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Old 08-26-2020, 08:11 PM
mr67gp mr67gp is offline
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Default 1957 - Transmission noise/issues after fluid drain & refill

I drained and dropped the pan on the Chieftain renewed the gasket, and refilled with ATF. Now she does not like to up shift out of first and there is an odd rattle/knock at the front upper quadrant of the bell housing.

Car/trans has 34k miles. Only reason for the service was the leaking pan gasket.

What'd I mess up?

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1967 GP HT 428
1967 GP convert 428
1957 Chieftain 4D HT
  #2  
Old 09-16-2020, 01:11 AM
59safaricat 59safaricat is offline
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Did you ever find the solution to this problem?

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Old 09-16-2020, 08:29 PM
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stevep stevep is offline
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You didn't mess anything up. Your torus cover may have broken. It is a common issue in these transmissions.

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Old 09-16-2020, 10:42 PM
59safaricat 59safaricat is offline
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There's an o-ring on the transmission pickup tube for the filter on dual coupling transmissions. If the filter was removed and disturbed this old crusty o-ring, it could have lost its sealing properties causing a fluid starvation issue. Very cheap and simple fix

https://youtu.be/nvLshdrFoWc?t=1579

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Old 09-17-2020, 06:01 PM
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stevep stevep is offline
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If that O ring was damaged, the car would not move.

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Old 09-18-2020, 08:16 PM
59safaricat 59safaricat is offline
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The o-ring could be partially damaged and have enough line pressure to get the car moving but not enough for proper operation. It's worth a try.

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