Question 1

How to Perform a Brake Pad Replacement on Buick LeSabre?

Accepted Answer

First check the brake master cylinder reservoir fluid level before working on the front brake pads. Keep the fluid at midpoint if the tank shows half-full to minimum marks, but drain to midpoint if the tank has more fluid. Safely position the vehicle, then unlock the tire from the wheel before removing the tire and wheel assembly. Secure the c-clamp on the brake caliper body with its ends against the caliper rear and outer Brake Pad until the caliper piston moves through the brake rotor. You must take out the c-clamp and bottom brake caliper pin bolt after positioning heavy mechanic's wire underneath to maintain the hydraulic flexible brake hose's safety. Push the caliper body upward until it stays in place and apply the c-clamp once more to compress the piston fully by pressing the clamp against the piston with an old inner pad or wood block. Pull the c-clamp and old pad before you separate the inboard and outboard brake pads from the caliper bracket. Next inspect both Brake Pad retainers while working. Look for signs of damage on the suspension boots holding the caliper bolt while checking the pin bolts for rust patches and changing them when required plus examining the rubber piston boot condition for replacement. Put high temperature silicone lube on front brake caliper pin bolts before installing brake pads and pads retainer onto the caliper bracket then pushing the caliper down over the pads. Install the bottom caliper pin bolt with 85 nm (63 ft. Lbs.) force. Place the wheel back onto the vehicle, lower the vehicle down and press the Brake Pedal for 2/3 of its range before releasing it with the engine off. Hold the Brake Pedal down for 15 seconds many times until you find a strong Brake Pedal position which sets the brake pistons and brake pads correctly. After filling the brake cylinder with proper fluid top off torque the brake caliper bolt takes the wheel off and applies brake pressure then burns pad surfaces against the rotor.

Question 2

How to replace the rear disc brake pads on Buick LaCrosse?

Accepted Answer

Check the brake master cylinder reservoir fluid level before working on the brake pads. If fluid reaches the halfway point between maximum and minimum levels you can start without fluid removal. But lowering the fluid to the middle point is needed if the reservoir shows higher fluid levels. Lift your car after putting it on stands. Take off the wheel assembly and tire from the vehicle. After detaching the sensor harness from the Control Arm pull off both caliper bolts. Use wire to hold the brake caliper steady then gently remove its bracket attachment without disconnecting the hydraulic hose. Take the pads from inside and outside areas of the Brake Caliper Bracket. Carefully examine both ends of the brake caliper boot and wash its pad anchors before testing Brake Pad retainers. Also inspect the piston boot for defects. Twist the Brake Caliper Piston spanner clockwise until it stops at the bottom of the brake caliper bore (utilize Mac(R) tools dbc 25 c 2500 ma disc brake caliper tool set or an equivalent). Position the indents on the piston face with the notch on the back of the inboard brake pads before inserting the Brake Pad retainers into the Brake Caliper Bracket. Push the caliper over the steering arm using new pads while placing the pad with metal wear indicator on the inboard side. Also replace any damaged boots on the bracket of the steering arm. Reinstall the wss harness onto the lower Control Arm and fasten the brake caliper bolts to 34 n.m (25 lb ft). Install the tire wheel assembly then lower the vehicle. After switching the engine off gradually push the brake pedal two-thirds of its range followed by releasing it slowly. Press the brake pedal twice for 15 seconds with breaks to allow brake pistons and pads to take their position properly. Complete the brake master cylinder reservoir to the correct amount and perform Brake Pad and rotor polishing.

Question 3

How to replace the rear brake pads on Buick Regal?

Accepted Answer

Start by checking the brake master cylinder fluid level before work. Lower the fluid amount to reach the midpoint when the reservoir shows more fluid than required. Lift the vehicle to its support point and take off the rear tire and wheel set from the car. Install one hand-tightened lug nut over the rotor to keep it on the hub and use a c-clamp to push down on the caliper Piston for space. Lower the caliper gently by moving its top bolt to view the brake pads without taking apart the entire assembly. Carefully remove both brake pads from their brackets and also take away the two holding clips and check the caliper bracket nuts. Substitute any damaged hardware found. Look at the dust boot inside the caliper as well as examine the caliper bolts for breakage or rust. Replace these parts with fresh items when necessary. Place the Piston at the bottom of the caliper bore with a c-clamp but keep it away from the Piston and boot. Mount the two retainers to both sides of the caliper bracket with attention to the wear sensor placement on the outside pad at the rear of the wheel during normal driving direction. Thread the pads (9 and 10) onto the caliper bracket after you position the caliper upwards on the pads. Apply silicone grease to both bolt parts before putting in the upper caliper bolt and securing it at 44 nm (32 ft. Lbs.) torque. Put the new tire and wheel on the axle hub then match the tire marks while lowering the car. During engine shutdown gradually push the Brake Pedal to 2/3 position and release it slowly several times to correctly position brake caliper parts. Complete the filling procedure of the brake reservoir and smooth out Brake Pad-to-rotor contact.

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