drive Axle/Differential — Ford 8.8-Inch Ring Gear
2003 Mustang Workshop Manual
IN-VEHICLE REPAIR
Axle Shaft
Removal
Raise and support the vehicle. For additional information, refer to Section 100-02 .
Remove the wheel and tire assembly. For additional information, refer to Section 204-04 .
Remove the rear brake disc (2C026). For additional information, refer to Section 206-04 .
Remove the differential housing cover (4033) and drain the lubricant. For additional information, refer to Differential Housing Cover in this section.
Remove the differential pinion shaft (4211).
Remove the differential pinion shaft lock bolt (4241).
Remove the differential pinion shaft.
CAUTION: Do not damage the rubber O-ring in the axle shaft groove. Remove the U-washer (4N237).
Push the axle shafts (4234) inboard.
Remove the U-washer.
CAUTION: Damage to the rear brake anti-lock sensor (2C190) may occur if it is not removed before the axle shaft. Carefully remove the rear brake anti-lock sensor. For additional information, refer to Section 206-09A .
CAUTION: Do not damage the wheel bearing oil seal. Remove the axle shaft.
--------------------------------------------------------------------------------------
Rear Wheel Bearing and Axle Shaft Oil Seal
Removal
Remove the axle shaft (4234). For additional information, refer to Axle Shaft in this section.
NOTE: If the wheel bearing oil seal is leaking, the axle housing vent may be plugged. Using the special tools, remove the rear wheel bearing and wheel bearing oil seal.
Installation
Lubricate the new rear wheel bearing with the specified lubricant.
Using the special tools, install the new rear wheel bearing.
Lubricate the lip of the new wheel bearing oil seal.
Use Premium Long-Life Grease XG-1-C or equivalent meeting Ford specification ESA-M1C75-B.
Using the special tools, install the new wheel bearing oil seal.
Install the axle shaft. For additional information, refer to Axle Shaft in this section.
Use Premium Long-Life Grease XG-1-C or equivalent meeting Ford specification ESA-M1C75-B.
CAUTION: Do not damage the wheel bearing oil seal. Install the two axle shafts.
CAUTION: Do not damage the rubber O-ring in the axle shaft groove. Install the U-washer.
Position the two U-washers on the button end of the axle shaft.
Pull the axle shaft outward.
NOTE: If a new pinion shaft lock bolt is unavailable, coat the threads with Threadlock and Sealer EOAZ-19554-AA or equivalent meeting Ford specification WSK-M2G351-A5 prior to installation. Install the differential pinion shaft.
Align the hole in the differential pinion shaft with the case lock bolt hole.
Install a new differential pinion shaft lock bolt.
Install the differential housing cover and fill the rear axle with the specified lubrication. For additional information, refer to Differential Housing Cover in this section.
Install the rear brake anti-lock sensor. For additional information, refer to Section 206-09A .
Install the rear brakes. For additional information, refer to Section 206-04 .
Install the tire and wheel assembly. For additional information, refer to Section 204-04 .
Raise and support the vehicle. For additional information, refer to Section 100-02 .
Remove the wheel and tire assembly. For additional information, refer to Section 204-04 .
Remove the differential housing cover (4033).
Loosen the bolts and drain the lubricant from the rear axle housing (4010).
Remove the bolts.
Remove the differential housing cover.
Remove the rear brake disc (2C026). For additional information, refer to Section 206-04 .
CAUTION: Turning the differential case (4204) or an axle shaft (4234) with the differential pinion shaft (4211) removed will cause the differential pinion gears (4215) to fall out of the assembly and damage the components. Remove the differential pinion shaft.
Remove the differential pinion shaft lock bolt.
Remove the differential pinion shaft.
CAUTION: Do not damage the rubber O-ring in the U-washer groove.
Remove the U-washer (4N237).
Push the axle shaft inboard.
Remove the U-washer.
Reinstall the differential pinion shaft.
Install the differential pinion shaft.
Install the differential pinion shaft lock bolt finger-tight.
CAUTION: Do not damage the wheel bearing oil seal (1177). Remove the axle shaft.
----------------------------------------------------------------------------------------------------------------- Seal Removal
Remove the axle shaft (4334). For additional information, refer to Axle Shaft in this section.
CAUTION: Never remove the wheel bearing oil seal (1177) by itself. Always remove the rear wheel bearing (1225) and the inner wheel bearing oil seal at the same time. NOTE: If the wheel bearing oil seal is leaking, the axle housing vent may be plugged with foreign material. Using the special tools, remove the rear wheel bearing and wheel bearing oil seal together.
Installation
Lubricate the new rear wheel bearing.
For 4.0L SOHC and 4.0L EI with limited slip rear axles and 5.0L vehicles, use SAE 75W-140 High Performance Rear Axle Lubricant F1TZ-19580-B or equivalent meeting Ford specification WSL-M2C192-A.
For 4.0L SOHC and 4.0L EI with conventional rear axles, use SAE 80W-90 Premium Rear Axle Lubricant XY-80W90-QL or equivalent meeting Ford specification WSP-M2C197-A.
Using the special tools, install the rear wheel bearing.
Lubricate the lip of the new wheel bearing oil seal.
Use Premium Long-Life Grease XG-1-C or equivalent meeting Ford specification ESA-M1C75-B.
Using the special tools, install the wheel bearing oil seal.
Install the axle shaft. For additional information, refer to Axle Shaft in this section.
If you removed the pinion and only replaced one of the bearings that was a mistake. You need to replace both at the same time. Also since it is a Dana differential you should have replace the crush sleeve also as this set the correct preload on the pinion bearings.
That works fine on a relatively new vehicle but one that has run in salt etc you'll save a lot of time if you remove the steering knuckle completey by separating lower ball joint and outer tie rod end ball joint and bring the whole steering knuckle to a bench to separate the hub/bearing. Soak everything with penetrant, loosen the bolts a few turns and try hitting right on the bolt heads. I also made a very sharp wedge from a chisel and rammed it hard on the other side to seoarate the hub. It will finally come apart then you'll see all the **** that was binding it due to an alumininum knuckle re-acting with a steel hub. Clean the hole and grease everything and fit new bearings
pull the shaft out and replace them.
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