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HOMESERVICE MANUALSGMC1993JIMMY BASE, 2D UTILITY, 4.3 Z, RWD, STANDARDREPAIR AND DIAGNOSISDRIVELINES & AXLESDIFFERENTIALS & DRIVE AXLESDRIVE AXLE - FRONTOVERHAULFRONT AXLE ASSEMBLYDISASSEMBLY
1993 GMC Jimmy Base, 2D Utility, 4.3 Z, RWD, Standard

Front Axle Assembly: Disassembly

1993 GMC Jimmy Base, 2D Utility, 4.3 Z, RWD, StandardSECTION Disassembly
  1. Remove axle carrier. See FRONT AXLE ASSEMBLY  under REMOVAL & INSTALLATION. Remove right axle tube and inner axle shaft assembly. See RIGHT AXLE TUBE & INNER AXLE SHAFT  under REMOVAL & INSTALLATION.
  2. Remove shift shaft/fork assembly consisting of sleeve, springs and seals. See Figure. Remove thrust washer and output shaft from right side of carrier assembly. Remove right output shaft bearing using Bearing Remover (J-34011 ). Remove washer from right side of carrier assembly.
  3. Remove left output flange from carrier assembly by prying on one side with a screwdriver while simultaneously tapping outward on other side with a soft-faced hammer. Remove deflector from output flange. Remove 6 cover-to-carrier bolts securing left side cover. Tap cover to loosen and remove. Pry out left output flange seal with a screwdriver.
  4. Remove 10 bolts holding carrier halves together. Insert screwdriver in slots provided (one next to fill plug, one 180 degrees from fill plug) and pry carrier halves apart. See Figure.
  5. Remove differential assembly from carrier. See Figure. Remove both side bearing adjusting sleeve lock tabs. Using Side Bearing Adjusting Wrench (J-33792 ), rotate adjusting sleeve and push side bearings out of bores. Remove side bearings from adjusting sleeve using Bearing Remover (J-21551 ).
  6. Using Pinion Flange Remover Set (J-8614-01 ), hold pinion flange stationary and remove pinion nut. See Figure. Mount left half of carrier in Holding Fixture (J-33837-1 ). Use bolts supplied with remover set to install carrier on fixture. See Fig 1. Remove pinion flange and deflector.
    Fig 1: Installing Pinion Holding Fixture Tool
    G121074Courtesy of GENERAL MOTORS CORP.
  7. Remove pinion with attached shim, inner bearing and spacer as an assembly. Remove collapsible spacer from pinion. Using Differential Side/Pinion Bearing Remover (J-22912-01 ), press inner bearing from pinion. Remove shim(s) from pinion, keeping shims in order.
  8. Install Bearing Race Remover (J-33837-6 ) on Holding Fixture (J-33837-1 ) and remove outer pinion bearing, race and pinion seal. Remove inner pinion bearing race by pushing it out of carrier with bearing race remover installed on Pinion Bearing Remover/Installer Set (J-33837 ). See Fig 2.
    Fig 2: Removing Inner Pinion Bearing Race
    G121075Courtesy of GENERAL MOTORS CORP.
  9. Using Differential Side/Pinion Bearing Remover (J-22912-01 ), remove side bearings from differential case assembly. Remove ring gear bolts. Ring gear uses left-hand thread bolts. Using a brass drift, drive ring gear from differential case. DO NOT  pry ring gear from differential case or damage to ring gear and differential case will occur.
  10. Remove bolt from differential pinion gear shaft. Remove pinion gear shaft. Roll pinion gears and thrust washers out of differential case. Remove side gears and thrust washers, marking side gears and differential case left and right for reassembly reference. Upper and lower carrier mounting bushings should be replaced using Bushing Remover (J-33791 ).
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.