Ford F150 Pickup. Manual - part 603

Fig. 31: Tightening Pinion Nut 
Courtesy of FORD MOTOR CO. 

6. Position the driveshaft and align the marks on the pinion flange. 

 

2003 Ford Pickup F150 

2003 DRIVELINE/AXLES Rear Drive Axle/Differential - Ford 9.75-inch - F150 Pickup

  

Fig. 32: Aligning Index Marks On Driveshaft & Pinion Flange 
Courtesy of FORD MOTOR CO. 

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

pinion flange pilot. To make sure that the yoke seats squarely on the 
flange, tighten the bolts evenly in a cross pattern as shown.

 

2003 Ford Pickup F150 

2003 DRIVELINE/AXLES Rear Drive Axle/Differential - Ford 9.75-inch - F150 Pickup

  

Fig. 33: Driveshaft Flange Bolt Tightening Sequence 
Courtesy of FORD MOTOR CO. 

7. Install the driveshaft.  

8. Install the brake discs and calipers. For additional information, refer to REAR BRAKE DISC and 

REAR DISC BRAKE CALIPER & PADS .  

DRIVE PINION SEAL 

Special Tool(s) 

 

2003 Ford Pickup F150 

2003 DRIVELINE/AXLES Rear Drive Axle/Differential - Ford 9.75-inch - F150 Pickup

  

Fig. 34: Identifying Special Tool(s) 
Courtesy of FORD MOTOR CO. 

Removal 

1. Remove the pinion flange (4851). For additional information, refer to DRIVE PINION FLANGE .  

2. Force up on the metal flange of the rear axle drive pinion seal (4676). Install gripping pliers and strike 

with a hammer until the pinion seal is removed. 

 

2003 Ford Pickup F150 

2003 DRIVELINE/AXLES Rear Drive Axle/Differential - Ford 9.75-inch - F150 Pickup