Chevrolet Equinox Service Manual: Brake System External Leak Inspection

Warning:Refer toBrake Fluid Irritant Warning.

Caution:Refer toBrake Fluid Effects on Paint and Electrical Components Caution.

In order to inspect for external brake fluid leaks, firstcheck the fluid level in the master cylinder.

While a slight brake fluid level drop can be considered anormal condition due to brake lining wear, a very low level mayindicate a brake fluid leak in the hydraulic system.

If the fluid level is abnormally low, adjust the brake fluidlevel. Refer toMaster Cylinder Reservoir Filling.Start the engine and allow it to idle.Apply constant, moderate foot pressure to the brakepedal.

If the brake pedal gradually falls away while under footpressure, there may be a brake fluid leak.

Turn OFF the ignition.Visually inspect the following brake system components forbrake fluid leaks, excessive corrosion, and damage. Give particularattention to all brake pipe and flexible hose connections to ensurethat there are not any slight brake fluid leaks – eventhough the brake pedal may feel firm and hold steady:Master cylinder brake pipe fittingsAll brake pipe connectionsBrake pipesBrake hoses and connectionsBrake calipers and/or wheel cylinders, if equippedWhile slight dampness around the master cylinder reservoircan be considered acceptable, brake fluid leaking from any of thebrake system components requires immediate attention. If any ofthese components exhibit signs of brake fluid leakage, repair orreplace those components. After the repair or replacement,reinspect the hydraulic brake system to assure properfunction.