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TA Ramp or Sprague?

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D Combs

03-15-2001 16:50:46




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I removed my first TA from a 350 today the low range was out. After taking off the bearing cage I found the rollers to be in bad shape was this my problem or do I need to take the rest of it apart?? All the gears and bearings I can see look great. Also in books I see the term ramp and rollers and sprague type I take it mine is ramp and roller type .What is the diffrence ???? Thanks a lot




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Ace Schrunk

03-15-2001 19:56:58




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 Re: TA Ramp or Sprague? in reply to D Combs, 03-15-2001 16:50:46  
One think no one has pointed out when rebuilding this type of TA. that the sun gears must be timed when but back together. Just thought would remind you of that



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D Combs

03-15-2001 19:22:11




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 Re: TA Ramp or Sprague? in reply to D Combs, 03-15-2001 16:50:46  
John is rebuilding the over running clutch mean replaceing the springs,pushers,and rollers? thanks Dale



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John In Iowa

03-16-2001 04:03:40




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 Re: Re: TA Ramp or Sprague? in reply to D Combs, 03-15-2001 19:22:11  
I got my overrunning clutch from BMD and it looks like they refinished the ramps and put in new larger rollers and springs. Steel Wheel Ranch has the new Sprague Clutch and you have to send them your old clutch and gear cage. They turn down the back of the gear cage where the overrunning clutch fits on.



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John In Iowa

03-15-2001 18:39:19




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 Re: TA Ramp or Sprague? in reply to D Combs, 03-15-2001 16:50:46  
I just got my 400 back together last weekend after rebuilding the TA. I put in a new main clutch, TA clutch, new bearings in the TA and a rebuild overrunning clutch. With all the seals and oil the cost for parts was just under $800. In the term ramp clutch, you have 8 rollers and springs to push them up the ramp to lock the gear cage up on the back of the gear case. In the sprague overrunning clutch you have about 20 rollers that run up the ramp to lock up the gear cage with no springs. I went with the original overrunning clutch that was rebuild by BMD for about $117 and use Hi-tran for the lube in the transmission. So far everything is working wonderful and I can not see any advantage over the two if you use them right.


John In Iowa

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Brent Combs

03-15-2001 17:44:47




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 Re: TA Ramp or Sprague? in reply to D Combs, 03-15-2001 16:50:46  
sorry i can't help you out i was just curious where u r from? My name is brent combs im from dallas, SD dont see too many people with the same last name



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D Combs

03-15-2001 19:30:54




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 Re: Re: TA Ramp or Sprague? in reply to Brent Combs, 03-15-2001 17:44:47  
Brent I live and grew up in NC . My great great great grand parents lived here also. There are Combs's everywhere around here.



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