1999 Saturn SL1/SC1/SW1
SL,SL1, SC1, SW1, SL2, SC2, SW2 (VIN Z) Service Manual Repair Instructions
Brakes
Hydraulic Brakes
| Document ID: 868351
Hydraulic Brake System Bleeding (Manual)
Fill the master cylinder reservoir with brake fluid. Keep the reservoir at least half full during the bleeding procedure. Notice: Brake fluid is corrosive to painted surfaces. Take care not to allow brake fluid to contact painted surfaces on vehicle. Notice: Use only DOT 3 brake fluid from a clean, sealed container. Do not use any fluid from a container which is wet with water. Do not use DOT 5 silicone fluid. If the master cylinder is suspected of having air in its bore, it must be bled before proceeding to the brake line bleeding. 2.1. Loosen the left front brake pipe (front upper port) at the master cylinder. 2.2. Allow the brake fluid to flow from front the master cylinder port. Notice: Refer to Fastener Notice in the Preface section.
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2.3. Tighten the left front brake pipe into the master cylinder. Tighten Tighten the fastener to 32 Nm (24 lb ft). 2.4. Loosen the left front brake pipe at the master cylinder 1/4 turn. 2.5. Depress the brake pedal slowly until the fluid is seen coming from the pipe nut. 2.6. Once again, tighten the left front brake pipe into the master cylinder, while the pedal is being depressed. 2.7. Slowly release the pedal. Tighten Tighten the fastener to 32 Nm (24 lb ft). 2.8. Repeat the sequence until all the air is removed from the front (secondary) master cylinder bore. 2.9. Loosen the right front brake pipe (rear upper port) at the master cylinder. 2.10. Allow the brake fluid to flow from the rear master cylinder port. 2.11. Tighten the right front brake pipe into the master cylinder. Tighten Tighten the fastener to 32 Nm (24 lb ft). 2.12. Loosen the right front brake pipe at the master cylinder 1/4 turn. 2.13. Depress the brake pedal slowly until the fluid is seen coming from the pipe nut. 2.14. Once again, tighten the right front brake pipe into master cylinder while the pedal is being depressed. 2.15. Slowly release the pedal.
Tighten Tighten the fastener to 32 Nm (24 lb ft). 2.16. Repeat the sequence until all the air is removed from the rear (primary) master cylinder bore.
Bleed the individual calipers and wheel cylinders. Important: To assist in freeing entrapped air, tap lightly on the caliper casting with a rubber mallet. 3.1. Place a wrench over the bleeder valve. 3.2. Attach a transparent hose over the bleeder valve nipple. Submerge the other end of the hose in a transparent container of brake fluid. 3.3. Loosen the bleeder screw. 3.4. Apply the brake pedal slowly and hold. 3.5. Tighten the bleeder valve. Tighten Tighten the front brake bleeder valve to 11 Nm (8 lb ft). Tighten the rear brake bleeder valve to 7.5 Nm (66 lb in). 3.6. Release the brake pedal. 3.7. Repeat the sequence until all the air is removed from the brake pipes.
If more than one brake pipe is being bled, bleed in the following sequence: 4.1. Right rear 4.2. Left front 4.3. Left rear 4.4. Right front Check the brake pedal feel for sponginess. If the brake pedal exhibits this feel, repeat the bleeding procedure until the condition disappears. When the bleeding procedure is completed on each wheel, check the reservoir fluid level. Fill as necessary.
