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BRAKE SYSTEM Article Text 1983 BMW 320i For Electronics & Computers El Camino Real Santa Clara CA 95051 Copyright ' 1997 Mitchell International Saturday, December 05, 1998 12:26PM ARTICLE BEGINNING 1983 Brakes BMW 318i, 320i, 528e, 533i, 633CSi, 733i DESCRIPTION Brake system is hydraulically-operated, using a tandem master cylinder and power brake unit. All models, except 318i and 320i, are equipped with 4 piston ATE front and rear disc calipers. The 318i and 320i models are equipped with rear drum brakes and Girling front disc brake calipers. Disc pad wear indicators are mounted on the instrument panel to indicate need for pad replacement. An optional brake pressure regulator may be installed to reduce fluid pressure to rear brakes. Parking brake is cable-actuated on drum brake of 318i and 320i models, and consists of internally-mounted parking brake shoes on all rear disc brake systems. ADJUSTMENT BRAKE PEDAL HEIGHT 1) Brake pedal height (measured from firewall to pedal pad center) should be 9.4-9.8" (239-249 mm) on 318i and 320i; 9.1-9.5" (230-241 mm) on 528e, 533i and 633CSi; and 9.9-10.2" (251-260 mm) on 733i. 2) To adjust pedal height, loosen stop light switch lock nut, and position stop light switch out of way. Loosen brake operating rod lock nut, and turn operating rod until correct pedal height is obtained. Tighten lock nut. Reposition and adjust stop light switch. Tighten stop light switch lock nut. STOP LIGHT SWITCH Stop light switch is of brake pedal arm. To adjust Turn adjusting nut so contact extended length of plunger is PARKING BRAKE located under instrument panel in front stop light switch, loosen lock nut. plunger just touches pedal arm and .20-.24" (5-6 mm). Tighten lock nut. NOTE: Before adjusting parking brake (except 320i), pull parking brake lever until resistance is felt; then 1 additional notch. With parking brake lever engaged as described, drive vehicle a maximum of 1/4 mile. 318i 1) Lift out front clamp. Pull off rubber cap. Disconnect BRAKE SYSTEM Article Text (p. 2) 1983 BMW 320i For Electronics & Computers El Camino Real Santa Clara CA 95051 Copyright ' 1997 Mitchell International Saturday, December 05, 1998 12:26PM rear clamp. Unscrew adjusting bolts. Operate brake pedal several times. Basic clearance is automatically adjusted. Listen for clicking noise on rear wheels. 2) Pull up parking brake lever by 5 teeth. Adjust adjusting nuts enough so that rear wheels can just be turned evenly. Release lever. Check that wheels can be turned easily and that indicator light goes out with ignition switch on. Adjust switch, if necessary. 320i 1) Raise and support rear of vehicle. Fully release parking brake. Tighten brake shoes until wheel is locked. Back off adjusters about 1/8 turn or until wheel can just barely turn. 2) Working inside passenger compartment, tighten nuts on lever until parking brake holds vehicle securely before 6th ratchet stop is reached. 528e, 533i, 633CSi, 733i 1) Raise and support vehicle. Rem