Section 37 (Automatic Transmission - ALLISON - Service, Diagnosis & Troubleshooting)

• Transmission Fluid Checking Procedure
  • Cold Fluid Check
  • Hot Fluid Check
  • Fluid Inspection
• Line Pressure Check Procedure
• Obtaining Diagnostic Trouble Codes
• Clutch Test
  • Introduction
  • Clutch Test
• FastLearn Procedure
  • Overview
  • PARK Mode
  • DRIVE Mode
  • REVERSE Mode
  • Troubleshooting
• Limp Home Mode
  • Principle of Operation
  • Test Procedure
• Road Test Procedure
  • Notes
  • Electrical Function Check
  • Upshift Control and Torque Converter Clutch (TCC) Apply
  • Part Throttle Detent Downshift
  • Manual Downshifts
  • Manual 2-1 Downshift
  • Coasting Downshifts
  • Manual Range Selection
• Torque Converter Diagnosis Procedure
  • Notes
  • Torque Converter Stator
  • Poor Acceleration at Low Speed
  • Poor Acceleration at High Speed
  • Whine Noise
  • Torque Converter Clutch Shudder
  • If Shudder Occurs After The TCC Has Applied
  • Torque Converter Evaluation and Diagnosis
• Flexplate/Torque Converter Vibration Test (6.6L)
• Flexplate/Torque Converter Vibration Test (8.1L)
• Noise and Vibration Analysis
• Fluid Leak Diagnosis
  • Notes
  • Dye and Black Light Method
  • General Method
  • Powder Method
  • Find the Cause of the Leak
• Case Porosity Repair
• Automatic Transmission Oil Cooler Flushing and Flow Test
  • Notes
  • Preparation
  • Initial Flush
  • Back Flush
  • Flow Check
  • Clean-up
• Symptoms - Automatic Transmission
• Excessive Slippage and Clutch Chatter
• Fluid Leaks from Fluid Fill Tube and/or Vent
• Fluid Leaks from Transmission Input
• Fluid Leaks from Transmission Output
• Intermittent Buzzing Noise
• Low Main Line Pressure in All Ranges
• Low Main Line Pressure in specific Ranges, Normal Pressure in Other Ranges
• Low Lubrication Pressure
• Contaminated Transmission Fluid
• Excessive Flare - Engine Overspeed on Wide-Open Throttle
• High Stall Speeds (Stall in Ranges 1-6)
• Low Stall Speeds (Stall in Ranges 1-6)
• Transmission Will Not Make a Specific Shift
• Transmission Will Not Stay in Forward or Reverse
• Transmission Will Not Shift to Forward or Reverse
• Transmission Overheats
• Transmission Does Not Shift Properly
• Abnormal Activities or Responses