The 1993 Chevrolet Lumina came equipped with conventional (non-antilock) brakes. Pressure on the brake pedal is augmented by a power brake booster, which uses engine vacuum to increase the braking pressure at the master cylinder. Front and rear brakes are divided into separate circuits by the master cylinder. Rigid metal brake lines carry pressurized fluid from the master cylinder to the brake calipers.
The rigid brake lines are mated to short, rubber brake hoses near the calipers to absorb steering and driving motions. Metal brake lines are vulnerable to being kinked and damaged, and the rubber sections can rupture or delaminate internally and must be replaced.
Tools Used: Tools, Wrench set, Flare nut wrench set, Pliers, Replacement brake hose
Replace Brake Lines
Disconnect the brake lines from the brake hoses. Hold the nut on the rubber hose side of the connector with a back-up wrench. Loosen and remove the flare nut on the rigid line side with a flare nut wrench. Remove the U-clip from the support bracket with a pair of pliers. Slide the rubber hose fitting from its locating bracket.
Remove the rubber hose from the caliper. Unscrew the banjo bolt from the caliper and pull the banjo fitting from the caliper. Discard both of the copper crush-washers on the banjo fitting.