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Home >> Mercedes Benz >> 1985 >> 380SL >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc & Drum >> Overhaul >> Front Disc Brake Calipers >> Cleaning & Inspection

Cleaning & Inspection

  1. Wash parts in denatured alcohol or brake fluid and air dry. Inspect caliper bore and piston for scoring, scratches or rust. Standard front brake caliper bore inside diameter is 2.36" (60 mm).
  2. Replace dust boot and piston seal when disassembling caliper. Remove small rust deposits in bore with fine emery cloth.
CAUTION: When installing new caliper, check that calipers on same axle have pistons of same diameter. Only identical calipers should be installed on front axle.


  1. Check cylinder bores of caliper for wear or damage. Small rust deposits may be removed from caliper bores with polishing cloth.
    CAUTION: DO NOT clean chrome-plated surfaces of pistons with polishing or emery cloth. Damage to surface may result. Remove deposits with soft brass wire brush or rough cleaning cloth. Replace piston, if chrome surface is damaged.
  2. Heavy rust deposits or badly scored bore will require replacement of caliper. Rust deposits in front of piston seal groove may be removed with fine emery cloth.
  3. Standard front brake caliper bore inside diameter is 2.36" (60 mm). Standard rear caliper bore I.D. (Teves) is 1.49" (38 mm) and rear caliper bore I.D. (Bendix/Girling) is 1.65" (42 mm).
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