You'll probably need:
* A 1/2" drive socket wrench and sockets: This is the most likely size for the caliper bracket bolts, but it could also be 3/8". You may need several different socket sizes. Sizes like 13mm, 14mm, and 15mm are common suspects for caliper bolts on various cars. Don't assume a specific size; check first.
* Possibly a wrench for caliper guide pins: These pins, which help the caliper slide, often require a different size than the bracket bolts. Often a 10mm or 11mm wrench will fit.
Before you start:
1. Consult a repair manual: A Chilton's or Haynes repair manual specific to your 1997 Mercury Sable GS is crucial. It will show you exactly which bolts to remove, the sizes required, and the proper procedure.
2. Inspect the calipers: Look closely at the calipers to see what types of fasteners are used. This visual inspection will give you the best clue as to the correct wrench size.
3. Start small: If you're unsure, begin with smaller sockets/wrenches and work your way up. Avoid forcing anything; this can strip threads or damage parts.
Safety First:
* Always use jack stands: Never work under a car supported only by a jack.
* Secure the vehicle: Engage the parking brake and chock the wheels.
* Wear safety glasses: Brake dust can get in your eyes.
Don't guess. Take your time, refer to a repair manual, and visually inspect your vehicle to determine the proper sizes. Rushing can lead to damage or injury.
