Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Brake Bleeding: Service and Repair
Master Cylinder Bleeding
THIS PROCEDURE CAN BE PERFORMED WITH MASTER CYLINDER ON OR OFF VEHICLE.
1. Disconnect brake lines at master cylinder, if necessary.
2. Connect suitable lengths of brake lines to master cylinder and immerse other ends of lines in master cylinder reservoirs.
3. Apply master cylinder pushrod or brake pedal with full strokes until air bubbles have disappeared in reservoirs. It may require 20-30 applications
to fully eliminate air bubbles.
4. Remove bleeding lines from master cylinder, then install master cylinder on vehicle, if necessary, and connect brake lines.
5. Fill the reservoir. Normal bleeding procedures should be followed after the master cylinder is installed.
For additional information see Bench Bleeding Notes. See: Hydraulic System/Brake Master Cylinder/Fundamentals and Basics
