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Old 04-05-2014, 10:42 PM   #10
cwilkie
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Join Date: Sep 2001
Location: Belcourt ,ND, USA
Posts: 750
Re: TH400 gasket seal.

Now that is a little nicer out i decided to try and tackle this leaking transmission. Upon closer inspection i noticed the fluid looks like it was coming out on the speed gear housing. I took the housong out of the transmission and put in a new o-ring as well as a speed gear seal. That seamed to stop it but over night the area around the seal was good except i could see some fluid coming from the cable itself.

Is there supposed to be a gasket or seal on the speedo cable becore it is screwed into the transmission? I will have a picture or two of this tomorrow.
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1968 Chevrolet Stepside
BB 396 w/TH400

1972 Chevrolet 3/4 Ton 4x4
BB 496 w/TH400
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