Suspension: Technical Service Bulletins

• Customer Interest
  • Brakes - Vehicle Pulls Left/Right on Braking
    • Overview
    • Service Procedure
      • Road Test - Concern Verification
      • Road Test - Diagnostic
      • Diagnostic Procedure 1
      • Diagnostic Procedure 2
  • Steering/Suspension - Stiff, Wandering
  • Suspension - Rear Of Vehicle Too High/Low When Towing
  • Front Leaf Spring - Squeaking Noise
  • Suspension - Vehicle Leans/Sags To One Side
  • 4X4 System - Front Hubs Won't Lock/Disengage
  • Stability Bar - Front Bracket May Break Off
    • Overview
    • All 4X4 Vehicles Built Prior to 3/21/1999
    • All 4X4 Vehicles Built After to 3/21/1999
    • F-450/F-550 4X2 Vehicles Built Prior to 3/21/1999
    • F-450/F-550 4X2 Vehicles Built After 3/21/1999
• By Symptom
  • Abnormal wear/deterioration
    • Stability Bar - Front Bracket May Break Off
      • Overview
      • All 4X4 Vehicles Built Prior to 3/21/1999
      • All 4X4 Vehicles Built After to 3/21/1999
      • F-450/F-550 4X2 Vehicles Built Prior to 3/21/1999
      • F-450/F-550 4X2 Vehicles Built After 3/21/1999
  • Customer Interest
    • Brakes - Vehicle Pulls Left/Right on Braking
      • Overview
      • Service Procedure
        • Road Test - Concern Verification
        • Road Test - Diagnostic
        • Diagnostic Procedure 1
        • Diagnostic Procedure 2
    • Steering/Suspension - Stiff, Wandering
    • Suspension - Rear Of Vehicle Too High/Low When Towing
    • Front Leaf Spring - Squeaking Noise
    • Suspension - Vehicle Leans/Sags To One Side
    • 4X4 System - Front Hubs Won't Lock/Disengage
    • Stability Bar - Front Bracket May Break Off
      • Overview
      • All 4X4 Vehicles Built Prior to 3/21/1999
      • All 4X4 Vehicles Built After to 3/21/1999
      • F-450/F-550 4X2 Vehicles Built Prior to 3/21/1999
      • F-450/F-550 4X2 Vehicles Built After 3/21/1999
  • Difficult steering
    • Steering/Suspension - Stiff, Wandering
  • Erratic Operation
    • 4X4 System - Front Hubs Won't Lock/Disengage
  • Incorrect height
    • Suspension - Rear Of Vehicle Too High/Low When Towing
    • Suspension - Vehicle Leans/Sags To One Side
  • Inoperative
    • 4X4 System - Front Hubs Won't Lock/Disengage
  • Noise
    • Front Leaf Spring - Squeaking Noise
    • Drivetrain - Hub/Bearing Rocking End-Play Measurement
  • Pull, grab
    • Brakes - Vehicle Pulls Left/Right on Braking
      • Overview
      • Service Procedure
        • Road Test - Concern Verification
        • Road Test - Diagnostic
        • Diagnostic Procedure 1
        • Diagnostic Procedure 2
  • Vibration
    • Drivetrain - Hub/Bearing Rocking End-Play Measurement
• All Technical Service Bulletins
  • Suspension - Rear Of Vehicle Too High/Low
  • Brakes - Vehicle Pulls Left/Right on Braking
    • Overview
    • Service Procedure
      • Road Test - Concern Verification
      • Road Test - Diagnostic
      • Diagnostic Procedure 1
      • Diagnostic Procedure 2
  • Steering/Suspension - Stiff, Wandering
  • Suspension - Rear Of Vehicle Too High/Low When Towing
  • Front Leaf Spring - Squeaking Noise
  • Suspension - Vehicle Leans/Sags To One Side
  • Brakes - New Design Front Rotor and Hub Service Tip
  • Drivetrain - Front Locking Hub Service Tips
  • Drivetrain - Hub/Bearing Rocking End-Play Measurement
  • 4X4 System - Front Hubs Won't Lock/Disengage
  • Stability Bar - Front Bracket May Break Off
    • Overview
    • All 4X4 Vehicles Built Prior to 3/21/1999
    • All 4X4 Vehicles Built After to 3/21/1999
    • F-450/F-550 4X2 Vehicles Built Prior to 3/21/1999
    • F-450/F-550 4X2 Vehicles Built After 3/21/1999
  • Comprehensive Noise/Vibration/Harshness Procedure
    • Overview
    • Description and Operation
      • Noise, Vibration and Harshness (NVH)
      • Acceptable Noise, Vibration and Harshness
      • Diagnostic Theory
      • Diagnostic Process
      • Glossary of Terms
      • Tools and Techniques
    • Diagnosis and Testing
      • Overview
      • Diagnostic Process
      • 1. Customer Interview
      • 2. Pre-Drive Check
      • 3. Preparing For the Road Test
      • 4. Verify the Customer Concern
      • 5. Road Test
      • 6. Check OASIS/TSBs/Repair History
      • 7. Diagnostic Procedure
      • NVH Condition and Symptom Categories
        • Operating Condition - Vehicle Is Not Moving
        • Operating Condition - Vehicle Is Moving
      • Symptom Charts
        • Air Leak and Wind Noise
        • Brake Noise/Vibration
        • Driveline Noise/Vibration
        • Engine Noise/Vibration
        • Idle Noise/Vibration
        • Squeak and Rattle
        • Steering Noise/Vibration
        • Suspension Noise/Vibration
        • Tire Noise/Vibration
        • Transmission (Manual) & Transfer Case Noise/Vibration
        • Transmission (Automatic) Noise/Vibration
      • Pinpoint Tests
        • Overview
        • Pinpoint Test A: Brake Vibration/Shudder Diagnosis
        • Pinpoint Test B: Engine Ticking Noise Diagnosis
        • Pinpoint Test C:Front ENG. ACC. Drive (Fead) Bearing Hoot Diag.
        • Pinpoint Test D: Power Steering Moan Diagnosis
        • Pinpoint Test E: Engine Driven Cooling Fan Moan Diagnosis
        • Pinpoint Test F: Drumming Noise Diagnosis
        • Pinpoint Test G: Engine Ticking, Knock/Continuous Rattle Diag.
        • Pinpoint Test H: Front Suspension Noise Diagnosis
        • Pinpoint Test I: Rear Suspension Noise Diagnosis
        • Pinpoint Test J: Wheel and Tire Diagnosis
        • Pinpoint Test K: High Speed Shake or Shimmy Diagnosis
        • Pinpoint Test L: Clutch Vibration
        • Pinpoint Test M: Transfer Case Vibration
      • Component Tests
        • Idle Speed Air Control Valve (ISACV)
        • Steering Gear Grunt/Shudder Test
        • Checking Tooth Contact Pattern/Condition of Ring & Pinion
      • Tire Wear Patterns & Frequency Calculations
        • Overview
        • Tire Wear Chart
        • Tire Speed and Frequency Chart
    • General Procedures
      • Powertrain/Drivetrain Mount Neutralizing
      • Exhaust System Neutralizing
      • Wheel Bearing Check