Differential Case And Ring Gear: Disassembly

All axles 

1. Using the Transmission Holding Fixture, mount the carrier housing.
Fig 1: Identifying Special Tool (307-003)
Courtesy of FORD MOTOR CO.
NOTE: If reusing the differential ring gear and pinion, measure and record the backlash before disassembly. Assembling the differential ring gear and pinion to the recorded backlash will match the established wear patterns. Hand-rolled patterns will cover less area than the established patterns.
2. Measure and record the differential ring gear and pinion backlash.
   • Check the backlash in 4 equally spaced positions around the differential ring gear.
   • The tooth contact pattern can move only by adjusting backlash. The tooth contact pattern can move only in the direction of heel-to-toe and toe-to-heel. Depth of the tooth contact pattern is not adjustable. Contact Spicer Service at 1-800-826-4357 for assistance if you are unable to establish an acceptable tooth contact pattern within the limits of backlash.
Fig 2: Checking Differential Ring Gear And Pinion Backlash
Courtesy of FORD MOTOR CO.
3. Remove the bolt and the rear anti-lock brake sensor.
Fig 3: Identifying Rear Anti-Lock Brake Sensor
Courtesy of FORD MOTOR CO.
4. Remove the 2 adjusting ring cotter pins.
Fig 4: Locating Adjusting Ring Cotter Pins
Courtesy of FORD MOTOR CO.
5. Loosen, but do not remove, the 6 bearing cap bolts.
Fig 5: Differential Bearing Cap Bolts, Differential Bearing Caps, And Adjusting Rings
Courtesy of FORD MOTOR CO.
6. Relieve the bearing preload.
   • Loosen each differential bearing adjusting ring.
Fig 6: Loosening Differential Bearing Adjusting Ring
Courtesy of FORD MOTOR CO.
7. Remove the 6 bearing cap bolts, 2 bearing caps and 2 adjusting rings.
Fig 7: Differential Bearing Cap Bolts, Differential Bearing Caps, And Adjusting Rings
Courtesy of FORD MOTOR CO.
8. Carefully lift the differential subassembly out of the carrier.
9. Inspect the differential side bearing surfaces and differential side bearing cups for pitting, wear or overheating. Install new components as necessary.
Fig 8: Inspecting Differential Side Bearing Surfaces And Differential Side Bearing Cups
Courtesy of FORD MOTOR CO.
10. Using the Front Wheel Hub Remover/Installer, Step Plate and Bearing Puller, remove the differential side bearings if worn or damaged.
Fig 9: Removing Differential Side Bearings
Courtesy of FORD MOTOR CO.
11. Remove the 12 ring gear bolts.
Fig 10: Differential Ring Gear Bolts
Courtesy of FORD MOTOR CO.
12. Place the differential assembly in a suitable press supported on the ring gear.
NOTE: The differential case will fall after separation. Support the case so it will not result in damage to the component or equipment.
NOTE: It should not require more than 3 tons of press load to separate the ring gear from the differential case.
NOTE: It may be necessary to press in more than one position to free the ring gear from the case.
13. The press arbor will push on the differential ring gear bolt to separate the ring gear half of the differential from the cross shaft half of the assembly.
Fig 11: Pressing Differential Ring Gear Bolt To Separate Ring Gear
Courtesy of FORD MOTOR CO.
NOTE: Discard the anti-lock speed sensor ring if separating it from the ring gear side case half.
14. If necessary, remove the anti-lock speed sensor ring.
Fig 12: Identifying Anti-Lock Speed Sensor Ring
Courtesy of FORD MOTOR CO.
NOTE: Alkaline cleaning solutions will damage machine surfaces. Use only emulsion cleaners or petroleum-based cleaning solvents.
NOTE: Use soft, clean, lintless towels to dry the components.
NOTE: After drying, lightly coat the parts with rust inhibitor or clean lubricant to prevent damage from corrosion. Wrap all parts that are going to be in storage for a prolonged period in wax paper.
NOTE: For Truetrac® differentials, submerge the entire differential assembly in a suitable solvent to wash away contaminants from within the housing.
15. Clean and dry the components.
16. The Truetrac® differential assembly is non-repairable. Discard the entire assembly if it is worn or damaged.
Fig 13: Truetrac(R) Differential Assembly
Courtesy of FORD MOTOR CO.

S110 axles 

17. With a conventional differential, lift out the side gear.
Fig 14: Identifying Outer Side Gear
Courtesy of FORD MOTOR CO.
18. Remove the differential pinion cross shaft lock pin.
Fig 15: Locating Differential Pinion Cross Shaft Lock Pin
Courtesy of FORD MOTOR CO.
NOTE: Discard all gears in sets if one or more sustains wear or damage or damage to components may occur.
19. Remove the pinion cross shaft.
Fig 16: Identifying Pinion Cross Shaft
Courtesy of FORD MOTOR CO.
20. Remove the 2 pinion gears and pinion thrust washers.
21. Remove the inner side gear and thrust washer.
Fig 17: Identifying Inner Side Gear And Thrust Washer
Courtesy of FORD MOTOR CO.

S130 axles 

22. Remove the outer side gear.
Fig 18: Removing Outer Side Gear
Courtesy of FORD MOTOR CO.
23. Remove the differential shaft lock pins by turning the differential case opening facing down. Using a hammer, lightly tap the side of the case to free the lock pins.
Fig 19: Removing Differential Shaft Locking Pins
Courtesy of FORD MOTOR CO.
24. Remove the lock pins.
Fig 20: Removing Locking Pins
Courtesy of FORD MOTOR CO.
25. Remove the halfshaft pinion shafts, pinions and washers.
    1. Remove the halfshaft.
    2. Remove the pinion and washer.
Fig 21: Removing Halfshaft Pinion Shafts, Pinions And Washers
Courtesy of FORD MOTOR CO.
26. Remove the full shaft pinion shaft, pinions and washers.
Fig 22: 1st Pinion Gear Thrust Washer And Pinion Gear On Pinion Cross Shaft
Courtesy of FORD MOTOR CO.
27. Remove the inner side gear and thrust washer.
Fig 23: Identifying Inner Side Gear And Thrust Washer
Courtesy of FORD MOTOR CO.