Ford F150 Pickup. Manual - part 559

Fig. 31: Marking Pinion Flange In Relation To Drive Pinion Stem 
Courtesy of FORD MOTOR CO. 

12. Using the special tool, remove the pinion flange. 

 

2003 Ford Pickup F150 

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

  

Fig. 32: Removing Pinion Flange 
Courtesy of FORD MOTOR CO. 

Installation 

All Vehicles 

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

Fig. 33: Aligning Pinion Flange With Drive Pinion Shaft 
Courtesy of FORD MOTOR CO. 

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

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

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. 34: Installing Pinion Flange 
Courtesy of FORD MOTOR CO. 

4. 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. 35: Installing Pinion Nut 
Courtesy of FORD MOTOR CO. 

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