G8 V6-3.6L (2008)
1. Inspect the brake system for external leaks. Refer to Brake System External Leak Inspection (See: Hydraulic System/Testing and
Inspection/Component Tests and General Diagnostics/Brake System External Leak Inspection) .
2. Pressure bleed the hydraulic brake system in order to purge any air that may still be trapped in the system.
32. Turn the ignition ON, engine OFF. Check to see if the brake system warning lamp is illuminated.
Important: DO NOT allow the vehicle to be driven until it is diagnosed and repaired.
33. If the brake system warning lamp is illuminated, refer to Symptoms - Hydraulic Brakes (See: Hydraulic System/Testing and Inspection/Symptom
Related Diagnostic Procedures/Symptoms - Hydraulic Brakes) .
Pressure
Hydraulic Brake System Bleeding (Pressure)
Tools Required
*
J 29532 Diaphragm Pressure Bleeder
*
J 35589-A Brake Pressure Bleeder Adapter
Caution: Refer to Safety Glasses Caution (See: Service Precautions/Technician Safety Information/Safety Glasses Warning) .
Caution: Refer to Vehicle Lifting Caution (See: Maintenance/Vehicle Lifting/Service Precautions) .
Caution: Refer to Brake Dust Caution (See: Service Precautions/Technician Safety Information/Brake Dust Caution) .
Caution: Refer to Brake Fluid Caution (See: Service Precautions/Vehicle Damage Warnings/Brake Fluid Caution) .
Caution: Refer to Brake Fluid Irritant Caution (See: Service Precautions/Technician Safety Information/Brake Fluid Irritant Caution) .
Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice (See: Service Precautions/Vehicle Damage Warnings/Brake
Fluid Effects on Paint and Electrical Components Notice) .
1. Place a clean suitable container beneath the brake master cylinder to catch brake fluid spills.
Important: "When adding fluid to the brake master cylinder reservoir, use only Super DOT 4 or DOT 4 Plus brake fluid from a clean,
sealed brake fluid container. The use of any type of fluid other than the recommended type of brake fluid may cause contamination which
could result in damage to the internal rubber seals and/or rubber linings of hydraulic brake system components."
Important: With the ignition OFF and the brakes cool, apply the brakes 3-5 times, or until the brake pedal becomes firm, in order to
deplete the vacuum brake booster power reserve.
2. Deplete the vacuum brake booster power reserve.
3. If you have performed a brake master cylinder bench bleed, disconnected the brake pipes from the master cylinder or the Brake Pressure
Modulator Valve (BPMV), you MUST perform the following steps to bleed air at the ports of the hydraulic component:
1. Clean the outside of the reservoir on and around the reservoir cap prior to removal.
2. With the brake pipes installed securely to the master cylinder or BPMV, loosen and separate one of the brake pipes from the port of the
component:
For the BPMV, perform these steps in the sequence of system flow; begin with the fluid feed pipes from the master cylinder.
3. Allow a small amount of brake fluid to gravity bleed from the open port of the component.
4. Reconnect the brake pipe to the component and tighten securely.
5. With the aid of an assistant slowly depress the brake pedal fully and maintain steady pressure on the pedal.
6. Loosen the same brake pipe to purge air from the open port of the component.
7. Tighten the brake pipe, then have the assistant slowly release the brake pedal.
8. Wait 15 seconds, then repeat steps 3.3-3.7 until all air is purged from the same port of each component.
9. With the brake pipe installed securely to the master cylinder or BPMV, and after all air has been purged from the first port of the component
that was bled, loosen and separate the next brake pipe from the component, then repeat steps 3.3-3.8 until each of the ports on the component
has been bled.
10. After completing the final component port bleeding procedure, make sure that each of the brake pipe to component fittings is correctly
tightened.
4. Clean the outside of the reservoir on and around the reservoir cap.
5. Remove the master cylinder reservoir cap and diaphragm.
6. Fill the brake master cylinder reservoir to the maximum-fill level with brake fluid from a clean, sealed brake fluid container.
7. Set up the brake pressure bleeder following the manufacturer's instructions.
8. Open the brake pressure bleeder fluid valve to allow pressurised brake fluid to enter the brake system.
Important: Any brake fluid leaks identified require repair prior to completing this procedure.
