Ford F150 Pickup. Manual - part 521

Fig. 65: Index Marking Driveshaft Flange & Driveshaft Rear Axle Pinion Flange 
Courtesy of FORD MOTOR CO. 

3. Remove the four rear driveshaft bolts. 

 

2003 Ford Pickup F150 

2003 DRIVELINE/AXLES Rear Drive Axle/Differential - Ford 10.25-inch - F150 Pickup

  

Fig. 66: Removing Rear Driveshaft Bolts 
Courtesy of FORD MOTOR CO. 

CAUTION: The driveshaft centering socket yoke fits tightly on the rear axle 

pinion flange pilot. Never hammer on the driveshaft or any of its 
components to disconnect the yoke from the flange. Pry only in the 
area shown with a suitable tool to disconnect the yoke from the 
flange.

 

2003 Ford Pickup F150 

2003 DRIVELINE/AXLES Rear Drive Axle/Differential - Ford 10.25-inch - F150 Pickup

  

Fig. 67: Disconnecting Driveshaft Centering Socket Yoke From Rear Axle Pinion Flange 
Courtesy of FORD MOTOR CO. 

4. Using a suitable tool as shown, disconnect the driveshaft centering socket yoke from the rear axle pinion 

flange.  

5. Remove the pinion nut. 

z

Use a suitable companion flange holding tool. 

 

2003 Ford Pickup F150 

2003 DRIVELINE/AXLES Rear Drive Axle/Differential - Ford 10.25-inch - F150 Pickup

  

Fig. 68: Removing Pinion Nut 
Courtesy of FORD MOTOR CO. 

6. Remove the rear axle pinion flange, using the special tool. 

z

Remove the rear axle drive pinion seal (4676). For additional information, refer to PINION 
SEAL .  

z

Remove the rear axle drive pinion shaft oil slinger (4670). 

 

2003 Ford Pickup F150 

2003 DRIVELINE/AXLES Rear Drive Axle/Differential - Ford 10.25-inch - F150 Pickup