Re: 727 trans brake
[Re: jkwedge540]
#2319341
06/11/17 11:32 AM
06/11/17 11:32 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Do a quick check of the trans adjustments but it sounds like the brake is the issue.. slow to activate is dirt or a crack in the brake.. pressure could be low
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Re: 727 trans brake
[Re: jkwedge540]
#2319356
06/11/17 12:02 PM
06/11/17 12:02 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Another issue I had was second to third shift . It was slow going into third. Could this be related too each other. I dont think so.. once the shifter is in either second or third/drive the brake is not involved.. only in low/first gear(on MOST brakes.. there are brakes that allow a second gear start)... look at the line pressure
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Re: 727 trans brake
[Re: jkwedge540]
#2319517
06/11/17 07:04 PM
06/11/17 07:04 PM
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Joined: Jan 2003
Posts: 26,005 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 26,005
Rio Linda, CA
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Another issue I had was second to third shift . It was slow going into third. Could this be related too each other. Since 3rd gear is the front clutch and the front clutch is also used for the brake, I'd say it's likely. (Worn seals/rings, leakage)
The INTERNET, the MISinformation superhighway
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Re: 727 trans brake
[Re: jkwedge540]
#2321396
06/15/17 12:48 AM
06/15/17 12:48 AM
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Joined: Dec 2005
Posts: 11,739 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,739
Fulton County, PA
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Front band has nothing to do with the brake, in a 3 speed. Front band applies to get it in to second gear. Releases on the shift to third. A slow to release band will affect the 2-3 shift.
If the results don't match the theory, change the theory.
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Re: 727 trans brake
[Re: jkwedge540]
#2322450
06/17/17 12:48 AM
06/17/17 12:48 AM
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Joined: Mar 2011
Posts: 3,105 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,105
Michigan
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You can try to clean it - take it off and find the bleed orifice and backflush it with brake clean. Doesn't take too much debris to cause a significant leak. I would have hoped there would be a screen on the fluid source side before the fluid got to the solenoid seat. 26 years ain't bad 😀 For a solenoid.
Last edited by Transman; 06/17/17 12:49 AM.
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