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Home >> Ford >> 2002 >> Taurus SES, 3.0 S >> Repair and Diagnosis >> External Pages >> Different car >> Section 397 (Rear Drive Axle/Differential - DANA 80 -- F350 Super Duty) >> Disassembly And Assembly >> Differential Case and Ring Gear >> Disassembly

Differential Case and Ring Gear: Disassembly

WARNING: This page is about a different car, the 2003 Ford Pickup and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

All differentials 

    NOTE: Differential bearing shims are available in thicknesses of 0.762, 0.787, 0.813, 0.838, 0.864, 0.889 and 0.914 mm (0.030, 0.031, 0.032, 0.033, 0.034, 0.035 and 0.036 in).
    NOTE: If damaged, install new differential bearing shims.
    NOTE: Install new differential bearings if removing them from the differential case.
  1. Using the special tool, remove the differential bearings.
    • Wire the differential bearing shims, differential bearing cup, differential bearing, and selective outboard spacer(s) together. Note from which side they were removed (differential ring gear side or the opposite side).
      Fig 1: Removing Differential Bearings Using Special Tool
      G01550848Courtesy of FORD MOTOR CO.
  2. NOTE: Use a vise with brass jaws or wood blocks.
  3. Place the differential case in a vise.
  4. CAUTION: Do not damage the anti-lock speed sensor ring when removing the differential ring gear. If removing the anti-lock speed sensor ring, discard it and install a new one.
    NOTE: Always install new bolts upon assembly. Use Grade 9 bolts for all Dana rear axles.
    Fig 2: Removing Bolts
    G01550849Courtesy of FORD MOTOR CO.
  5. Remove the bolts. Leave four bolts loosely assembled, 90 degrees apart.
  6. Tap each bolt head alternately with a rawhide or plastic hammer to loosen the differential ring gear. Remove the bolts and the differential ring gear.
    Fig 3: Taping Each Bolt Head Alternately With Rawhide Or Plastic Hammer
    G01550850Courtesy of FORD MOTOR CO.
  7. If necessary, remove the anti-lock speed sensor ring with a soft-faced hammer. Discard the anti-lock speed sensor ring.
    Fig 4: Removing Anti-Lock Speed Sensor Ring With Soft-Faced Hammer
    G01550851Courtesy of FORD MOTOR CO.
  8. The Truetrac® and Trac-Lok® differential assemblies are non-repairable. Discard the entire assembly if it is worn/damaged. For conventional differential assemblies, proceed as follows.
    Fig 5: Identifying Truetrac® Differential Assemblies
    G01550852Courtesy of FORD MOTOR CO.
    Fig 6: Identifying Trac-Lok® Differential Assemblies
    G01550853Courtesy of FORD MOTOR CO.

    Conventional differential 

  9. NOTE: Use a vise with brass jaws or wood blocks.
  10. Place the differential case in a vise.
  11. Using a small drift, drive out the differential pinion shaft lock pin.
    Fig 7: Driving Out Differential Pinion Shaft Lock Pin Using Small Drift
    G01550854Courtesy of FORD MOTOR CO.
  12. Using a drift, remove the differential pinion shaft.
    Fig 8: Removing Differential Pinion Shaft Using Drift
    G01550855Courtesy of FORD MOTOR CO.
  13. To remove the differential side gears and the differential pinion gears, rotate the differential side gears. The differential pinion gears will turn to the opening in the differential case.
    Fig 9: Removing Differential Side Gears
    G01550856Courtesy of FORD MOTOR CO.
  14. Remove the differential pinion gears and the differential pinion thrust washers behind the differential pinion gears.
  15. Lift out the differential side gears and the differential side gear thrust washers.