Ford F-150 1999 Workshop Manual page 2

1999 F-150/250 Workshop Manual
3. Install the special tool in a suitable vise.
4. Install the differential case on the tool.
5. NOTE: Apply a small amount of grease to the centering hole of the special tool.
Install the special tool in the bottom side gear bore.
6. Install the nut in the upper differential side gear (4236). Hold the nut in position while installing the hex screw. Tighten the hex-head screw until contact is made with the step plate.
7. NOTE: The dowel bar is used to keep the nut from turning when the forcing screw is tightened.
Insert a suitable dowel bar in the hole of the nut. Tighten the forcing screw to force the differential side gear away from the differential pinion gears (4215).
8. WARNING: Keep fingers/hands away from pinion gears when rotating the differential case with the differential rotating tool.
NOTE: Differential pinion thrust washers (4230) cannot be removed independently of the differential pinion gears and so must be removed simultaneously with the differential pinion
gears.
Insert the special tool in the pinion shaft bore, and turn the differential case to "walk" the differential pinion gears and differential pinion thrust washers out to the differential case
windows.
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11/3/2009