Aviator 2WD V8-4.6L DOHC (2003)
Wheel Hub: Customer Interest
Drivetrain - Rear Axle Hub Bearing Noise
TSB 05-25-8
12/26/05
NOISE FROM REAR WHEEL HUB BEARINGS
FORD:
2002-2005 Explorer
LINCOLN:
2003-2005 Aviator
MERCURY:
2002-2005 Mountaineer
This article supersedes TSB 05-17-10 to update the Service Procedure.
ISSUE
Some 2002-2005 Explorer 4dr/Mountaineer and 2003-2005 Aviator vehicles may exhibit a noise from the rear wheel hub bearings. Previous service
procedures required service replacement of the wheel hub bearing assembly, base part (1109). This new service procedure allows replacement at a lower
service level of the wheel bearing, base part (1215) to repair the noise condition.
ACTION
Replace the rear hub bearing and wheel bearing retainer ring. Refer to the following Service Procedure.
SERVICE PROCEDURE
CAUTION
SUSPENSION FASTENERS ARE CRITICAL.
WHEN REPLACING SUSPENSION FASTENERS USE ORIGINAL EQUIPMENT FASTENERS, OR FASTENERS OF EQUIVALENT QUALITY
AND DESIGN. DO NOT INSTALL A REPLACEMENT FASTENER OF LESSER QUALITY OR DIFFERENT DESIGN. PROPER TORQUE
VALUES MUST BE OBSERVED DURING REASSEMBLY TO ENSURE CORRECT RETENTION OF ALL COMPONENTS. MAKE SURE THE
FASTENERS ARE REINSTALLED IN THE SAME ORIENTATION AS WHEN REMOVED.
CAUTION
DO NOT LOOSEN THE AXLE WHEEL HUB RETAINER UNTIL THE WHEEL AND TIRE ARE REMOVED FROM THE VEHICLE. WHEEL
BEARING DAMAGE WILL OCCUR IF THE WHEEL BEARING IS UNLOADED WITH THE WEIGHT OF THE VEHICLE APPLIED.
NOTE
HAVE AN ASSISTANT PRESS THE BRAKE PEDAL TO KEEP THE AXLE FROM TURNING.
1.
Remove the axle-to-wheel hub retainer nut and washer (Figure 1).
Discard the nut. When reinstalling at end of procedure, tighten to 203 lb-ft (275 N.m).