Rear End Install

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lmazoway
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Joined: Tue Feb 24, 2026 3:24 pm
First Name: Larry
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* REQUIRED* Type and Year of Model Ts owned: 1926 Model T
Location: Kennebunk, Maine

Rear End Install

Post by lmazoway » Fri Mar 27, 2026 3:00 pm

I removed the differential which was pretty straight forward. I'm ready to reinstall the unit and am wondering if there is something I should be aware of so I don't mess it up. I'm going to grease the universal joint heavily before installing.

Thanks for the help.

Larry
Kennebunk, Maine


Rich P. Bingham
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Re: Rear End Install

Post by Rich P. Bingham » Fri Mar 27, 2026 3:18 pm

If you pack the ball with stiff grease around the U-joint it’s easier to align with the trans. tail shaft, but it’s still best to have help as you move the axle/driveshaft assembly into position.
Get a horse !

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TRDxB2
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* REQUIRED* Type and Year of Model Ts owned: Speedsters (1919 w 1926 upgrades), 1926 (Ricardo Head)
Location: Moline IL
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Re: Rear End Install

Post by TRDxB2 » Fri Mar 27, 2026 4:18 pm

As stated above you'll need help because the end of the u-joint has a mind of its own when aligning with the transmission ball cap. While not necessary they do make a tool to support.. DIY? .
Attachments
ujoint tool.png
ujoint tool.png (39.5 KiB) Viewed 52 times
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Erik Johnson
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Location: Minneapolis, MN

Re: Rear End Install

Post by Erik Johnson » Fri Mar 27, 2026 6:08 pm

Read these threads in order to avoid pinching or cutting your fingers on the driveshaft ball while installing universal joint shaft into the "fourth main" of the engine.

https://www.mtfca.com/discus/messages/1 ... 1300480114

https://www.mtfca.com/discus/messages/1 ... 1292108551

Since my contribution to the 2011 thread, I have acquired universal joint alignment Z tool at a swap meet, which is basically a thin, open end wrench with a long handle (Dan Hatch posted a photo of one in the second link I posted above).


Allan
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Location: Gawler, Australia

Re: Rear End Install

Post by Allan » Fri Mar 27, 2026 6:10 pm

Make sure the square head on the spring centre bolt is located in the square hole in the rear cross member on the frame, if indeed you took the spring out with the rear end.

Alan from down under.

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