F 150 4WD Pickup V8-5.4L Prop SOHC VIN Z (1998)
1
Position the Companion Flange Holding Tool and install the two companion flange holding tool bolts.
2
Loosen the pinion nut.
CAUTION: Before proceeding, place a drain pan under the front axle housing.
8. Remove the front axle universal joint flange.
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With the pinion nut still engaged by a few threads, install the 2-Jaw Puller.
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Remove the front axle universal joint flange.
9. Inspect the front axle universal joint flange for burrs and replace as necessary.
NOTE: Make sure that the surfaces of the front axle universal joint flange have not been damaged during removal. The end of the front axle
universal joint flange that contacts the bearing cone, the nut counterbore and the seal surface must be smooth and free of nicks.
10. Check the splines on the pinion stem to be sure they are free of burrs.
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If burrs are evident, remove them with a fine crocus cloth. Working in a rotating motion, wipe the pinion clean.
INSTALLATION
1. Lubricate the flange yoke seal splines and the seal.
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Use Motorcraft SAE75W90 4x4 Axle Lubricant XY-75W90-QL or equivalent meeting Ford specification WSP-M2C201-A.
2. Align the index marks and position the front axle universal joint flange onto the pinion shaft.
CAUTION: The universal joint flange must never be hammered on or installed with power tools.
3. Using the Companion Flange Replacer, install the front axle universal joint flange.
NOTE: Rotate the pinion occasionally to ensure proper differential pinion bearing seating.
