Nissan Sentra/Pulsar/NX 1982-1996 Repair Guide

System Bleeding

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See Figure 1



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Fig. Fig. 1: Connect a hose and clear bottle filled with brake fluid to the bleeder screw as shown

System bleeding is required whenever air in the hydraulic fluid causes a spongy feeling pedal and sluggish response. This is almost always the case after some part of the hydraulic system has been repaired or replaced. Use DOT 3 brake fluid in all systems.

  1. On vehicles equipped with anti-lock brake (ABS) systems, turn the ignition switch to the OFF position and disconnect the negative battery cable. All other steps apply to both ABS and conventional brake systems.
  2.  
  3. Fill the master cylinder reservoir with DOT 3 brake fluid.
  4.  
  5. On 1982-93 vehicles, the bleeding sequence is as follows:

    Left rear
     
    Right front
     
    Right rear
     
    Left front
     

  6.  
  7. On 1994-96 vehicles, the bleeding sequence is as follows:

    Right rear
     
    Left front
     
    Left rear
     
    Right front
     

  8.  

  1. Starting with the first point in the bleeding sequence, connect a clear hose over the bleeder screw. Submerge the other end of the hole in clean brake fluid in a clear glass container. Make sure the clear hose in below the brake fluid level.
  2.  
  3. Open the bleeder valve, while a helper slowly pumps the brake pedal. Pump the pedal several times (in long strokes) until fluid free of bubbles is discharged.
  4.  
  5. On the last pumping stroke, hold the pedal down and tighten the bleeder screw. Check the fluid level periodically during the bleeding operation.
  6.  
  7. Repeat this procedure for the remainder of the system, following the proper sequence.
  8.  


WARNING
Do not allow the reservoir to run dry during the bleeding procedure. To prevent damage to the master cylinder, it is best not to exceed 2 / 3 pedal travel.

  1. Check that the brake pedal is now firm with the engine not running. If not, repeat the bleeding operation.
  2.  

 
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