Re: 727 first to second bind-up problem
[Re: uponblocks]
#62193
05/23/08 04:26 PM
05/23/08 04:26 PM
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Joined: Jan 2003
Posts: 25,982 Rio Linda, CA
John_Kunkel
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Joined: Jan 2003
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Rio Linda, CA
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A '77 steel separator plate should have a restricted orifice that feeds the rear servo, did you enlarge the orifice? If so to what size?
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Re: 727 first to second bind-up problem
[Re: John_Kunkel]
#62194
05/23/08 05:10 PM
05/23/08 05:10 PM
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Joined: Feb 2008
Posts: 40 South Dakota
uponblocks
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South Dakota
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I know my kickdown band is the flex type, with a stock 2.9:1 lever. I adjusted the bands to the specs in my 1966 plymouth service manual. I did drill a bunch of holes out on the seperator plate to 3/16" Not real sure which ones go where, but did exactly as the directions show. I put a blockoff plug in the passage to the shift governer, and a restrictor in the passage to either the direct clutch or the forward clutch cant remember which, but did as the pictures and directions showed. I think it is a low band apply valve body, because it will compression brake in low when I let off the gas. I have the late style servo pistons, and the TF-3 kit had me put a spacer in the low/reverse piston to block the cushion spring. I also changed the large springs in one or both of the servos according to the directions. Its funny it only does this intermitantly, because I backed down my driveway and took off, and shited first to second then to third several times, and sometimes will work perfect, then sometimes will bind up. I am wondering if it might be a servo hanging up or something. It also has a low reverse drum out of a 62 pushbutton tranny because the old one had been too hot. Also wanted to note, when it does this if I shift back to low it comes out of it instantly, but when I shift up to second it will do it again. I cant remember, but I think it came out of it when I shifted to high also. Thanks again.....
Last edited by uponblocks; 05/23/08 05:17 PM.
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Re: 727 first to second bind-up problem
[Re: uponblocks]
#62200
05/26/08 07:38 PM
05/26/08 07:38 PM
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Joined: Jan 2003
Posts: 25,982 Rio Linda, CA
John_Kunkel
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Too Many Posts
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Posts: 25,982
Rio Linda, CA
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The 2.9 lever isn't ideal but it has been used an many TF's without problem; the low ratio levers should be adjusted looser than other levers, try backing out 2.5 turns.
All of the problems seem to point to a problem in the rear band/servo except for your statement "I tried to accelerate, and the truck tries to lurch ahead, but wont move". Did this happen with the shifter in "1"? If it did, there are multiple problems because a rear band problem wouldn't prevent the vehicle from moving.
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Re: 727 first to second bind-up problem
[Re: uponblocks]
#62203
05/28/08 03:38 PM
05/28/08 03:38 PM
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Joined: Jan 2003
Posts: 25,982 Rio Linda, CA
John_Kunkel
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Posts: 25,982
Rio Linda, CA
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The throttle pressure linkage won't cause the problem you're having.
The total bindup in 2nd points back to a problem in the rear band/srevo.
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