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  #31  
Old 08-14-2006, 07:35 PM
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Alexander Alexander is offline
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Default RE: What Model Transmission?

Yes, you must stop fully before changing directions or your transmission case will crack. If you follow this rule, your cruise-o-matic will give you decades of good service.

I guess this transmission problem on Squarebird prevented it from being selected as the General Lee Car on the Dukes of Hazzard.

http://www.squarebirds.org/images/general_lee.jpg

Alexander
1959 Hardtop
1960 Golde Top
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  #32  
Old 08-14-2006, 07:42 PM
peeeot peeeot is offline
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Default RE: What Model Transmission?

Based on your rendering, Alexander, I'm sure it wasn't the visual appeal that kept it from being selected :P

I bet some previous owner cracked the case in exactly the way you guys described. MOST people I ride with do not stop their vehicles completely before shifting out of reverse. I've never understood why. Oh well... I guess as long as the transmission works okay, I'm not going to worry about it!

Any thoughts on the weird front clutch test behavior?
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  #33  
Old 08-18-2006, 11:14 PM
peeeot peeeot is offline
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Default RE: What Model Transmission?

A closer look at some of the illustrations in the manual suggest to me that the crack I found in the case is not in the vecinity of any fluid passages. As far as I can tell, the repair that has already been done MAY be adequate indefinitely.

My shift points are still off though. Today they were high again, closer to how they used to be. There is some slop in the pivot point of the accelerator linkage on the intake manifold that has made it difficult to adequately set a starting point for the throttle linkage adjustment for the transmission. I know that shortening the connecting rod decreases control pressure, and lengthening it increases pressure.

If shift points are high, is pressure most likely to be low or high?
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  #34  
Old 08-20-2006, 10:16 AM
peeeot peeeot is offline
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Default RE: What Model Transmission?

I've tried adjusting the throttle linkage in both directions and it made no difference in how the tranny shifted.

The way I see it, one of 3 things must be going on: either the control pressure is too low, the 1-2 shift valve is sticking, or the governor valve is sticking.

The strange behavior of the front clutch in the air pressure test has me concerned that there is a pressure leak somewhere that is resulting in inadequate control pressure to the governor, but I can't be sure yet. What I DO know is that immediately after "refreshing" the governor, the car shifted much better, and after sitting only a day or two the shifting has returned to its original state. This is the same thing that happened after my mechanic messed with it and supposedly cleaned up the governor.

So to start I'm going to pull the governor again and inspect it. If it is sticking/rusty again after being cleaned thoroughly only a couple of days ago, then something is wrong with the fluid getting to the valve. If it doesn't have fluid in/on it, of course it will rust, but it should be getting enough fluid in the right places for rust to be a non-issue.

If, however, the governor is immaculate and moves freely in its bore, then I must look elsewhere. I'm considering in this case pulling the pan again and removing the valve body and perhaps the pressure regulator and disassembling them to check thoroughly for stuck valves, blockages, etc.

If none of these efforts take care of it, I don't know what I'll do yet.
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  #35  
Old 08-21-2006, 04:42 PM
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Default RE: What Model Transmission?

I pulled the valve again today and it did not look rusty. It wasn't moving as freely in the bore as it should, however.

This time I disassembled the valve and cleaned it and polished the valve and bore such that the valve moved freely in the bore when it was totally dry, with no lubrication of any kind. I then lubed it with some tranny fluid and reassembled. The ensuing test drive was very enjoyable: shift points were a hair's breadth from spec and, perhaps more importantly, were consistently very smooth.

This gives me hope for the overall status of the transmission. Clearly, it CAN work very well without major servicing.

The test that I'm holding my breath on is whether this excellent performance will remain the next time I take the car for a drive. I really can't figure out why the valve would start sticking after only a couple days' time of disuse. Clearly fluid is getting to it, or the car wouldn't be able to drive like it did today!

So hopefully I won't have any more problems from it any time soon. I'll post as soon as I know one way or the other.
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  #36  
Old 10-31-2006, 04:56 PM
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Default RE: What Model Transmission?

I've had more time to evaluate this. The past couple of times I've driven my car, the shifting is way off until the transmission warms up, at which point the 1-2 shift is a bit late and the 2-3 shift comes right on the other shift's heels. I've had more than one occasion where the trans slid through second into third in one smooth, but abnormally long, shift.

Every time I've pulled the governor and cleaned it, shifting has improved. Does any one have any idea why the shifting could detriorate from one drive to the next?
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  #37  
Old 10-31-2006, 05:31 PM
58tdactyl 58tdactyl is offline
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Default RE: What Model Transmission?

Perhaps your transmission is full of old cruddy transmission fluid....or build up.....and everytime you drive it loosenes up more and more. Did your car at one point sit for a long time???
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  #38  
Old 11-01-2006, 01:36 AM
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byersmtrco byersmtrco is offline
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Default RE: What Model Transmission?

You need a new transmission
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  #39  
Old 11-01-2006, 12:44 PM
peeeot peeeot is offline
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Default RE: What Model Transmission?

hahahahaaaaaaa, not what I want to hear!! :P

I think the car did sit for a long time. I don't know when or for exactly how long, but the plate that was on it when I bought it expired somewhere around 1994, as I recall....

The engine wasn't assembled when I bought it and was full of sludge and muck and who knows what else. All this to say, it could have been sitting quite a long time.

As for the transmission, when I took the pan off to replace the filter, everything was very clean. It looked like it had been rebuilt not long ago in its service life. There was also some damage to the case, which I mentioned earlier in this thread, methinks.

The fluid in it, which was and still is Dexron 3, was a good red color but there were a few little blob-like deposits in the pan. I don't remember them well enough to describe them better than that. The pan did not have a magnet in it, whatever that may suggest.

After cleaning the governor valve, the car shifts like it's supposed to. After not driving for 2 weeks, next time I drive the shifting is worse.

Why do you say I need a new transmission?
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  #40  
Old 11-01-2006, 09:55 PM
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Default RE: What Model Transmission?

I mean to say, yours just needs to be gone thru. Find a good tranny guy and just have him go thru it. Re seal it. Get an overhaul set with new plates (steel & fiber) Repl the Tq/Converter. MAKE SURE you remove the radiator and have the trans cooler cleaned out. Clean the lines out too and have em boil out the radiator while your there. I'm sure your trans is just gunked up. I'll bet you could do the whole deal for under a grand (Not counting R & R)

What area are you in?

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