Table of Contents 553 Brake Systems Section 4 Topics ................................................................................. 39 Drum Brakes ....................................................................................... 40 Wheel Cylinder ................................................................................... 41 Brake Shoes and Linings .................................................................... 42 Brake Drum ........................................................................................ 43 Leading/Trailing ..................................................................................
44 Dual-Servo .......................................................................................... 45 Dual Mode .......................................................................................... 46 Self Adjusting Brake Shoes ................................................................ 47 Drum Brake Lubrication ...................................................................... 48 Drum Brake Inspection ....................................................................... 49 Brake Shoe Adjustment ...................................................................... 50 Brake Adjustment Caliper ...................................................................
51 Section 5: Parking Brake Section 4: Drum Brakes Section 5 Topics ................................................................................. 53 Parking Brake ..................................................................................... 54 Linkage Components .......................................................................... 55 Drum Parking Brake Components ....................................................... 56 Leading/Trailing Parking Brake Adjustment ....................................... 57 Exclusive Type Disc Parking Brake .....................................................
58 Caliper Assembly Disc Parking Brake ................................................ 59 Caliper Assembly Parking Brake Automatic Adjustment .................... 60 Resetting the Caliper Assembly Disc Parking Brake Piston ............... 61 Section 6: Brake Diagnosis Section 6 Topics ................................................................................. 63 The 6-Step Diagnostic Process .......................................................... 64 Verify the Concern .............................................................................. 65 Preliminary Inspection ........................................................................
65 Identify All Symptoms ......................................................................... 66 Pedal Feel Symptoms ........................................................................ 67 Brake Pedal Position .......................................................................... 68 Pedal Height ....................................................................................... 68 Free-Play ............................................................................................ 68 Reserve Distance ...............................................................................
68 Stop Light Switch ................................................................................ 68 Brake Pedal Reserve Adjustment ....................................................... 69 Stop Light Switch Adjustment ............................................................. 70 Brake Pull Symptoms ......................................................................... 71 Noise Symptoms ................................................................................ 72 Vibration Symptoms ........................................................................... 73 Find the Cause ...................................................................................
74 Repair and Confirm ............................................................................ 75 ii Technical Training