Instead of repacking, replacement is strongly recommended. Wheel bearings are relatively inexpensive compared to the potential cost of repairs or an accident caused by bearing failure. Repacking often only provides a temporary solution, and the existing bearings might have sustained unseen damage.
Here's a breakdown of why repacking is discouraged and what's involved in replacement:
Why not repack?
* Sealed Bearings: Many modern vehicles, including likely your Buick LeSabre (depending on the year), use sealed wheel bearings. These are not designed to be repacked; they're intended to be replaced as a unit. Attempting to repack a sealed bearing is likely to damage it beyond repair.
* Complexity: Removing and reinstalling wheel bearings on a car requires specialized tools like a bearing race installer and remover, a torque wrench, and potentially a wheel hub puller. The process involves removing the brake caliper, rotor, and potentially other components.
* Precision: Proper bearing preload is crucial for safe and reliable operation. Incorrect preload can lead to premature wear and failure. Getting this right requires experience and the correct tools.
* Risk of Damage: Improper handling during removal or installation can easily damage the bearing, axle, or other related parts, leading to much more expensive repairs.
If you choose to replace (which is highly recommended):
1. Consult a Repair Manual: Find a repair manual specific to your year and model of Buick LeSabre. This will provide detailed instructions and diagrams.
2. Gather Tools: You'll need a jack, jack stands, wheel chocks, socket set, torque wrench, appropriate bearing race tools, possibly a hub puller, and new wheel bearings.
3. Professional Help: Unless you're experienced in automotive repair, it's strongly advised to take your car to a qualified mechanic. The cost of replacement will be far less than the potential damage from an improperly performed repair.
In short, while technically *possible* to attempt repacking (if your LeSabre has non-sealed bearings – check your repair manual), replacing the wheel bearings is the far safer, more reliable, and cost-effective solution.
