Nissan Sentra manuals

Nissan Sentra Service Manual: Brake fluid

Nissan Sentra Service Manual / Brakes / Brake system / Periodic maintenance / Brake fluid

Drain and Refill

CAUTION:

DRAINING

  1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector or negative battery terminal. Refer to PG-50, "Exploded View".
  2. Connect a vinyl tube to bleeder valve.
  3. Depress brake pedal, loosen bleeder valve, and gradually remove brake fluid.

REFILLING


REFILLING

  1. Make sure no foreign material exists in the reservoir and refill with new brake fluid.

CAUTION:

Do not reuse drained brake fluid.

  1. Refill the brake system as follows:

Repeat this operation at intervals of two or three seconds until all old brake fluid is discharged. Add new brake fluid to master cylinder reservoir sub tank frequently.

CAUTION:

Do not allow master cylinder reservoir to empty as this may cause damage to master cylinder internal components.

  1. Bleed the air out of the brake hydraulic system. Refer to BR-17, "Bleeding Brake System".

Bleeding Brake System

CAUTION:

Do not spill or splash brake fluid on painted surfaces. Brake fluid may damage paint. If brake fluid is splashed on painted areas, wash it away with water immediately.

While bleeding, pay attention to master cylinder fluid level.

Before working, disconnect ABS actuator and electric unit (control unit) connectors or negative battery terminal. Refer to PG-50, "Exploded View".

  1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector or negative battery terminal. Refer to PG-50, "Exploded View".
  2. Connect a vinyl tube to rear right brake bleeder valve.
  3. Fully depress brake pedal 4 or 5 times.
  4. With brake pedal depressed, loosen bleeder valve to bleed air in brake line, and then tighten it immediately.
  5. Repeat steps 3 and 4 until all of the air is out of the brake line.
  6. Tighten the bleeder valve to the specified torque. Refer to BR-40, "BRAKE CALIPER ASSEMBLY : Exploded View" (front disc brake), BR-42, "Exploded View" (rear drum brake) BR-46, "BRAKE CALIPER ASSEMBLY : Exploded View" (rear disc brake).
  7. Repeat steps 2 through 6, with master cylinder reservoir tank filled at least halfway. Bleed the air in the following order: front right brake→ front left brake → rear right brake → rear left brake.
Brake pedal
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Front disc brake
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