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willysmjeeps.com :: View topic - T84 Transmission
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T84 Transmission

 
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wildman
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Joined: Jan 22, 2014
Posts: 11
Location: lewisville, NC

PostPosted: Thu Apr 20, 2017 9:00 am    Post subject: T84 Transmission Reply with quote

Hey guys. I recently bought a 1944 MB, but the transmission had been replaced with a t90. Now I am in need of a t84 to swap out. Does anyone know how hard it is to rebuild a t84? I'm wondering if I should buy an old one or try to get one that doesn't need restoring. I'm having trouble finding any to be honest. I've rebuilt a t90 before. Just let me know if you have any advice. Thanks.
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Ben
54 m38a1 52 m38a1
44 Mb/GPW project
86 CJ7
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carioca
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Joined: Jul 07, 2011
Posts: 22
Location: Rio de Janeiro - Brazil

PostPosted: Fri Apr 21, 2017 3:55 pm    Post subject: Reply with quote

.. try to check out with John :


.. https://midwestmilitary.com/

..
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wesk
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Joined: Apr 04, 2005
Posts: 12443
Location: Wisconsin

PostPosted: Fri Apr 21, 2017 7:47 pm    Post subject: Reply with quote

Start with John Barton's T-84 rebuild guide:

Pt 1 - Dis-assembly
http://jeepdraw.com/John_Barton3-GEARBOX2.html

Pt 2 Inspection
http://jeepdraw.com/John_Barton3-GEARBOX3.html

Pt 3 Assembly
http://jeepdraw.com/John_Barton3-GEARBOX.html

The T84 portion of manual TM 10-1513:
http://jeepdraw.com/images/jeepdraw/JB-GEARBOX/TM-10-1513_TRANSMISSION.pdf

Bob Notman's Troubleshooting & Rebuild guide:
Intro:
http://jeepdraw.com/images/jeepdraw/JB-GEARBOX/TM-10-1513_TRANSMISSION.pdf

Sale site:
http://www.42fordgpw.com/tranny1.html
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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

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wildman
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Joined: Jan 22, 2014
Posts: 11
Location: lewisville, NC

PostPosted: Fri Apr 21, 2017 9:31 pm    Post subject: Reply with quote

Thanks! If I can get my hands on one I'll rebuild it!
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Ben
54 m38a1 52 m38a1
44 Mb/GPW project
86 CJ7
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wesk
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Joined: Apr 04, 2005
Posts: 12443
Location: Wisconsin

PostPosted: Fri Apr 21, 2017 9:40 pm    Post subject: Reply with quote

Keep in mind there were several vehicles that used the T-84 series tranny and some of those may be easily adapted.
T-84A-1, 1A and T84B-1A
Continental Late 32-33 Flyer
Graham 36 80 Crusader

T84-1
Continental 32 Beacon, Early Flyer

T-84C-1
Mack 37-40 2M4A
Reo Truck 36-39 4-75, 3/4 ton

T84D-16
Willys 38-39 Pass.
Willys 39 Overland

T-84E-16
Bantam 38-40

T-84F-1
Stude 39-40 Champion (over drive)

T-84G-16
Nash 41-42 40

AS1 T-84J
Am Bantam (Jeep) 40 BRC 1/4T 44

AS1 T-84J
Willys 41-45 Army 1/4T

AS2 T-84J
Ford Jeep 42-45 GPW 1/4 T 44

T84H-1
Bantam 41-42


Also you may need to get a different tranny crossmember if a later CJ crossmember has been used with the T90.

Herm the Overdrive Guy sells overhaul kits:
http://hermtheoverdriveguy.com/t-84-rebuild-kit-120
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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
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wildman
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Joined: Jan 22, 2014
Posts: 11
Location: lewisville, NC

PostPosted: Sat Apr 22, 2017 6:14 pm    Post subject: Reply with quote

Thanks! Actually my uncle gave me an original MB crossmember to use. So I'm all good there! I'll keep checking Craigslist for a while and see what I can find.
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Ben
54 m38a1 52 m38a1
44 Mb/GPW project
86 CJ7
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