Ford F150 Pickup. Instruction - part 531

Fig. 104: Installing Differential Bearing Cap Bolts 
Courtesy of FORD MOTOR CO. 

11. Position the special tools. 

1. Rotate the differential case to make sure the differential bearings are correctly seated.  

2. Position the special tools. 

 

2003 Ford Pickup F150 

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

  

Fig. 105: Positioning Special Tools 
Courtesy of FORD MOTOR CO. 

NOTE:

If runout is within specification, install a new ring gear and pinion. If 
runout exceeds specification, the ring gear is true and the concern is due 
to either a damaged differential case or differential bearings. Inspect the 
differential bearings. If the differential bearings are not damaged, replace 
both the differential case and the differential bearings.

 

2003 Ford Pickup F150 

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

  

Fig. 106: Checking Differential Case Runout 
Courtesy of FORD MOTOR CO. 

12. Measure the differential case runout without the ring gear. 

1. Rotate the differential case.  

2. Check and note the differential case runout.  

13. Remove the differential case from the rear axle housing, and remove the differential bearings using the 

special tools. 

 

2003 Ford Pickup F150 

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

  

Fig. 107: Removing Differential Bearings 
Courtesy of FORD MOTOR CO. 

14. Using the special tool, install the new differential bearings on the differential case. 

 

2003 Ford Pickup F150 

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