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Master Cylinder

REMOVAL & INSTALLATION

ff–1 and 1300G Models
  1. Separate the brake line below the master cylinder, at the three way connector.
  2. Remove the connecting tube from the master cylinder and drain the fluid from the reservoir into a suitable container.

    WARNING
    Avoid spilling brake fluid on painted surfaces.

  3. Remove the two master cylinder retaining bolts.
  4. Remove the master cylinder from the bracket.

    Fig. 1: Exploded view of the master cylinder — ff–1 and 1300G

    To install:

  5. Bench bleed the master cylinder prior to installation.
  6. Install the master cylinder and fasten the retaining bolts.
  7. Install the connecting tube.
  8. Engage the brake line below the master cylinder, at the three way connector.
  9. Refill the master cylinder with fresh brake fluid and bleed the system.
1970–80 Models (Except ff–1 and 1300G)

WARNING
Avoid spilling brake fluid on painted surfaces.

  1. Disconnect the negative (-) battery cable.
  2. Remove the brake line or lines from the master cylinder and drain the fluid into a suitable container.
  3. If equipped with a fluid level indicator, disengage the electrical harness connector from the master cylinder.
  4. On 1972–74 models and on 1975 2-door sedans, remove the nuts which connect the master cylinder to the pedal bracket.
  5. On models from 1975–80 (except 1975 2-door sedan), remove the nuts connecting the master cylinder to the power brake unit.
  6. Pull the master cylinder assembly forward and out.

    To install:

  7. Bench bleed the master cylinder prior to installation.
  8. Install the master cylinder and fasten the retaining nuts.
  9. Engage the fluid level indicator harness connector (if equipped).
  10. Engage the brake line or lines to the master cylinder.
  11. Connect the negative battery cable.
  12. Refill the master cylinder with fresh brake fluid and bleed the system.

    NOTE: Do not use the old brake fluid drained from the master cylinder to refill it after installation. Use new fluid. See Section 1 for the correct type.

1980–84 Models

CAUTION
Avoid spilling brake fluid on painted surfaces, it will lift the paint.

  1. Disconnect the negative (-) battery cable.

    Fig. 2: Use a flare nut wrench to disconnect the brake lines. Be sure to plug them to prevent the entry of dirt

    Fig. 3: Remove the master cylinder retaining fasteners

  2. Disconnect and plug the brake lines at the master cylinder.

    NOTE: It is advised to thoroughly drain the fluid from the master cylinder before performing any removal procedures.

  3. If equipped with fluid level indicator, disengage the electrical harness connector from the master cylinder.
  4. Remove the master cylinder-to-power booster nuts and the master cylinder from the vehicle.

    Fig. 4: When removing the master cylinder from the vehicle be, careful not to spill any brake fluid

    To install:

  5. Bench bleed the master cylinder prior to installation.
  6. Install the master cylinder on the power booster and tighten the nuts to 7–13 ft. lbs. (10–18 Nm).
  7. Connect the fluid level indicator.
  8. Connect the brake lines and tighten the flare nut to 9–13 ft. lbs. (13–18 Nm).
  9. Connect the negative battery cable.
  10. Refill the master cylinder with fresh brake fluid and bleed the system.
  11. Bleed the brake system as required.

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