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How to Rebuild & Modify GM Turbo 400 Transmissions
Respected automotive technical author Cliff Ruggles takes readers through the complex rebuild procedure of GMs most popular rear-wheel drive automatic transmission in this great new book. Enthusiasts have embraced the reliable GM Turbo Hydra-Matic 400 three-speed automatics for years, and the popularity of these transmissions is not slowing down. With his proven style, Ruggles walks through the step-by-step rebuild and performance upgrade procedures in a series of full-color photos for each of these models. Time saving tips are part of every buildup.
This is a welcome addition to your automotive library. Amateurs and professionals alike will appreciate the advice and guidance offered on every page. Even if you end up deciding to have a professional take care of your transmission repair and performance needs, this information is crucial to understanding how the power gets from the engine to the road.
Preface
What is a Workbench® Book?
Chapter 1: Tools and Equipment
Safety Equipment
Sockets and Wrenches
Snap Ring Pliers
Screwdrivers
Measuring Devices
Spring Compressors
Case Holding Fixtures
Work Surface
Pans for Small Parts
Cleaning Cases
Bushing Removers and Installers
Heli-Coils and Bolt Extractors
Air Tools
Punches, Chisels and Files
Lip Seal Installation Tools
Friction Alignment Tool
Oil Pump Band
Alignment Studs
Slide Hammer
Special Tools
Chapter 2: Transmission Fundamentals
Torque Converters
Transmission Oil Pump
Clutch Packs
Bands and Servos
Accumulators
Planetary Gears
Sprags and Roller Clutches
Valve Body
Chapter 3: Transmission Removal
Chapter 4: TH400 Disassembly
Remove External Components
Remove Valve Body and Governor Filter
Remove Downshift Solenoid and Separator Plate
Remove Front Band and Low Band Apply Servos
Remove Oil Pump, Manual Shaft and Speedometer Gear Housing
Remove Forward Drum Clutch, Direct Drum and Band
Remove Clutch Pack, Output Shaft and Low Band
Final Disassembly
Chapter 5: TH400 Assembly
Install New Case Bushing, Solenoid Connector and Parking Pawl
Disassemble Output Shaft and Lower Planetary Assembly
Reinstall Planetary Assembly
Install Low Band and Output Assembly
Rebuild Center Support
Reinstall Center Support
Rebuild and Install Clutch Pack and Intermediate Band
Rebuild Direct Clutch Pack and Install Direct Drum
Rebuild Forward Drum
Rebuild and Install Oil Pump Assembly
Check Clutch Packs and Install Accumulator Piston
Install Filter and Valve Body
Install Exterior Components
Chapter 6: TH400 Transbrake
Installation Procedure
Chapter 7: Transmission Installation
Troubleshooting Guide
Source Guide
Respected automotive technical author Cliff Ruggles takes readers through the complex rebuild procedure of GMs most popular rear-wheel drive automatic transmission in this great new book. Enthusiasts have embraced the reliable GM Turbo Hydra-Matic 400 three-speed automatics for years, and the popularity of these transmissions is not slowing down. With his proven style, Ruggles walks through the step-by-step rebuild and performance upgrade procedures in a series of full-color photos for each of these models. Time saving tips are part of every buildup.
This is a welcome addition to your automotive library. Amateurs and professionals alike will appreciate the advice and guidance offered on every page. Even if you end up deciding to have a professional take care of your transmission repair and performance needs, this information is crucial to understanding how the power gets from the engine to the road.
Preface
What is a Workbench® Book?
Chapter 1: Tools and Equipment
Safety Equipment
Sockets and Wrenches
Snap Ring Pliers
Screwdrivers
Measuring Devices
Spring Compressors
Case Holding Fixtures
Work Surface
Pans for Small Parts
Cleaning Cases
Bushing Removers and Installers
Heli-Coils and Bolt Extractors
Air Tools
Punches, Chisels and Files
Lip Seal Installation Tools
Friction Alignment Tool
Oil Pump Band
Alignment Studs
Slide Hammer
Special Tools
Chapter 2: Transmission Fundamentals
Torque Converters
Transmission Oil Pump
Clutch Packs
Bands and Servos
Accumulators
Planetary Gears
Sprags and Roller Clutches
Valve Body
Chapter 3: Transmission Removal
Chapter 4: TH400 Disassembly
Remove External Components
Remove Valve Body and Governor Filter
Remove Downshift Solenoid and Separator Plate
Remove Front Band and Low Band Apply Servos
Remove Oil Pump, Manual Shaft and Speedometer Gear Housing
Remove Forward Drum Clutch, Direct Drum and Band
Remove Clutch Pack, Output Shaft and Low Band
Final Disassembly
Chapter 5: TH400 Assembly
Install New Case Bushing, Solenoid Connector and Parking Pawl
Disassemble Output Shaft and Lower Planetary Assembly
Reinstall Planetary Assembly
Install Low Band and Output Assembly
Rebuild Center Support
Reinstall Center Support
Rebuild and Install Clutch Pack and Intermediate Band
Rebuild Direct Clutch Pack and Install Direct Drum
Rebuild Forward Drum
Rebuild and Install Oil Pump Assembly
Check Clutch Packs and Install Accumulator Piston
Install Filter and Valve Body
Install Exterior Components
Chapter 6: TH400 Transbrake
Installation Procedure
Chapter 7: Transmission Installation
Troubleshooting Guide
Source Guide
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