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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Driveshaft issue

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Old Mar 28, 2021 | 01:29 PM
  #1  
ArizonaF250's Avatar
ArizonaF250
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Driveshaft issue

Ok....full disclosure. I'm probably 3 steps below an amateur mechanic but this site and the people on it are frigging awesome.

So I just want to make sure that I'm not losing my s#%@. 1986 Ford F250 460 4wd. Pulled the motor...had it rebuilt....putting everything back together....last piece...Front driveshaft. Now it's shorter than when it came out.

Question....what exactly did I F up? Or...does the driveshaft magically expand? Again...I'm 3 steps below an amateur.

Thank you Everyone. You guys and gals are a phenomenal resource for an idiot like me. And I just love those Fords....even though it's killing me.
 
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Old Mar 28, 2021 | 02:22 PM
  #2  
Max Capacity's Avatar
Max Capacity
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I'm no expert, I assume there is a slip joint in the shaft that will allow it to expand its length as the suspension moves. have you tried to pull it longer ?

Have you asked google the question, may be the answer is out there... See the picture it might give you a hint.

https://driveshaftstore.com/Ford-F150-Driveshaft-1986-342520


https://www.google.com/search?q=1986+Ford+F250+front+driveshaft&rlz=1C1OK WM_enUS906US906&oq=1986+Ford+F250+front+driveshaft &aqs=chrome..69i57j33i22i29i30.9021j0j15&sourceid= chrome&ie=UTF-8
 
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Old Mar 28, 2021 | 05:17 PM
  #3  
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From: St Albert, Alberta
Originally Posted by Max Capacity
I'm no expert, I assume there is a slip joint in the shaft that will allow it to expand its length as the suspension moves. have you tried to pull it longer ?

Have you asked google the question, may be the answer is out there... See the picture it might give you a hint.

https://driveshaftstore.com/Ford-F150-Driveshaft-1986-342520


https://www.google.com/search?q=1986+Ford+F250+front+driveshaft&rlz=1C1OK WM_enUS906US906&oq=1986+Ford+F250+front+driveshaft &aqs=chrome..69i57j33i22i29i30.9021j0j15&sourceid= chrome&ie=UTF-8


I second this it's likely the issue.

Just a word of advice pull the driveshaft apart clean the splines and relubricate them before you reinstall the drive shaft.

 
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Old Mar 28, 2021 | 06:49 PM
  #4  
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ArizonaF250
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Thanks for the advice guys!!!! I just knocked out the u-joints....putting new ones in then I'm going to follow your advice.

Thanks again!
 
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