TH400 Build Series - Installing Intermediate Clutch, Front Band, Direct + Forward Clutch Drums

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See what it takes to install the the remaining TH400 internals into the transmission case.
Learn about SOPs (standard operating procedures), as well as some tips & tricks.
1). TH400 Intermediate Clutch.
2). TH400 Manual 2nd Gear (front) Band.
3). TH400 Direct Clutch Drum.
4). TH400Forward Clutch (Input) Drum.
Help This Channel Grow:
Coming Soon!
*****TH400 Build Series*******
TH400 Teardown: • TH400 Rebuild Series -...
TH400 Inspection: • TH400 Rebuild Series -...
TH400 Building Clutch Drums: • TH400 Build Series - B...
TH400 Building Clutch Drums (Continued): • TH400 Build Series - B...
TH400 Bushings: • TH400 Build Series - B...
TH400 Prepping Case for Assembly: • TH400 Build Series - P...
TH400 Planetary Gear Set - Assembly & Installation: • TH400 Build Series - P...
TH400 Intermediate Clutch, Band, Direct & Forward Drums: You're currently watching it.
TH400 Pump + Front End-Play: • TH400 Build Series - P...
TH400 Valve-Body + Servos: • TH400 Build Series - V...
TH400 Filter + Pan + Modulator + Governor + Speedo: • TH400 Build Series - F...
TH400 Different Cases (Chevy vs BPO): Coming Soon!
RESOURCES:
1) Apparel:
Eyes: amzn.to/2JguhZN
Hands:
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Work Gloves: amzn.to/3ux43IT amzn.to/3P9xtpN
Shirt: amzn.to/3HhDdMf
Pants: amzn.to/3Pfe8nq
3) TH400 Repair Manuals: 📕
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4) TH400 Tools: 🔧
230-Piece Tool Set: amzn.to/2L0AtWv
Pump Puller: amzn.to/2VmhXgZ
3-Ton Arbor Press (12 inch working height): amzn.to/2Reqmyx
Lip Seal Installer: amzn.to/2Gz4KI5
Lip Seal Installer (Huge Time/Headache Saver): amzn.to/2MxUC8O
Pump Alignment Band: amzn.to/2J13lNF
Universal Clutch Spring Compressor (Use in trans & drums): amzn.to/2YHQGn6
Adjustable Clutch Spring Compressor (Use with shop press): amzn.to/2W2DAQs
Universal Bushing Driver Kit (Larger Sizes): amzn.to/2M1aQHn
Universal Bushing Driver Kit (Smaller Sizes): amzn.to/2Et1ON3
Snap Ring Pliers (Clutch Spring Compressor Snap Ring): amzn.to/2GwwixP
Snap Ring Plier Set (Pump Circlip Snap Rings): amzn.to/2IUxpdu
Feeler Blades (Straight): amzn.to/3uwQTvi
Feeler Blades (Offset): amzn.to/3Y3ehy1
Pick Set: amzn.to/3F9ezL7
Pocket Screwdriver: amzn.to/3FfsCiC
Sanding Stone: amzn.to/3wtlnzs
Welding Clamp: amzn.to/3WPRTXn
Mini Hammer: amzn.to/3JBiLXw
5) TH400 Parts: 🔩
Overhaul Kit (Includes Bushing Kit, Bearing Kit, Bands, etc): amzn.to/2MhK4e7
Valve-Body Kit: amzn.to/2HwNAwE amzn.to/3iKqF67
Accumulator (Aluminum): amzn.to/3FhYxzt
Band (Front) (Intermediate): amzn.to/2EpgZGU
Band (Rear) (Low/Reverse): amzn.to/2QjqpbN
Intermediate Sprag: ebay.us/PA63ZL
Intermediate Roller: ebay.us/lK2SXd
Low Roller: amzn.to/3W17C5P
Pump Gears: ebay.us/uLDtbP
Bushings:
Kit: amzn.to/2QpxY0V
Upgraded Case Bushing: amzn.to/3Bjhy2L
Bearing Kit: amzn.to/30APEev
Washer Kit: amzn.to/2QgjPmx
Oversized Washer: ebay.us/H5BzBd
Governor Gear Kit: amzn.to/2WjQ7lU
Modulator (Red Stripe): amzn.to/2ErS99H
4L80E Center Support Bolt: amzn.to/3Dq5FJ4
6) Shop Supplies: ✏️
Transmission Assembly Gel: amzn.to/2WrN7nT
Light Tack: amzn.to/3NqXf7D
Firm Tack: amzn.to/3GKp34i
Hi-Temp Grease: amzn.to/3S2j6oY
Thread Locker: amzn.to/2YLtmFk
Brake Parts Cleaner: 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 RU-vid channel.

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Опубликовано:

3 окт 2024

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Комментарии : 29

@christophersanders5007 Год назад

My early model 4L80E did not have a wave plate in the intermediate clutch pack. I just put it back together with out one. The clutch pack clearance looked to be good to go. Had a hell of a time getting the direct drum spline into the clutch pack without that tool you guys have. I air tested it, and it did not rise letting me know it was seated all the way in.

@kenchaffin4946 Год назад

Awesome, can't wait for the next one

@kenchaffin4946 Год назад

Great show

@SouthpawAutoworks Год назад

Thanks Kenny!

@nv1493 7 месяцев назад

Great series to help me through my th400 rebuild. Question that came to mind watching the intermediate get stacked - is it ok to put a friction directly onto a wave? Or should a steel be placed on the wave, then friction, etc. I'm asking because I don't know if the wave raised points will damage the friction as the pack is compressed. Seems that the 4 or 5 raised wave sections might be a lot of stress points in the friction. I don't know! Thanks !

@micks72malibu Год назад

Great videos.

@SouthpawAutoworks Год назад

Positive feedback is always appreciated. Thank you for dropping us a line.

@lovepreetsinghhanjra1997 Год назад

Nic work sir

@SouthpawAutoworks Год назад

Thanks for dropping us a line.

@rrip1 Год назад

Installing the direct drum is always a challenge for me.

@SouthpawAutoworks Год назад

Having an installation tool definitely makes life easier. If I'm installing the direct drum without a tool, then I like to use a pocket screwdriver to align all of the clutch pack teeth (Intermediate Clutch). Teeth lined up, and clutch pack centered. Seems like it makes installation a little easier. But then again, maybe it's just all in my head. ;)

@onetransmission7871 Месяц назад

It's extremely simple and usually takes 5-10 seconds

@kjellandersstuen4178 Год назад

Hello. What a wonderfully informative and educational video. I'll start with my TH400. But I need advice. There is a noise in the gearbox on first gear only 1. Only 1. Does not follow engine speed but driving speed. This is not a working noise. Otherwise works great. The oil is fine and at the right level. Afraid that it is not easy to see what is wrong when it is dismantled. The car is a 1968 Corvette 327. Hope someone out there can give some tips that are correct. 🙂

@brandonbarnard9515 11 месяцев назад

Could be the HD 400 trans they used on the motorhomes. They had straight cut gears I believe on 1st and 2nd gear. The helical gears were used on normal production th400 trans. You may or may not have the HD 400 trans but that's the 1st reason that comes to my mind. I've had one and they tend to get loud when going up the rpm band. Check your trans numbers and see if you have one. If you do it's a stock car racers Holy grail.

@clarencemack4382 Месяц назад

Mine Did not come with a wave plate after removing!! Do I need it or no for intermediate

@steffenbecker970 Год назад

What can be a major issue that the intermediate clutch backing plate breaks? We found a crack on that plate as we disassemble the TH400! We can’t figure out why it happens. So if you got an idea let us know please. Thank you 🙏🏻

@Pabkojdim Год назад

How many steel and friction plates go in the forward drum?

@XxxxX99699 Год назад

❤❤❤❤❤❤❤

@inscoredbz Год назад

I'm doing the sonnax th400 case saver and using a full manual valve body that keeps the band. Can you upgrade to the wider 1.25" front band while using the th400/early 4l80e case saver? Will it need the later longer servo pin if it will work with the wider band? I know you can use the wider 4l80e band with the longer servo pin in a 400, but will it still work using the sonnax case saver/intermediate snap ring support?

@ponway Год назад

Very informative and helpful video! Question, when you are doing the air check on the direct drum, are you shooting air into the center support bolt or the hole to the right? I’m not getting any action out of the direct drum as in your 2nd test. Putting a 400 back together for my Jeep J20 truck. Thank you for taking the time to create these videos!

@ponway Год назад

Never mind, I found my problem. I had coated the scarf seals on the center support with green Assembly Goo, shouldn’t have done that. Cleaned it off and coated with trans fluid and test fine now. On another note, a PosiLock model 104 puller with it’s T handle works great to grip the shaft and set the assembly in the case. It also worked great in a drill press to compress the springs and remove the snap rings in the clutches. Been a handy tool for a number of things over the years!

@SouthpawAutoworks Год назад

Right on. Glad you got it figured out. The green stuff is "firm tack"...great for holding larger/heavier transmission parts in place, as an assembly aid. The blue stuff is "light tack" and works great for lubricating stuff...and holding smaller/lighter trans parts in place, as an assembly aid. Gonna have to take a look at that setup (PosiLock puller). Thanks for sharing. The positive feedback is appreciated. Thanks for dropping us a line.

@ponway Год назад

Thank you for the info!

@anthonyponis9684 Год назад

@@ponway I recently mixed the heavy goo 2 to 1 with dextron and made lighter assembly goop, works excellent!

@SouthpawAutoworks Год назад

Right on! Thanks for sharing.

@immortalmotors562 Год назад

Great video. I’m planning on doing my own th400 rebuild that came out of a cj7. I’ve heard that the bell housing is different due to it fitting to the amc 304. Are there any other differences?

@SouthpawAutoworks Год назад

Right on! The output shaft and center support come to mind. Output Shaft: There's a number of different output shafts. They vary in length, and in spline count. Jeep is 10 spline...whereas most others are 32. Center Support: On GM TH400's, in order to remove the Center Support from the case, a snap-ring and a bolt (Intermediate Clutch feed hole bolt) must be removed. Then the support is free to slide out of case. On some TH400's, there's also a set screw (allen head) that pushes on one of the lugs of the Center Support. The head of this set screw is accessed through the valve-body side of the transmission case. Not sure if that's a Jeep thing, but, thought I'd throw that out there. If you're having trouble removing the center support, might want to look for a set screw. Hope this helps. The positive feedback is appreciated. Thanks for dropping us a line.

@brianarrington4569 Год назад

@@SouthpawAutoworks these are the best videos most informative and detail that I have ever seen..PERIOD!.. Please do a series of videos on the 1969 style of C4 C5 and aod transmission.. the old school classics... you guys are amazing thank you so much!

@SouthpawAutoworks Год назад

I believe that we've got some C-4 transmissions handy. We would love to do a series on that trans...as time permits. Wow, thank you! Your feedback is greatly appreciated. Thanks for dropping us a line.