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Flathead 3 speed is STUCK!

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Old Nov 2, 2001 | 03:10 PM
  #1  
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saxtonj
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From: Marshall TX
Flathead 3 speed is STUCK!

I just rebuilt my '49 Ford F-1's 3 speed floor shift trans and now it is stuck in second gear. I took off the shifter and tower and it looks as if the synchro assembly has seperated and the assembly will not slide back where it should be. Does anyone know what could have caused this? I don't want to pull the trans and tear it down to only have it happen in the first 2 miles again like it did the first time.

Thanks for any help,

James
 
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Old Nov 5, 2001 | 10:07 AM
  #2  
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saxtonj
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From: Marshall TX
Flathead 3 speed is STUCK!

Tore open the trans...AGAIN. Turns out the new synchro assembly has "seperated" and is causing the problem. I wonder if it was something I did/didn't do, or problem with the assembly.

James
 
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Old Nov 5, 2001 | 11:14 AM
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lanero
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From: South Sioux City, NE USA
Flathead 3 speed is STUCK!

Does that trans have shift stops?
Maybe the stops need adjustment.

Roger Lane
Test Analyst
Sr. Automated Test Engineer

 
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Old Nov 5, 2001 | 11:25 AM
  #4  
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saxtonj
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From: Marshall TX
Flathead 3 speed is STUCK!

I don't think it has stops. The "outside" of the synchro assembly is slinding to the rear of the trans, while the "inside" is staying put. The "inserts" are exposed after shifting into second....if that helps any in your diagnosis.

J
 
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Old Nov 27, 2001 | 01:51 AM
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mrlaserboy
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Flathead 3 speed is STUCK!

 
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Old Nov 27, 2001 | 10:42 AM
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saxtonj
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From: Marshall TX
Flathead 3 speed is STUCK!

I hope this helps someone.... my output shaft was wrong. It allowed second gear to slide back to far. It was about 1/4" too long.
 
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