Nissan Micra Brake Bleeding Diagram & Torque Specs - Hydraulic System BR-2
Brake hydraulic system schematic for bleeding, showing master cylinder, booster, valve and routing of primary and secondary brake lines.
This is page BR-2 of a factory service manual brake section titled "Bleeding Hydraulic System." The top of the page contains a schematic layout diagram of the vehicle's hydraulic brake system, identifying the front brake (Model CL16), rear brake (Model LT18B), master cylinder, brake booster, DP valve, brake tubes, brake hoses, flare nuts, and air bleeders. Torque specifications are provided in N·m (kg-m, ft-lb): flare nuts 15-18 N·m (1.5-1.8 kg-m, 11-13 ft-lb), air bleeders 7-9 N·m (0.7-0.9 kg-m, 5.1-6.5 ft-lb), and DP valve to body 4-5 N·m (0.4-0.5 kg-m, 2.9-3.6 ft-lb). A legend distinguishes the primary and secondary hydraulic lines. A warning instructs cleaning pad and shoe dust with a dust collector after cleaning with a waste cloth. The Precaution section lists five points: use DOT 3 brake fluid, monitor master cylinder fluid level during bleeding, do not reuse drained fluid, avoid splashing fluid on paint, and use special tool GG94310000 (a flare nut wrench, illustrated) when removing/installing brake tubes. Figure references SBR810 and SBR500 appear on the page.
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Frequently asked questions
- What brake fluid is recommended for the hydraulic system?
- The document states the recommended fluid is brake fluid "DOT 3".
- What is the torque spec for the brake line flare nuts?
- Flare nuts are torqued to 15-18 N·m (1.5-1.8 kg-m, 11-13 ft-lb).
- What is the torque for the air bleeder screws?
- Air bleeders (front and rear) are torqued to 7-9 N·m (0.7-0.9 kg-m, 5.1-6.5 ft-lb).
- What tool is used when removing and installing brake tubes?
- The document specifies special tool GG94310000, a flare nut wrench shown in the illustration.
- Which brake models are shown in the diagram?
- Front brake is Model CL16 and rear brake is Model LT18B.
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