BLEEDING PROCEDURES Complete Brake System Before bleeding system, exhaust all vacuum from power unit by depressing brake pedal several times. Bleed master cylinder using bleeder screws (if equipped). Bleed wheel cylinders and calipers in sequence. See BLEEDING SEQUENCE table.
Master Cylinder (Bench Bleeding) 1. Bench bleed master cylinder before installation. Place master cylinder in soft-jaw vise. Install bleeder tubes in both outlets of master cylinder. See Fig. 1 . 2. Fill master cylinder with clean brake fluid. Ensure ends of bleeder tubes are submerged in brake fluid. 3. Using a wood dowel, apply and release master cylinder until no air bubbles exist in brake fluid flow. Leave bleeder tubes installed on master cylinder during installation. Install master cylinder. Remove bleeder tubes, and connect brakelines. Bleed brake system if necessary.
Vacuum Bleeding Fill master cylinder. Install vacuum bleed equipment to first bleeder valve to be serviced. Open bleeder valve 3/4-1 turn. Depress vacuum pump, and pull fluid into reservoir jar. Bleed each bleeder valve in sequence. See BLEEDING SEQUENCE table. Pressure Bleeding 1. Clean master cylinder cap and surrounding area. Remove cap. With pressure tank at least 1/2 full, connect it to master cylinder using appropriate adapters. Attach bleeder hose to first bleeder valve to be serviced. See BLEEDING SEQUENCE table. 2. Submerge other end of hose in clean glass jar partially filled with clean brake fluid. Position metering valve properly before pressure bleeding. 3. Open release valve on pressure bleeder. Follow equipment manufacturer's pressure bleeding
CAUTION: When using pressure bleeding method, press and hold in valve stem on combination valve to properly bleed brake system. instructions, or see PRESSURE BLEEDER SETTINGS table. Open bleeder screw 3/4-1 turn, and note fluid flow. 4. Close bleeder screw when fluid flow is free of air bubbles. Repeat procedure on remaining wheels in proper sequence. Check brake pedal operation after bleeding. 5. Remove pressure bleeding equipment, and valve retainer from metering valve. Ensure master cylinder is full of fluid. Pressure bleeding is at 10-15 PSI all models. Manual Bleeding 1. Fill master cylinder. Install bleeder hose on first bleeder valve to be serviced. See BLEEDING SEQUENCE table. Submerge other end of hose in clean glass jar partially filled with clean brake fluid. 2. Open bleeder valve 3/4-1 turn. Depress brake pedal slowly through full travel. Close bleeder valve. Release pedal. Repeat procedure until fluid flow is free of air bubbles.
NOTE: When bleeding disc brakes, air may tend to cling to caliper walls. Lightly tap caliper while bleeding to aid in removal of air. NOTE: When bleeding brake system manually, ensure bleeder valve is closed when brake pedal is released.
Sunday, April 12th, 2009 AT 9:36 AM