Brake Pedal Excessive Effort
 
  
 
 
  
   
    
     |  | Brake Pedal Excessive Effort | 
   
  
  
   
   
    
    
    
    
    
   
   
    
    
     
      
      
      
      
     
     
      
       | Step | Action | Yes | No | 
      
       | DEFINITION: Brake pedal requires an increased amount of input from the driver to obtain good braking action and/or stopping distance is increased. 
 
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       | 1 
 
 | Were you sent here from the Hydraulic Brake Symptom table? 
 
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          Symptoms - Hydraulic Brakes 
 
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       | 2 
 
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            | 1. | Inspect the brake assist system for the following conditions. 
 
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            |  | • | Vacuum leaks, if equipped with vacuum power assist 
 
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            |  | • | Lack of lubrication, binding or excessively worn pushrod or pedal pivots or pivot bushings 
 
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            |  | • | Bent or damaged pedal pushrod, pedal, or pedal bracket 
 
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            |  | • | Damaged or improperly operating brake booster assembly 
 
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            | 2. | Adjust, repair or replace components as necessary. 
 
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       | 3 
 
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            | 1. | Inspect the hydraulic brake system for the following conditions. 
 
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            |  | • | Binding caliper pistons 
 
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            |  | • | Internally damaged flexible brake hoses; hindering fluid flow 
 
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            |  | • | Kinked or damaged flexible brake hoses and/or pipes 
 
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            |  | • | Internal brake fluid leaks; improperly functioning master cylinder 
 
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            |  | • | Poor brake fluid quality; low boiling point 
 
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       | 4 
 
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            | 1. | Inspect the disc brake system for the following conditions. 
 
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            |  | • | Excessively worn linings 
 
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            |  | • | Cracked, distorted or damaged linings 
 
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            |  | • | Binding, damaged or excessively worn caliper hardware and/or lining hardware 
 
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            |  | • | Lack of lubrication or excessive corrosion on metal to metal contact surfaces 
 
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            |  | • | Excessively worn or corroded rotor friction surfaces 
 
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            |  | • | Glazed rotor friction surfaces 
 
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            |  | • | Hard spots, heat checks, blueing discoloration of rotor friction surfaces 
 
 |  Did you find and correct a condition?
 
 
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          Symptoms - Hydraulic Brakes 
 
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       | 5 
 
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            | 1. | Install or connect any components that were removed or disconnected during diagnosis. 
 
 |  Is the condition still present?
 
 
 | Go to 
 
 | System OK 
 
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