Ford F150 Pickup. Instruction - part 569

Fig. 73: Installing Drive Pinion Assembly 
Courtesy of FORD MOTOR CO. 

14. Lubricate the pinion flange splines with rear axle lubricant. 

NOTE:

Disregard the scribe marks if a new pinion flange is being installed.

 

2003 Ford Pickup F150 

2003 DRIVELINE/AXLES Rear Drive Axle/Differential - Ford 8.8-Inch Ring Gear - F150 Pickup

  

Fig. 74: Installing Pinion Flange Aligning With Drive Pinion Shaft 
Courtesy of FORD MOTOR CO. 

15. Align the pinion flange with the drive pinion shaft.  

16. With the drive pinion in place in the rear axle housing, install the pinion flange using the special tool. 

 

2003 Ford Pickup F150 

2003 DRIVELINE/AXLES Rear Drive Axle/Differential - Ford 8.8-Inch Ring Gear - F150 Pickup

  

Fig. 75: Installing Pinion Flange 
Courtesy of FORD MOTOR CO. 

17. Position the new pinion nut. 

 

2003 Ford Pickup F150 

2003 DRIVELINE/AXLES Rear Drive Axle/Differential - Ford 8.8-Inch Ring Gear - F150 Pickup

  

Fig. 76: Installing Pinion Nut 
Courtesy of FORD MOTOR CO. 

18. Using the special tool, hold the pinion flange and tighten the pinion nut. 

z

Rotate the pinion occasionally to make sure the cone and roller bearings are seating correctly.  

z

Install a Nm (inch-pound) torque wrench on the pinion nut.  

z

Rotating the pinion through several revolutions, take frequent cone and roller bearing torque 
preload readings until the original recorded preload reading is obtained. 

CAUTION: Under no circumstances is the pinion nut to be backed off to reduce 

preload. If reduced preload is required, a new collapsible spacer and 
pinion nut must be installed.

CAUTION: Remove the special tool while taking preload readings with the Nm 

(inch-pound) torque wrench.

 

2003 Ford Pickup F150 

2003 DRIVELINE/AXLES Rear Drive Axle/Differential - Ford 8.8-Inch Ring Gear - F150 Pickup