Question about 1992 Isuzu Rodeo

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Rear Axle Bearing Replacement

I'm looking for some advise on how to replace a rear axle bearing on a 1992 Isuzu Rodeo. I have notices a steading growling noize that is getting louder every week I drive it. It doesn't really sound like a differential whine that stops while under a load and starts whineing after you let off the power. I think I might be an axle bearing going out.
Help?
Can I remove the rear axle shafts with bearings without pulling the differential cover plate and removing any retainment clips etc. that might be inside the differention housing?

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That absolutely sounds like an axle (wheel) bearing. Jack up that corner of the truck and grab the top and bottom of the wheel, and shake like crazy. If you have any play whatsoever, it's a sign of a bad bearing (although you could have a bad one and not have any play - it would only mean the bearing isn't worn badly enough to cause looseness in the wheel).

You should be able to remove the axles without opening the diff up. If the axles have c-clips or snap rings on the ends inside the diff, you can usually get the axles out by dismounting them from the hubs and getting them free of all attachment except the diff, and then use a large flat-tip screwdriver as a pry bar. Use it right where the axle body mates to the diff, and lever it while you pull/yank/shake/swear at the axle, and you'll manage to pop the axle out of the diff. Sometimes it takes some time and profanity, but so far it's worked for me everytime.

Posted on Aug 02, 2008

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If it's a rear axle bearing.....your best bet would be to remove the hub\bearing housing\axle assembly and take it to a shop to have it pressed out and new pressed back in. Make sure the seal is done at the same time.......There are a number of manuals (eg. Chiltons) that cover axle removal and replacement.

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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
sra~us~en~file=ani_caut.gif~gen~ref.gif 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.
  1. 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) .




  1. Clean all dirt from area of axle housing cover with a wire brush and/or cloth.
  1. Drain rear axle lubricant by removing the axle housing cover .
  1. Remove differential pinion shaft lock pin and differential pinion shaft .


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  1. 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 .



  1. 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.
sra~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Care must be taken not to let axle shaft splines damage oil seal or bearing assembly.
  1. 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 .
  1. 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 .
  1. 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). sra~us~en~file=ani_caut.gif~gen~ref.gif 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.
    sra~us~en~file=ani_caut.gif~gen~ref.gif 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 .
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  1. Install rear brake anti-lock sensor indicator . Tighten retaining bolt to 4.5-6.8 Nm (40-60 lb-in).
  1. Install rear disc brake caliper and rear disc brake rotor .
  1. Install wheels and tires.
---------------------------------------------------------
  1. 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




  1. Lubricate the rear wheel bearing with Rear Axle Lubricant.



  1. Install rear wheel bearing into the housing bore using Axle Tube Bearing Replacer T78P-1225-A.



    sra~us~en~file=ani_caut.gif~gen~ref.gif 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.
  1. 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 .



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  1. sxn~us~en~file=ani_caut.gif~gen~ref.gif 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.
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    1. Remove the differential pinion shaft lock bolt.
    1. Remove the differential pinion shaft.
  2. sxn~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not damage the rubber O-ring in the U-washer groove.
  3. Remove the U-washer (4N237).
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Reinstall the differential pinion shaft.
  1. Install the differential pinion shaft.
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  3. sxn~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not damage the wheel bearing oil seal (1177).
    Remove the axle shaft.
-----------------------------------------------------------------------------------------------------------------
Seal Removal
  1. Remove the axle shaft (4334). For additional information, refer to Axle Shaft in this section.
  1. sxn~us~en~file=ani_caut.gif~gen~ref.gif 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.
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6c7eb46.gif Installation
  1. 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.
  1. Using the special tools, install the rear wheel bearing.

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  1. 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.
  1. Using the special tools, install the wheel bearing oil seal.
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  1. Install the axle shaft. For additional information, refer to Axle Shaft in this section.

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1 Answer

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Removal Procedure
  1. Raise the vehicle. Refer to Vehicle Lifting in General Diagnosis.
  2. Remove the wheel and the tire. Refer to Tire and Wheel Removal and Installation in Wheels, Tires and Alignment.
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    2. Remove the brake rotor. Refer to Brake Rotor Replacement in Disc Brakes.
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    Notice: Refer to Fastener Notice in Service Precautions.
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