Chevrolet Sonic Repair Manual: Brake System External Leak Inspection

Chevrolet Sonic Repair Manual / Chassis / Brakes / General / Brake System External Leak Inspection

Warning:

Refer to Brake Fluid Irritant Warning.

Caution:

Refer to Brake Fluid Effects on Paint and Electrical Components Caution.

In order to inspect for external brake fluid leaks, first inspect the fluid level in the master cylinder.
While a slight brake fluid level drop can be considered a normal condition due to brake lining wear, a very low level may indicate a brake fluid leak in the hydraulic system.
If the fluid level is abnormally low, adjust the brake fluid level. Refer to Master Cylinder Reservoir Filling.
Start the engine and allow it to idle.
Apply constant, moderate foot pressure to the brake pedal.
If the brake pedal gradually falls away while under foot pressure, there may be a brake fluid leak.
Turn the ignition OFF.
Visually inspect the following brake system components for brake fluid leaks, excessive corrosion, and damage. Give particular attention to all brake pipe and flexible hose connections to ensure that there are not any slight brake fluid leaks – even though the brake pedal may feel firm and hold steady:

Master cylinder brake pipe fittings
All brake pipe connections
Brake pipes
Brake hoses and connections
Brake calipers and/or wheel cylinders

While slight dampness around the master cylinder reservoir can be considered acceptable, brake fluid leaking from any of the brake system components requires immediate attention. If any of these components exhibit signs of brake fluid leakage, repair or replace those components. After the repair or replacement, reinspect the hydraulic brake system to assure proper function.

Brake Pressure Modulator Valve Replacement

Removal Procedure Warning: Refer to Brake Fluid Irritant Warning. Caution: Refer to Brake Fluid Effects on Paint and Electrical Components Caution. Caution: Always ...

Brake System Warning Light

The vehicle brake system consists of two hydraulic circuits. If one circuit is not working, the remaining circuit can still work to stop the vehicle. For normal braking performance, both circuits ...

Other materials:

Body Hinge Pillar Lower Reinforcement Replacement
Removal Procedure Warning: Refer to Approved Equipment for Collision Repair Warning. Disable the SIR system. Refer to SIR Disabling and Enabling. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection. Remove all ...

Heater and Air Conditioning Control Replacement
Heater and Air Conditioning Control Replacement Callout Component Name Preliminary Procedures Remove I/P center bezel. Refer to Instrument Panel Center Molding Replacement. Remove front floor shifter bezel. Refer to Front ...

File menu
The file menu in the Nissan Armada driving recorder system allows users to conveniently manage all recorded content, including photos and video files. Through this interface, you can view, organize, and delete stored media directly from the touchscreen display, making it easy to maintain stora ...

0.006