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Home >> Ford >> 2003 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2124 (Rear Drive Axle/Differential - DANA 80 -- F350 Super Duty) >> Disassembly And Assembly >> Differential Case and Ring Gear - Traction-Lok® >> Disassembly

Differential Case and Ring Gear - Traction-Lok®: Disassembly

WARNING: This page is about a different car, the 2008 Ford Pickup and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the differential carrier. For additional information, refer to Differential Carrier .
  2. Index-mark the differential case.
    1. Index-mark the differential case flange (ring gear) and button (cover) halves.
    2. Index-mark the differential pinion shafts and corresponding ramps.
    3. Fig 1: Marking Differential Case Flange (Ring Gear) & Button (Cover) Halves
    GF0006365Courtesy of FORD MOTOR CO.
    NOTE: Whenever removing the differential ring gear bolts, always install new Grade 9 differential ring gear bolts.
  3. Remove 8 of the differential ring gear bolts. Leave 4 differential ring gear bolts loosely assembled, 90 degrees apart.
    4. Fig 2: Ring Gear Bolts (4 Remaining)
    GF0006310Courtesy of FORD MOTOR CO.
  4. Tap each differential ring gear bolt head alternately with a rawhide or plastic hammer to loosen the differential ring gear. Remove the 4 differential ring gear bolts and the differential ring gear.
    • Discard the differential ring gear bolts.
    5. Fig 3: Tapping Ring Gear Bolts
    GF0006311Courtesy of FORD MOTOR CO.
    NOTE: An axle shaft held in a vise, with the shaft splines extending not more than 3 inches above the vise jaws, makes an excellent holding fixture for the differential case.
  5. Loosen, but do not remove, the 8 bolts.
    6. Fig 4: Locating Differential Case Bolts
    G03883896Courtesy of FORD MOTOR CO.
  6. Place the differential assembly on a bench.
  7. Remove the bolts and the button half of the differential case.
    8. Fig 5: Locating Differential Case Bolts
    G03883896Courtesy of FORD MOTOR CO.
  8. Remove the differential side gear, rear axle disc and plate kit, differential pinion gears and the differential pinion shafts. Keep these parts in order for correct installation by placing them aside with the button half of the differential case.
    9. Fig 6: Differential Side Gear, Side Gear Ring, Rear Axle Disc & Plate Kit, Differential Pinion Gears & Differential Pinion Shafts
    GF0006366Courtesy of FORD MOTOR CO.
  9. Remove the side gear and the rear axle disc and plate kit from the flange half of the differential case. Keep these parts in order by placing them on the pinion flange as shown.
    10. Fig 7: Side Gear Ring & Rear Axle Disc & Plate Kit
    GF0006367Courtesy of FORD MOTOR CO.
  10. Inspect the following components:
    • The clutch plates and clutch discs for cracks, excessive wear and distortion. Always install an entirely new rear axle disc and plate kit on both sides if discarding one or more of the clutch plates or clutch discs.
    • The differential pinion shafts and the ramp surfaces on the differential case for excessive wear or pitting.
    • The differential side gear and differential pinion gear teeth.
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