Re: How to replace shift shaft seal on 727 trans?
[Re: cal_gecko]
#29457
09/02/06 10:46 PM
09/02/06 10:46 PM
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Anonymous
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Anonymous
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R U sure it is this seal and not the small kickdown one ?
You can just put a deep pan on it ...and just lower the fluid level.
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Re: How to replace shift shaft seal on 727 trans?
[Re: cal_gecko]
#29459
09/03/06 01:05 AM
09/03/06 01:05 AM
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Anonymous
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Anonymous
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Can you see if it is leaking on the high or low part of the shaft ?
The lower seal is a complex one. The upper seal is just a simple rubber one.
How you thought about a deep pan?
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Re: How to replace shift shaft seal on 727 trans?
[Re: mrsmallblock]
#29461
09/03/06 01:20 AM
09/03/06 01:20 AM
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Joined: Aug 2003
Posts: 12,589 Sacramento, CA
cal_gecko
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I Live Here
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OP
I Live Here
Joined: Aug 2003
Posts: 12,589
Sacramento, CA
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Quote:
the easiest way is going to be taking the valve body out. remove snap ring and washer to remove and replace the kickdown seal. if you are careful take the kickdown rod out without removing the rooster. then you can polish the shaft because that is what kills that seal, rust and corrosion. the case seal you can knock out from the bottom and use a big c clamp and washer to draw the new seal in. i have done this many times. not too big or a deal.
howard mrsmallblock
what is 'the rooster'? I am not familiar with that term. I guess I'll see if I can get the rubber seal for the kickdown shaft too... I doubt I'll be able to find a parts store that has one in stock though.
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Re: How to replace shift shaft seal on 727 trans?
[Re: cal_gecko]
#29465
09/03/06 01:40 AM
09/03/06 01:40 AM
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Anonymous
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Anonymous
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The deep pan is the plan .... just have the fluid show on the TIP of the stick.
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Re: How to replace shift shaft seal on 727 trans?
[Re: cal_gecko]
#29470
09/03/06 03:18 AM
09/03/06 03:18 AM
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Joined: Nov 2004
Posts: 25,050 Texas
GoodysGotaCuda
5.7L Hemi, 6spd
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5.7L Hemi, 6spd
Joined: Nov 2004
Posts: 25,050
Texas
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Quote:
Thanks, FluffyTwinkie!
No problem, its not all that hard to pull the valve body. It is helpful to have someone around thats done it before if you get in a jam though.
Oh and the fluffytwinkie...im thinkin im due for a new name.
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Re: How to replace shift shaft seal on 727 trans?
[Re: mrsmallblock]
#29472
09/03/06 12:49 PM
09/03/06 12:49 PM
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Joined: Apr 2006
Posts: 374 Mo.
1100HPSmallBlock
enthusiast
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enthusiast
Joined: Apr 2006
Posts: 374
Mo.
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Quote:
the rooser is actually the piece that goes through the case seal and the kickdown shaft goes throught the inside of the rooser. it has a check ball and spring that serves as the detent selector for your gears. mrsmallblock
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Re: How to replace shift shaft seal on 727 trans?
[Re: 1100HPSmallBlock]
#29473
09/03/06 01:42 PM
09/03/06 01:42 PM
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Joined: Sep 2004
Posts: 1,913 Brunswick, Jawgia
Snailpower
Infinitely Fast Snail
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Infinitely Fast Snail
Joined: Sep 2004
Posts: 1,913
Brunswick, Jawgia
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IMO, the deep pan is a band aid for a bad seal on the trans. Fix it right the first time. You can do this seal replacement without pulling the valve body, dropping the pan and if the trans is clean you won't even get your hands dirty (much).
Take the kickdown and selector lever off the trans (both pinch bolts) and take a sharp pick to work the selector shaft seal out of it's hole and up the shaft. It's a press fit, so jab the pick through the top of the old seal and use leverage.
Take the new seal, lube it a little and slide it over the shaft until it sits evenly on the trans case, not cocked. Take a deep socket the same size as the seal and slide it over the shaft to rest on top of the seal. Tap the socket until the top of the seal is flush with the trans case. Re-install selector/kickdown levers.
I have done many this way. The worst I have had to do is un-bolt the trans crossmember to drop the end of the trans down for a little more room to work.
Jeff
70 Coronet- turbocharged 360/518/3.73 SG
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