Push button 727 notshifting shifting manually

[FuryousFrank]

64' Fury 727 with Reverse manual valve body not shifting when buttons are pushed. The cable is adjusted properly and each gear will engage when at a standstill. Fluid is full and looks clean, no leaks, and not slipping! Any advise would be appreciated.

 

[dvw]

What happens if you try to start out in 2nd or 3rd? It sounds like you are saying it will move. Who's valve body is it? Has the trans been apart since this condition started? If it isn't truly a reverse manual type valve body the trans must have the rear pump gears as they provide governor pressure to enable a shift.
Doug

 

[FuryousFrank]

Yes it moves, It is a reverse manual valve body. Starting out in 1st it wont upshift to 2nd.
Starting out in 2nd it doesn't upshift to 3rd when drive button is pushed. Starting in 3rd it goes and says in 3rd
I bought the car in June and it shifted ok and I drove it 100 miles home on I-79. The car was built by the previous owner. The trans has not been taken apart since I've owned it.

 

[Dave6T4]

One hole filter on valve body? '64 transmission has front and rear pumps and require 2 hole filter.

 

[T Brashears]

You made a call to a local shop and your call was returned. It was me.You can PM me if you want.

 

[Ron H]

Please allow me to ask here: I’ve heard of a manual valve body, but not familiar with reverse-manual VB. Just curious on this.

 

[FuryousFrank]

On a push button shifter drive and low buttons are reversed.

 

[33 IMP]

Please allow me to ask here: I’ve heard of a manual valve body, but not familiar with reverse-manual VB. Just curious on this.

You understand, full manual, I'm sure. All shifts, up and down, have to be made manually.
A reverse body exchanges first gear location for drive. So the pattern on a non pb shifter becomes PRN123. The idea is that all upshifts are AWAY from neutral. Actually used as far back as the mid sixties on race hemi automatics with column shifters.

 

[Ron H]

Thanks much. Yes, I've seen that setup I think SS's and a vid of dvw's nifty '64 (also moved to the right side). Would like that in my '63 as you say shifting is safer moving away from N or R. So far so good after all the years, though I don't manually shift all that often. I don't want to encounter a 'first time for everything' - thing though, lol.
Letting a friend drive my ride years ago, he broke the park sprag pulling the lever down while in motion...oh he says, thought I saw that the N button goes in pulling the lever down. Well, yeeah, but you're also engaging park!

 

[33 IMP]

Thanks much. Yes, I've seen that setup I think SS's and a vid of dvw's nifty '64 (also moved to the right side). Would like that in my '63 as you say shifting is safer moving away from N or R. So far so good after all the years, though I don't manually shift all that often. I don't want to encounter a 'first time for everything' - thing though, lol.
Letting a friend drive my ride years ago, he broke the park sprag pulling the lever down while in motion...oh he says, thought I saw that the N button goes in pulling the lever down. Well, yeeah, but you're also engaging park!

My 55 chevies with the iron glide have a PNDLR shift pattern
When you can't force a downshift with
the gas pedal, and you want one anyway, you'd better TAP the lever from D to L You'll only yank the lever down for L at 40mph, once.

Modern shifters are so good, it's hard to miss a shift, especially with a good ratchet shifter. I have three cars with a manual only vb, two reverse, and one forward. A cheetah shifter, a B&M ratchet, and a modified column shift in my A12. I just have to remember which car I'm in, and how the trans works, lol.

 

[Ron H]

just have to remember which car I'm

Lol. Yeah, I sure like the button shift though, only thing keeping me from another 4-sp much as I like 'em. Had a '63 GP floor shift and think I recall 'R' was all the way back, one of my GTO's had the dual-gate. Know what you mean as I have vehicles with a column and floor shift aside from the PB, sometimes I'm trying to grab around the column, or floor, or buttons from one to the next...the older I get.

Wasn't the demise of the PB due to issues with fleet/rental sales as they wanted more uniformity among the big three? Seem to recollect reading about it years ago. Who knows, one indicator just might be when my buddy drove my Plymouth toasting the park..

 

[33 IMP]

Lol. Yeah, I sure like the button shift though, only thing keeping me from another 4-sp much as I like 'em. Had a '63 GP floor shift and think I recall 'R' was all the way back, one of my GTO's had the dual-gate. Know what you mean as I have vehicles with a column and floor shift aside from the PB, sometimes I'm trying to grab around the column, or floor, or buttons from one to the next...the older I get.

Wasn't the demise of the PB due to issues with fleet/rental sales as they wanted more uniformity among the big three? Seem to recollect reading about it years ago. Who knows, one indicator just might be when my buddy drove my Plymouth toasting the park..

I honestly don't know the reason. That story is as good as any, I suppose. Packard, AMC, Mercury and Edsel used pb shifters too, (58 Edsel had them in the middle of the steering wheel, another better idea from ford) just not nearly as long as Mopar.
And apparently they are making a comeback. Aston Martin, Jaguar, and Hyundai are using them again.

 

[dvw]

So i'm assuming it is a Turbo Action Chettah RMVB. You stated all gears function from a stop. There is nothing in the VB itself that would prevent upshift. Will it shift 1st to 3rd? If so you have a 2nd gear band issue. If not I'd like to see a pressure reading at the accumultor port. Along with a reading at the KD servo port while in 3rd gear. Should be 100-110 psi. If there are both OK? Drop the pan. Place a small mirror up above the valve body. Have someone shift while you watch the rooster comb where it indexes on the detent ball. It should fit in the center of the rooster comb at each shift. If this all checks out? I'd pull the vb and disasemble. I've had two cracked push button valve bodies in the last year.
Doug