Lanos S Hatchback L4-1.6L DOHC D-TEC MFI (1999)
Wheel Bearing: Testing and Inspection
Sealed Wheel Bearing Diagnosis
SEALED WHEEL BEARING DIAGNOSIS
Vehicles with anti-lock braking systems have sealed, non-serviceable cartridge bearings in the rear wheels. If any fault is found with a wheel bearing,
it must be replaced.
Wheel Bearing Noise
A road test usually reveals excessive wheel bearing noise. Sealed wheel bearings emit a howling sound when loose or damaged. Wheel bearing noise
is present only when the vehicle is moving. It is constant and unwavering and increases with the speed of the vehicle. If the wheel bearing noise cannot
be positively diagnosed, or if the origin of the noise cannot be determined, perform the following test:
1. Raise and suitably support the vehicle.
2. Spin the wheels using your hand. Check for out-of-round or out-of-balance tires, bent rims, or loose wheel bearings.
3. Spin the rear wheels using a commercial wheel spinner.
4. If a noise can be heard from the passenger compartment, replace the noisy wheel bearing cartridge.
5. Lower the vehicle.
