F 250 4WD Super Duty V10-6.8L VIN S (2001)
Hublock: Customer Interest
Drivetrain - 4X4 Hub Non-Engagement/Disengagement
Article No.
03-14-3
07/21/03
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SUSPENSION - 4X4 WHEEL HUB
NON-ENGAGEMENT/DISENGAGEMENT
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AXLE - 4X4 WHEEL HUB
NON-ENGAGEMENT/DISENGAGEMENT
FORD:
2000-2003 EXCURSION, SUPER DUTY F SERIES
ISSUE
Some 2000-2003 F-250/350 and Excursion 4X4 equipped vehicles may experience a condition where the front hubs will not engage or disengage
properly. It is possible that the vacuum necessary to operate the hub is being restricted.
ACTION
Insure that the flow of vacuum is not being restricted through the hub. Perform Workshop Manual diagnosis per Section 308-07-A Pin Point Test G. If
no problems are found in Pin Point Test G, perform the following procedure to relieve restriction in the vacuum path through the wheel end.
SERVICE PROCEDURE
1.
Remove both wheel hub assemblies (See WHEEL HUB removal procedure under Section 204-01B: FRONT SUSPENSION).
2.
Remove thrust washer located between the wheel hub assembly and the axle constant shaft (This gray plastic thrust washer is approximately 2-3/4"
OD, and has four slots on the back side).
NOTE
KNUCKLE SEAL DOES NOT NEED TO BE REPLACED FOR THIS PROCEDURE.
3.
File four (4) 1/8" to 1/4" "KEYWAYS" into the inside diameter of the thrust washer (Figure 1).
NOTE
THE THRUST WASHER REQUIRES ONLY A LIGHT FILM OF GREASE. REMOVE ANY EXCESSIVE GREASE FROM WASHER, AND
CAVITY BEFORE INSTALLATION.
