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71 FMX transmission


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Currently have a 71 FMX transmission being rebuilt with new seals etc.Transmission shop has indicated to me about a seal with expander properties that goes where the shifter linkage enters the case. Apparently it wears and a regular seal will leak. Anyone have any advise on this condition. Trying to locate a seal for this area. 

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Sounds like they want to tell you, that your shifter linkage is worn. Used but already within specs isn't cheap but available. I think it's more easy to exchange the linkage than searching for a different seal.

1041539878_Screenshot_20210619-055649_SamsungInternet.thumb.jpg.b150331306a234863b5bb75aad6bc709.jpg

This is just an example.

1972 Mach 1, 351C-2V, wimbledon white, blue all vinyl luxury

born in Dearborn, grown in the district of San José, spent a lifetime in California, moved to Germany in 2010

Mustang_Mach1_wallpaper_300_150.jpg proud member of clublogozusammen.JPG.59fb4a10d15cfff9ec756235059135b8.JPG

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21 hours ago, My02Edge said:

Currently have a 71 FMX transmission being rebuilt with new seals etc.Transmission shop has indicated to me about a seal with expander properties that goes where the shifter linkage enters the case. Apparently it wears and a regular seal will leak. Anyone have any advise on this condition. Trying to locate a seal for this area. 

Sounds like the shop has a better option on which seal to use...?

because the original seal is available for about $3.00

  part # 072

https://transpartsonline.com/TRANS_PARTS_FILE/tpcat.php?TransPartsOnline=FMX&TransPartsType=FMX

 

 

Screen Shot 2021-06-19 at 6.07.05 PM.png

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This past spring I changed my sale and of ring on my FMX trans for a total of $8 for a new seal and Oring plus trans fluid and filter.  Having never do this before I took detailed notes and pictures.  These instructions can be found in this sites Tech Forum in the General Maintenance and Repairs section.  Look on page 5 for article Changing a Shifter Seal and Oring on FMX Trans.

Not to hard to do.  Worst part is getting the small bullet shaped plunger back in place.  

Good luck!

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Auto spell checked butchered my first sentence. It should say, This past spring I changed my seal and oring.......

Edited by Mac
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