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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

tranny problems

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Old Sep 2, 2002 | 03:18 PM
  #1  
Seifferlein's Avatar
Seifferlein
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tranny problems

I don't know much about transmissions but know a person that has been having trouble with theirs. They have a 70 half ton with an automatic transmission. When going from park to drive or reverse or going from reverse to drive there is a big klunk and you can feel it while sitting inside. He says that he does not think that it is a tranny mount. Is there some adjustment that could be made.
thanks for any help
brad
 
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Old Sep 2, 2002 | 03:22 PM
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Jimbare
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tranny problems

tell him to check the slack in the rear end. also check the motor mounts.
 
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Old Sep 2, 2002 | 03:28 PM
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tranny problems

Mine does this sometimes going from park to reverse, but not in any other gears. I have a C6 w/ 390 on a 72 F100. Where exactly in the rear can we check?
 
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Old Sep 2, 2002 | 06:34 PM
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Jimbare
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tranny problems

some of them just seem to have a lot of slack in the rear end. block the wheels, take the truck out of park, and turn the drive shaft. see how far it will turn each way. i have seen them with as much as 1/2 round of slack in them. some times they will realy bang when going into gear.
 
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Old Sep 3, 2002 | 04:45 PM
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tranny problems

>some of them just seem to have a lot of slack in the rear
>end. block the wheels, take the truck out of park, and turn
>the drive shaft. see how far it will turn each way. i have
>seen them with as much as 1/2 round of slack in them. some
>times they will realy bang when going into gear.
thanks for all of the information it turned out that it was the slack in the shaft. thanks again
brad
 
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Old Sep 3, 2002 | 05:54 PM
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tranny problems

 
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