Nissan 200SX S13 silhouetteS13

REAR DISC BRAKE (AD9) — Caliper — Inspection

BR-25prose procedure

Inspection

INSPECTION OF BRAKE DRAG FORCE

AD9 brake drag force inspection

  1. 1
    Swing cylinder body upward.
  2. 2
    Make sure that wheel bearing is adjusted properly. Refer to section RA.
  3. 3
    Measure rotating force (F₁).
    Spring scale being pulled tangentially on the rear-rotor edge with caliper swung up to measure rotating force F₁.
    SBR227A
  4. 4
    Install caliper with pads to original position.
  5. 5
    Depress brake pedal for 5 seconds.
  6. 6
    Release brake pedal, rotate disc rotor 10 revolutions.
  7. 7
    Measure rotating force (F₂).
    Spring scale being pulled tangentially on the rear-rotor edge with caliper installed, pads in place after pump-and-rotate sequence to measure F₂.
    SBR018A
  8. 8
    Calculate brake drag force by subtracting F₁ from F₂. If it is not within specification, check pins and pin boots in caliper.
Maximum brake drag force (F₂ - F₁)AD9 rear-caliper on-vehicle inspection.
103.0N (10.5 kg, 23.2 lb)

DISC PAD

Check disc pad for wear or damage.
Pad wear limit (A)AD9 rear-caliper pad — replace below this value.
2.0mm (0.079 in)

CYLINDER BODY

Check inside surface of cylinder body for score, rust, wear, damage or presence of foreign materials. If any of the above conditions are observed, replace cylinder body.
Minor damage from rust of foreign materials may be eliminated by polishing surface with a fine emery paper. Replace cylinder body if necessary.

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