TH400 Rebuild Series - Teardown (Disassembly)

Learn how to disassemble the GM TH400 automatic transmission. Get a bird's eye view on the basic Turbo 400 teardown techniques, along with some helpful disassembly tips and tricks. Equally important, also learn what NOT to touch during disassembly.

See what it takes to remove all of the TH400 sub-assemblies from the transmission case:
1). Pump.
2). Input Drum (Forward Clutch).
3). Direct Drum (Direct Clutch).
4). Intermediate Clutch.
5). Planetary gear set.
6). Intermediate Band & Low-Reverse Band.
7). Valve-body, governor, and modulator.


Help This Channel Grow:
Coming Soon!


*****TH400 Build Series*******
TH400 Teardown: You're currently watching it.
TH400 Inspection:    • TH400 Rebuild Series - Inspection (A ...  
TH400 Building Clutch Drums:    • TH400 Build Series - Building Clutch ...  
TH400 Building Clutch Drums (Continued):    • TH400 Build Series - Building Clutch ...  
TH400 Bushings:    • TH400 Build Series - Bushing Replacement  
TH400 Prepping Case for Assembly:    • TH400 Build Series - Prepping Case fo...  
TH400 Planetary Gear Set - Assembly & Installation:    • TH400 Build Series - Planetary Gear S...  
TH400 Intermediate Clutch, Band, Direct & Forward Drums:    • TH400 Build Series - Installing Inter...  
TH400 Pump + Front End-Play:    • TH400 Build Series - Pump + Front End...  
TH400 Valve-Body + Servos:    • TH400 Build Series - Valve-Body + Servos  
TH400 Filter + Pan + Modulator + Governor + Speedo:    • TH400 Build Series - Filter + Oil Pan...  
TH400 Different Cases (Chevy vs BPO): Coming Soon!



RESOURCES:
1) Apparel:
Eyes: https://amzn.to/2JguhZN
Ears: https://amzn.to/3uuVyOr https://amzn.to/3P7AerI
Lungs: https://amzn.to/3VGhLoD https://amzn.to/3FAFX6w
Hands:
Nitrile Gloves: https://amzn.to/2Y6XwSN
Work Gloves: https://amzn.to/3ux43IT https://amzn.to/3P9xtpN
Feet: https://amzn.to/2GD9eP7
Work Shirt: https://amzn.to/3HhDdMf
Work Pants: https://amzn.to/3Pfe8nq
3) TH400 Repair Manuals: 📕
https://amzn.to/30DYx6Y
4) TH400 Tools: 🔧
230-Piece Tool Set: https://amzn.to/2L0AtWv
Pump Puller: https://amzn.to/2VmhXgZ
3-Ton Arbor Press (12 inch working height): https://amzn.to/2Reqmyx
Lip Seal Installer: https://amzn.to/2Gz4KI5
Lip Seal Installer (Huge Time/Headache Saver): https://amzn.to/2MxUC8O
Pump Alignment Band: https://amzn.to/2J13lNF
Universal Clutch Spring Compressor (Use in trans & drums): https://amzn.to/2YHQGn6
Adjustable Clutch Spring Compressor (Use with shop press): https://amzn.to/2W2DAQs
Universal Bushing Driver Kit (Larger Sizes): https://amzn.to/2M1aQHn
Universal Bushing Driver Kit (Smaller Sizes): https://amzn.to/2Et1ON3
Snap Ring Pliers (Clutch Spring Compressor Snap Ring): https://amzn.to/2GwwixP
Snap Ring Plier Set (Pump Circlip Snap Rings): https://amzn.to/2IUxpdu
Feeler Blades (Straight): https://amzn.to/3uwQTvi
Feeler Blades (Offset): https://amzn.to/3Y3ehy1
Pick Set: https://amzn.to/3F9ezL7
Pocket Screwdriver: https://amzn.to/3FfsCiC
5) TH400 Parts: 🔩
Overhaul Kit (Includes Bushing Kit, Bearing Kit, Bands, etc): https://amzn.to/2MhK4e7
Valve-Body Kit: https://amzn.to/2HwNAwE https://amzn.to/3iKqF67
Accumulator (Aluminum): https://amzn.to/3FhYxzt
Band (Front) (Intermediate): https://amzn.to/2EpgZGU
Band (Rear) (Low/Reverse): https://amzn.to/2QjqpbN
Intermediate Sprag: https://ebay.us/PA63ZL
Intermediate Roller: https://ebay.us/lK2SXd
Low Roller: https://amzn.to/3W17C5P
Pump Gears: https://ebay.us/uLDtbP
Bushings:
Kit: https://amzn.to/2QpxY0V
Upgraded Case Bushing: https://amzn.to/3Bjhy2L
Bearing Kit: https://amzn.to/30APEev
Washer Kit: https://amzn.to/2QgjPmx
Oversized Washer: https://ebay.us/H5BzBd
Governor Gear Kit: https://amzn.to/2WjQ7lU
Modulator (Red Stripe): https://amzn.to/2ErS99H
6) Shop Supplies: ✏️
Transmission Assembly Gel: https://amzn.to/2WrN7nT
Thread Locker: https://amzn.to/2YLtmFk
Brake Parts Cleaner: https://amzn.to/2HxQ1Pz

DISCLOSURE: 🕵
Links provided are affiliated links with the associated websites. While there is no extra cost to the purchaser, a small portion of the sale goes to support this YouTube channel.