Vibration - Drivetrain

• Description & Operation
  • Notes
  • Axle Shafts
    • 4-Wheel Drive/All Wheel Drive
    • Front Wheel Drive
    • Rear Wheel Drive With Independent Rear Suspension
  • Front Differential Assembly
    • Selectable Four Wheel Drive (S4WD) Front Differential Assembly
    • Full-Time Four Wheel Drive (F4WD) Front Differential Assembly
  • Driveshaft
    • Notes
    • Front Driveshaft Description
    • One Piece Driveshaft Description
    • Two Piece Driveshaft Description
    • Driveshaft Phasing Description
    • Universal Joint Description
    • Center Bearing Description
  • Rear Differential Assembly
    • Standard Differential
    • Locking Differential
    • Limited Slip Differential
  • Vibration Theory & Terminology
    • Vibration Theory
    • Basic Vibration Terminology
    • Cycle
    • Frequency
    • Amplitude
    • Free Vibration
    • Forced Vibration
    • Centrifugal Force Due To An Imbalance
    • Natural Or Resonant Frequency
    • Resonance
    • Damping
    • Beating (Phasing)
    • Order
  • Electronic Vibration Analyzer (EVA)
    • Notes
    • EVA Vibration Sensor
    • EVA Vibration Sensor Placement
    • EVA Vibration Sensor-To-Component Attachment
    • EVA Software Cartridge
    • EVA Smart Strobe Function
    • EVA Strobe Balancing Function
    • Averaging/Non-Averaging Modes
    • EVA Display
  • Vibrate Software
    • Description & Operation
  • Reed Tachometer
    • Description
• Diagnostic Starting Point
  • Vibration Diagnosis & Correction
    • Notes
    • Vibration Diagnostic Process
    • Preliminary Visual/Physical Inspection
    • Diagnostic Aids
  • Component Rotational Speed Calculation
    • Notes
    • Tire & Wheel Rotational Speed Calculation
    • Driveline Rotational Speed Calculation
    • Component Rotational Speed Worksheet
  • Axle Shafts
  • Front Differential Assembly
  • Driveshaft
  • Rear Differential Assembly (Standard)
  • Rear Differential Assembly (Locking/Limited Slip)
• Symptoms
  • Axle Shafts
    • Notes
    • Classifying The Symptom
    • Visual/Physical Inspection
    • Symptom List
  • Front Differential Assembly
    • Notes
    • Noise Diagnosis
    • Classifying The Symptom
    • Visual/Physical Inspection
    • Symptoms List
  • Driveshaft
    • Notes
    • Classifying The Symptom
    • Visual/Physical Inspection
    • Intermittent
    • Symptom List
  • Rear Differential Assembly (Standard)
    • Strategy Based Diagnostics
    • Visual/Physical Inspection
    • Intermittents
    • Symptom List
  • Rear Differential Assembly (Locking/Limited Slip)
    • Notes
    • Visual/Physical Inspection
    • Symptom List
• Vibration Diagnostic Aids
  • Notes
  • Vibration Intermittent Or Not Duplicated
    • Notes
    • Specific Conditions Can Affect the Condition
    • Temperature, Ground-Out, Accessory Load
    • Vehicle Payload
    • Roadway Selection
  • Vibration Duplicated, Component Not Identified
    • Notes
    • Aftermarket Add-On Accessories
  • Vibration Duplicated, Difficult To Isolate/Balance Component
    • Notes
    • Driveline Torque-Load Conditions
    • Difficult To System Balance The Driveline
  • Vibration Duplicated, Appears To Be Potential Operating Characteristic
    • Notes
    • Check Service Bulletins
• Vibration Analysis - Road Testing
• Trouble Shooting
  • Click Noise In Turns
  • Clunk When Accelerating From Coast
  • Clunk Noise When Accelerating During Turns
  • Front Differential Assembly Noises
    • Gear Noise
    • Bearing Noise
    • Front Wheel Bearing Noise
    • Knock At Low Speeds
    • Backlash Clunk
  • Rear Differential Assembly Noises
    • Gear Noise
    • Bearing Noise
    • Rear Wheel Bearing Noise
    • Knock At Low Speeds
    • Backlash Clunk
  • Noisy In Drive
    • Excessive Pinion To Ring Gear Backlash
    • Worn Pinion & Ring Gear
    • Worn Pinion Bearings
    • Loose Pinion Bearings
    • Excessive Pinion End Play
    • Worn Differential Bearings
    • Loose Differential Bearings
    • Excessive Ring Gear Runout
    • Low Oil Level
    • Wrong Or Poor Grade Oil
  • Noisy When Coasting
    • Notes
    • Worn Pinion & Ring Gear
    • Pinion & Ring Gear Too Tight
  • Intermittent Noise
    • Warped Ring Gear
    • Loose Differential Case Assembly
  • Constant Noise
    • Flat Spot On The Pinion Or The Ring Gear Teeth
    • Flat Spot On The Pinion Bearing
    • Worn Pinion Splines
  • Noisy On Turns
    • Worn Differential Side Gears & Pinions
    • Worn Differential Spider
    • Worn Axle Shaft Splines
  • Front Differential Assembly Lubricant Leak Diagnosis
    • Notes
    • Determining The Cause
  • Rear Differential Assembly Lubricant Leak Diagnosis
    • Notes
    • Determining The Cause
  • Locking Differential Diagnosis
  • Limited Slip Differential Diagnosis
  • Leak At Front Slip Yoke
    • Notes
    • The Slip Yoke Barrel Is Burred, Nicked, Corroded, Or Worn
    • There Is A Faulty Transmission Or Transfer Case Output Shaft Oil Seal
  • Universal Joint Noise
    • One Or More Universal Joints Are Worn, Damaged Or Have Lost Lubrication
    • The "U" Joint Hardware Has Become Loose
  • Ping, Snap, Or Click Noise
    • Notes
    • The Fixed Yoke Or The Pinion Yoke Is Loose
    • One Or More Of The Universal Joints Are Worn Or Damaged
  • Knock Or Clunk Noise
    • Notes
    • One Or More Of The Universal Joints Are Worn Or Damaged
    • The Side Gear Hub Counterbore In The Differential Is Worn Oversize
  • Scraping Noise
  • Squeak Noise
    • Notes
    • One Or More Of The Universal Joints Have Lost Lubricant
    • A Broken Or Missing Snap Ring On The Rear Bearing Housing Assembly (Manual Transmission Only)
  • Shudder On Acceleration At Low Speed
  • Whirring Or Squealing Noise
  • Moaning Noise
  • Rattle Noise
  • Locking Rear Axle Does Not Lock
    • Little Or No Preload On The Latching Bracket
    • Flyweights In The Governor Assembly Are Stuck Closed
    • Drive Teeth On The Governor Or Cam Gear Assembly Are Broken
    • Broken Clutch Plates
  • Locking Rear Axle Locks In Turns
    • Governor Assembly Is Tight In Case
    • Broken Or Weak Governor Flyweight Spring
    • Flyweight In Governor Assembly Is Stuck Open
    • Cam Plate Or Governor Drive Teeth Are Broken
  • Limited Slip Differential Chatters In Turns
    • Lubricant Is Contaminated
    • Clutch Plates Are Deteriorated
  • Locking Rear Drive Axle Chatters In Turns
    • Lubricant Is Contaminated
    • Clutch Plates Are Deteriorated
  • Noise In Addition To Normal Clutch Engagement
    • Notes
    • Clutch Plates Are Broken
    • Thrust Block Is Broken
    • Case Is Damaged
    • Differential Gears Are Broken