Brake System - Bleeding

Group: 47

Number: 93-02

Date: July 1, 1993

Subject:
Brake system, bleeding

Model(s):
All All m.y.

Brake system, bleeding

WARNING
Brake fluid is poisonous.

CAUTION
Brake fluid must not come in contact with paintwork.

Brake fluid is hygroscopic, i.e., it absorbs moisture from the surrounding air. Therefore, it must be replaced in the vehicle every two years. Stored brake fluid must be kept in air-tight containers.

Use only new brake fluid which conforms with US specification FMVSS 116 DOT 4.

Do not add or mix DOT 5 silicone type brake fluid with the brake fluid in the vehicle. Severe component corrosion may result. Such corrosion could lead to brake system failure.

Do not re-use fluid removed from the brake fluid reservoir. Water and contaminants In the fluid can cause brake performance problems.

Equipment required:

^ pressure bleeder, US 1116 or equivalent

^ brake fluid container with transparent hose inserted (to check expelled brake fluid for air bubbles)


Vehicles with manual transmission:
If a brake master cylinder has been removed/installed, the clutch slave cylinder must be bled before bleeding the brakes.

^ connect pressure bleeder, US 1116

^ open bleeder screws in prescribed sequence below and assist bleeding process with repeated, slow, forceful pumping of the brake pedal

Bleeding sequence

1 - Brake master cylinder and proportioning valve (ABS only)

2 - Right rear

3 - Left rear

4 - Right front

5 - Left front

6 - Right-rear (re-bleed)






Note
On vehicles with a height-sensitive brake pressure regulator, press the regulator lever (arrow) firmly towards the rear axle when bleeding the rear brakes.

^ after bleeding, fill brake fluid reservoir to MAX mark