1959 Hydramatic, silly behavior, need advice
#1
1959 Hydramatic, silly behavior, need advice
Hey folks,
recently I figured, that the Hydramatic in my 1959 olds dynamic 88 shows a crazy behavior.
Since we have winter here and I can't drive it, I start the motor every once in a while, just to get the oil everywhere and enjoy the sound.... what I noticed is this:
While the car is in P or N, it should not move at all. Well... giving it a little bit of throttle, the car moves an inch or a little more or less. It always moves a little bit forward and if I release the throttle, it moves back to where it sat before.
When I press the brake, I can still feel, it wants to move, its like I would have a manual with a not good working clutch...
I need some input, if this is normal and I can just forget it or is there an issue to look for?
As far as I know, the previos owner rebuilded the motor and trans a couple thousand miles ago, in case of the motor, its for sure true, in case of the trans.... I dont know.
So this Trans got a clutch, right?
The oil level is good, my next step would be changing the transmission oil and filter but maybe you guys have another idea, where to take a deeper look into it.
Thanks
Markus
recently I figured, that the Hydramatic in my 1959 olds dynamic 88 shows a crazy behavior.
Since we have winter here and I can't drive it, I start the motor every once in a while, just to get the oil everywhere and enjoy the sound.... what I noticed is this:
While the car is in P or N, it should not move at all. Well... giving it a little bit of throttle, the car moves an inch or a little more or less. It always moves a little bit forward and if I release the throttle, it moves back to where it sat before.
When I press the brake, I can still feel, it wants to move, its like I would have a manual with a not good working clutch...
I need some input, if this is normal and I can just forget it or is there an issue to look for?
As far as I know, the previos owner rebuilded the motor and trans a couple thousand miles ago, in case of the motor, its for sure true, in case of the trans.... I dont know.
So this Trans got a clutch, right?
The oil level is good, my next step would be changing the transmission oil and filter but maybe you guys have another idea, where to take a deeper look into it.
Thanks
Markus
#2
My 55 will do the same thing and Of course there is nothing common with those two transmissions. I think it just the nature of the beast. There is probably a technical reason that would explain it but as far as I can tell it doesn't cause any issues and it falls into the not to worry classification... Tedd
#3
It has several clutches , in fact . But they aren't like the single disc "dry" clutch of a manual trans .
They are multiple disc "wet" clutches , that run in oil .
The clutch discs either are connected to the power or load . And they are stacked alternately . To engage the clutch a hydraulically actuated piston pushes the stack together .
What's happening is that when the engine is started , especially in cold weather , the clutches will "drag" because of the cold , heavy , oil .
As Tedd said "not to worry . "
If the transmission fluid is a nice red color , then it's OK .
They are multiple disc "wet" clutches , that run in oil .
The clutch discs either are connected to the power or load . And they are stacked alternately . To engage the clutch a hydraulically actuated piston pushes the stack together .
What's happening is that when the engine is started , especially in cold weather , the clutches will "drag" because of the cold , heavy , oil .
As Tedd said "not to worry . "
If the transmission fluid is a nice red color , then it's OK .
Last edited by Charlie Jones; December 9th, 2017 at 06:16 PM.
#4
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