Ford F150 Pickup. Manual - part 534

Fig. 116: Installing Right Side Bearing Cap 
Courtesy of FORD MOTOR CO. 

8. Rotate the differential case to make sure it rotates freely. 

 

2003 Ford Pickup F150 

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

  

Fig. 117: Rotating Differential Case 
Courtesy of FORD MOTOR CO. 

Measuring For Backlash 

9. Using the special tool, measure ring gear backlash. 

z

If the backlash is within specification, refer to Backlash Within Specification . The specification 
shown is the full allowable range. For the preferred range, refer to SPECIFICATIONS .  

z

If a zero backlash condition occurs, refer to Zero Backlash .  

z

If the backlash is not within specification, refer to Backlash Not Within Specification . 

 

2003 Ford Pickup F150 

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

  

Fig. 118: Checking Backlash 
Courtesy of FORD MOTOR CO. 

Zero Backlash 

10. If a zero backlash condition occurs, add a 0.50-mm (0.020-inch) shim to the RH side and subtract 0.50 

mm (0.020 inch) from the LH side to allow backlash indication. Check backlash. Repeat Step 9 . 

 

2003 Ford Pickup F150 

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

  

Fig. 119: Zero Backlash Conditions Table (1 Of 2) 
Courtesy of FORD MOTOR CO. 

 

2003 Ford Pickup F150 

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