Section 05-03C: Wheel Hubs and Bearings, Front Wheels, 4-Wheel Drive
1996 F-150, F-250, F-350, and Bronco Workshop Manual
DIAGNOSIS AND TESTING
Symptom Chart — Front Axle Noises In Four-Wheel Drive
FRONT AXLE NOISES IN FOUR-WHEEL DRIVE
Condition
Possible Source
Action
Ratcheting or Buzzing Noise in Front Axle in Two-Wheel Drive, Shortly After Four-Wheel Drive Usage
Right or left side hublock.
REPLACE hublocks as necessary. REFER to
Pinpoint Test A
.
Popping Sound from Front Axle When in Four-Wheel Drive
Right or left side hublock.
REPLACE hublocks as necessary and INSPECT associated camming. REPLACE camming if damaged.
Ratcheting Noise Upon Self-Engagement of Automatic Hublocks
High axle motoring torque.
Refer to
Component Test
in this section.