Ford F150 Pickup. Instruction - part 525

Fig. 81: Checking Seating Of Pinion Bearings 
Courtesy of FORD MOTOR CO. 

Item

Part Number

Description

1

4621

Pinion Bearing - (Outer)

2

205-160

Adapter For 205-S156 (T80T-4020-F43)

3

4630

Pinion Bearing - (Inner)

4

205-227

Aligner, Drive Pinion (T85T-4020-AH2)

5

205-159

Adapter for 205-S 156 (2.1992-Inch Thick) (T80T-4020-F42)

6

205-D038

Gauge Tube (4.1255-Inch O.D.) (D81T-4020-F51)

7

205-226

Depth Gauge/Aligner, Drive Pinion (T85T-4020-AH1)

8

4010

Rear Axle Housing

9

205-111

Adapter for 205-S127 (T76P-4020-A11)

NOTE:

The special tool must be offset to obtain an accurate reading.

 

2003 Ford Pickup F150 

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

  

8. Rotate the special tool several half-turns to ensure correct seating of the pinion bearings, then position the 

special tool as shown.  

9. Install the special tool. 

1. Position the special tool.  

2. Install the differential side bearing caps.  

3. Install the differential side bearing cap bolts.  

Fig. 82: Installing Differential Side Bearing Caps & Bolts 
Courtesy of FORD MOTOR CO. 

NOTE:

Dive pinion bearing adjustment shims must be flat and clean.

NOTE:

A slight drag should be felt for correct shim selection. Do not attempt to 
force the pinion shim between the special tools. This will minimize 
selection of a pinion shim thicker than required, which results in a deep 
tooth contact in the final assembly of integral rear axle assemblies.

 

2003 Ford Pickup F150 

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

  

Fig. 83: Using Drive Pinion Bearing Adjustment Shim As A Gauge 
Courtesy of FORD MOTOR CO. 

10. Use a drive pinion bearing adjustment shim as a gauge shim selection. 

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After the correct shim thickness has been determined, remove the special tools from the rear axle 
housing.  

11. Using a press and the special tools, press the pinion bearing until it is firmly seated on the pinion and 

pinion shim. 

 

2003 Ford Pickup F150 

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

  

Fig. 84: Installing Pinion Bearing 
Courtesy of FORD MOTOR CO. 

 

2003 Ford Pickup F150 

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