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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 169 (Brake System) >> Periodic Maintenance >> Brake Fluid >> Bleeding Brake System

Bleeding Brake System

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • If the brake fluid contacts the brake caliper assembly and disc rotor, quickly wipe it off.
  • Do not spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it off immediately and wash with water if it gets on a painted surface.
  • Do not operate the brake pedal with the reservoir cap removed. Failure to do this may cause a discharge of brake fluid from the reservoir cap opening.
  • Do not operate the brake pedal excessively during the work procedure.
  • Monitor the brake fluid level in the reservoir tank while performing the air bleeding.
  • Check that there is no foreign material in the reservoir tank.
  • Do not reuse drained brake fluid.
  • Do not allow oils other than brake fluid to enter the reservoir tank.
NOTE: When the ignition switch is ON, the brake warning lamp may turn ON even when the parking brake pedal is released with the brake fluid within the specified level. This indicates the decrease in accumulator fluid pressure.
  1. Turn the ignition switch OFF and fill the reservoir tank to MAX line with brake fluid.
  2. Turn the ignition switch ON.
    NOTE: The motor is activated and automatically stops.
  3. Turn the ignition switch OFF.
  4. Depress the brake pedal 20 times or more.
    NOTE: The pressure loss in the accumulator results in a large brake pedal stroke. In addition to this, the brake pedal depression becomes lighter in initial stage.
  5. Repeat steps 2 to 4 for 5 times.
  6. Turn the ignition switch ON to check that the time between motor activation and automatic stop is less than 18 seconds. If the time is 18 seconds or more, repeat from Step 2 to 4 for 5 times.
  7. With the ignition switch ON, connect vinyl tubes to the front and rear bleeder valves.
  8. Depress the brake pedal. Loosen the front bleeder valve to bleed air in brake line, then tighten front bleeder valve. Refer to Exploded View .
  9. Repeat steps 1 to 9 until all of the air is out of the front brake line.
  10. Release the brake pedal.
  11. Depress and hold the brake pedal. Loosen rear bleeder valve to discharge 100 cc (3.4 US fl oz, 3.5 lmp fl oz), bleed air in brake line, and then tighten rear bleeder valve. Refer to Exploded View .
  12. Repeat until air is out of brake lines.
  13. Bleed the air in the following order: front (RH), front (LH), rear (RH), rear (LH).
  1. Turn the ignition switch OFF.
  2. Depress the brake pedal 20 times or more.
    NOTE: The pressure loss in the accumulator results in a large brake pedal stroke. In addition to this, the brake pedal depression becomes lighter in initial stage.
  3. Adjust brake fluid level to the reservoir tank MAX line.
    CAUTION: Do not adjust with the ignition switch ON.
    • XD Models
      GNSDB117955Courtesy of NISSAN NORTH AMERICA, INC.
    • Non-XD Models
      GNSALFIA0766Z-766Courtesy of NISSAN NORTH AMERICA, INC.
  4. Turn the ignition switch ON.
  5. Check that the reservoir tank brake fluid level is within 6 - 14 mm (0.24 - 0.55 in) lower than the MAX line center.
    NOTE: Since brake fluid is in the accumulator in pressurized condition, the reservoir tank brake fluid level should be lower than the MAX line.
    • XD Models
      GNSDB117955Courtesy of NISSAN NORTH AMERICA, INC.
    • Non-XD Models
      GNSALFIA0766Z-766Courtesy of NISSAN NORTH AMERICA, INC.
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