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Will Someone Help Me


 
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Destefano027
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Joined: 10 May 2005
Location: pittsburgh pa

PostPosted: Mon Mar 19, 2007 3:00 pm    Post subject: Will Someone Help Me Reply with quote

i have a 78 cj 7 that does not more forward just backward it feels like it want to move but it doest i no it is not the trany because i just had it rebuilt but all at the same time i put a dana 44 rear and a 30 front i also changed the transfer case could it be one of them what could be wrong why dosent my jeep move
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ehirner
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Joined: 01 Jan 2004
Location: Eastern PA

PostPosted: Mon Mar 19, 2007 5:54 pm    Post subject: Reply with quote

Does it roll forward if you put it in neutral and push it?
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Destefano027
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Joined: 10 May 2005
Location: pittsburgh pa

PostPosted: Tue Mar 20, 2007 4:19 am    Post subject: Reply with quote

yes
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ehirner
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PostPosted: Wed Mar 21, 2007 3:22 pm    Post subject: Reply with quote

I would think that rules out the axles, differentials, brakes frozen solid, and t-case. Perhaps something tranny or engine related.
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Destefano027
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Joined: 10 May 2005
Location: pittsburgh pa

PostPosted: Thu Mar 22, 2007 3:10 am    Post subject: Reply with quote

i realy dont think it is the motor or the trany they were just rebuilt. i was thinking it would be in something i changed because it worked before i changed it like the axles or transfer case because they were both used
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Code3TJ
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Joined: 01 Jan 2004
Location: Uzbekistan

PostPosted: Thu Mar 22, 2007 8:42 am    Post subject: Reply with quote

Have you (carefully) jacked it up to see which tires you can get to turn under power?
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Destefano027
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Joined: 10 May 2005
Location: pittsburgh pa

PostPosted: Thu Mar 22, 2007 9:11 am    Post subject: Reply with quote

yes all the tires turn in the air but on the groung they dont turn but it does go in reverse
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Code3TJ
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PostPosted: Thu Mar 22, 2007 9:49 am    Post subject: Reply with quote

Destefano027 wrote:
yes all the tires turn in the air but on the groung they dont turn but it does go in reverse

They turn, but is this under power or just turning them by hand? What does it do if you put it into 4H? Do the driveshafts turn?
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Destefano027
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Joined: 10 May 2005
Location: pittsburgh pa

PostPosted: Thu Mar 22, 2007 11:59 am    Post subject: Reply with quote

everything works properly all like it should the tranny shifts like it should and the tires spin when you hit the gas i was thinking that maby it was in the rear end the pinon gear or ring gear something like that but im not sure what to check for
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Orangeamc13
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Joined: 20 Feb 2006
Location: East Springfield, Massachusetts - U.S.A.

PostPosted: Thu Mar 22, 2007 2:04 pm    Post subject: Reply with quote

Are the differential gears the same size?
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Destefano027
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Joined: 10 May 2005
Location: pittsburgh pa

PostPosted: Thu Mar 22, 2007 4:39 pm    Post subject: Reply with quote

yea they are 3 73
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Brad The Best
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Joined: 14 Jan 2007
Location: Kamloops B.C Canada

PostPosted: Sat Mar 24, 2007 10:14 pm    Post subject: Reply with quote

Destefano027 wrote:
i realy dont think it is the motor or the trany they were just rebuilt. i was thinking it would be in something i changed because it worked before i changed it like the axles or transfer case because they were both used


just because they were rebuilt doesn't mean that some one didn't mess up.
i would guess your transmission is the problem .

you could take the diff covers off and then spin them and watch what happens check backlash etc inspect for wear or misalignment , if you think tis the diffs that is .
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Destefano027
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Joined: 10 May 2005
Location: pittsburgh pa

PostPosted: Sun Mar 25, 2007 5:40 pm    Post subject: Reply with quote

it was the rear end the pinon was all tore up it only had a couple of teeth left on it . what could of caused this
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Brad The Best
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Joined: 14 Jan 2007
Location: Kamloops B.C Canada

PostPosted: Sun Mar 25, 2007 7:41 pm    Post subject: Reply with quote

burn out's , improper backlash setting , backing into something really hard , pinion aligned wrong

basically misalignment and abuse or defective , glad to hear you found out what was wrong
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Destefano027
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Joined: 10 May 2005
Location: pittsburgh pa

PostPosted: Tue Mar 27, 2007 3:13 am    Post subject: Reply with quote

thanks for all the help
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