Ford F-150 1999 Workshop Manual page 3

1999 F-150/250 Workshop Manual
9. Remove the differential pinion gears and differential pinion thrust washers.
10. Remove the differential side gears and differential clutch packs (4947), and tag them RIGHT and LEFT with the shim.
11. CAUTION: When separating the clutch plates and clutch discs, note the sequence in which they are disassembled. They must be reassembled in the same
sequence.
CAUTION: Do not use acids or solvents when cleaning the differential clutch pack. Wipe components with a clean, lint-free cloth only.
Separate the differential clutch discs and clutch plates for cleaning and inspection. Refer to the disassembled view of the limited slip differential case in the Description and Operation
portion of this section.
Assembly
1. Prelubricate each steel clutch plate and soak all friction plates with 118 ml (4 ounces) Additive Friction Modifier C8AZ-19B546-A or equivalent meeting Ford specification EST-
M2C118-A for at least 15 minutes.
2. NOTE: Do not mix the differential clutch packs or shims from one side with the other.
NOTE: The Belleville spring is a dished plate.
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11/3/2009