Toyota Celica 1986-1993 Repair Guide

Bleeding the Brake System

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On vehicles equipped with an Anti-lock Brake System (ABS), please refer to the appropriate procedure in this section.


WARNING
If any maintenance or repairs were performed on the brake system, or if air is suspected in the system, the system must be bled. If the master cylinder has been overhauled or if the fluid reservoir was run dry, start the bleeding procedure with the master cylinder. Otherwise (and after bleeding the master cylinder), start with the wheel cylinder which is farthest from the master cylinder (longest hydraulic line). Brake fluid will remove the paint from any surface that it comes in contact with. If brake fluid spills on a painted surface, wash it off immediately.

MASTER CYLINDER BLEEDING



  1. Check the fluid level in the master cylinder reservoir and add fluid as required to bring to the proper level.
  2.  
  3. Remove the two brake tubes from the master cylinder.
  4.  
  5. Have an assistant depress the brake pedal and hold it in the down position.
  6.  
  7. While the pedal is depressed, block off the outlet plug with your finger, then release the brake pedal.
  8.  
  9. Repeat the procedure three or four times.
  10.  
  11. Reconnect the lines, then bleed the brake system, if needed.
  12.  



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Fig. Fig. 1 Bleeding brake master cylinderCelica



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Fig. Fig. 2 Bleeding brake lineCelica

SYSTEM BLEEDING




WARNING
Start the brake system bleeding procedure on the wheel cylinder that is the furthest away from the master cylinder. To bleed the brakes you will need a supply of brake fluid, a long piece of clear vinyl tubing and a small container that is half full of brake fluid. Do not reuse any of the brake fluid that ends up in the jar.

  1. Clean all the dirt and grease from the wheel cylinder or caliper bleeder plug and remove the protective cap. Connect one end of a clear vinyl tube to the fitting.
  2.  
  3. Insert the other end of the tube into a jar which is half filled with brake fluid.
  4.  
  5. Have an assistant slowly depress the brake pedal while you slightly open the bleeder plug. Fluid should run out of the tube. When the pedal is at its full range of travel, close the bleeder plug.
  6.  
  7. Have your assistant slowly pump the brake pedal. Repeat Step 3 until there are no more air bubbles in the fluid.
  8.  
  9. Repeat Steps 1 to 4 for each wheel cylinder or caliper. Add fresh brake fluid to the master cylinder reservoir every few pumps, so that it does not completely drain during bleeding.
  10.  

 
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