Fluid Drive on New Yorker 47

[Carl-Gustav]

Hi there!

 

So, I've red a couple of threads here about the Fluid Drive transm but haven't quite found the answer to my questions. Don't hate me for bringing this topic back and if you know these questions already have been answered, just let me know ?

 

Ok, my transmission seems to work fine. I've tried all positions and it shifts like I believe it should do BUT, I can't get the kickdown to work... I measured directly on the carb by pushing the "button" all in and I get a closed sircuite on my multimeter. Any suggestions?

I got to inspect the transm yesterday and found some disturbing things... Look at the pic and tell me what to do ? 

There was a mesh on the right hand top that I missed to shoot but it was really greasy and looked like clogged... Is that why some knocklehead has removed the lid on the side? ??... I guess it's to reduce heat...

There is another lid, smaller, in the front of the transm that was open, hanging on one side on a rivet... impossible to put the rivet on the other side without removing the oil pan. 

 

 

[Carl-Gustav]

Oh, I forgot another question ?

 

I know there is a mechanical function in the transmission that assists going down hills and so... But when I'm in high (4th) and let release the throttle I can hear and feel a reduction of speed even on a flat road... That's how I know I'm in high to... Is this normal?

[wagoneer]

HI @Carl-Gustav

  Kickdown electrically tells the interrupter to cut out the ignition coil momentarily just enough to allow the gear shift . There is a great troubleshooting guide. 

 

 

Recommend reviewing the troubleshooting guide from MTSC -- https://www.mymopar.com/downloads/mtsc/024.pdf

 

and watching the videos -- https://mymopar.com/browse-mtsc-by-model-year-1949/    .  See July and August 1949. 

 

 

The hydraulically controlled transmission uses similar principles standard transmission with solenoids and extra plungers to automatically push the synchronizers between the power gears (1 and 2), drive gears (3 and 4). 

 

 

In 1949, Chrysler MTSC did segments on both types of transmissions. They are really excellent to understand how it works, and why it works, and symptoms of failures, that will give you the right intuition to understand your own failure scenario: https://mymopar.com/browse-mtsc-by-model-year-1949/
  

Definitely watch and read the following and read the corresponding MTSC. That's my first go-to for understanding. Interestingly, the videos have MORE information than the reference books. Shop manual makes a lot more sense then. 

 

 

1. Standard Transmission

https://mymopar.com/mtsc-1949-volume-2-6-transmission-fundamentals/

https://www.mymopar.com/downloads/mtsc/018.pdf

2. Troubleshooting standard Transmission

https://mymopar.com/mtsc-1949-volume-2-7-troubleshooting-in-the-transmission/

https://www.mymopar.com/downloads/mtsc/019.pdf

3. Hydraulically operated Transmission

https://mymopar.com/mtsc-1949-volume-2-11-inside-the-hydraulically-operated-transmission/

https://www.mymopar.com/downloads/mtsc/023.pdf

4. Troubleshooting the Hydraulically operated transmission.

https://mymopar.com/mtsc-1949-volume-2-12-how-to-service-the-hydraulically-operated-transmission/

https://www.mymopar.com/downloads/mtsc/024.pdf

 

[Carl-Gustav]

Thank you for the links but they are for the 49 Fluid Drive...I have a 47 - some difference. The interruptor switch only has one connector on mine and the same is for the solenoid. 

 

So, I think I have to be more specific with my questions: 

The transmission does change gears up an down as it should except when I try the kickdown function...then nothing happens, it stays in fourth (high). I get a signal when measuring on the carb (standing still but pushing the pistong)

 

The other question is about the downhill assistance - when in high I can really feel the engine braking when I reliese the gas pedal...even on a straight flat road. Is it supposed to be so noticeable?!

 

 

[greg g]

Enginebraking should be not much different than a manual shift car in high (1 to 1) gear.

[kencombs]

23 hours ago, greg g said:

Enginebraking should be not much different than a manual shift car in high (1 to 1) gear.

And, with an engine in good condition, it will be quite noticeable. 

[greg g]

And you sure you are in high range?  Engine compression breaking in low range would be akin to downshifting a manual into second in anticipation of a sharp turn or coming to a stop sign.

[Carl-Gustav]

Yepp, I'm sure that I'm in high - never use low ? So third, shifts nicely to fourth (high) then close to stop down to third... But sometimes, when turning and going uphill I would like him to go to third but it stays in high and if I try the kickdown, nothing happens ?... 

[Dodgeb4ya]

Read the above material.

Then clean the governor contacts with electric contact cleaner.

They are probably oily.