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Mystery parts found inside M50D-R1 transmission.


xuout1

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Finally got my under carriage pressure washed, truck put on the rack and transmission pulled out. When I opened up the trans I discovered the synchro collar for reverse and 5th gear was rounded off and should be a easy fix but what has me worried is the two small pins I found laying on the work bench after I rolled it over. They are .156 in diameter. One is just over 1/2" long and the other just under 1/2". The exploded view doesn't show any needle bearing rollers this size. What are they ?
 

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Transman304

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My credo
If you can’t fix it with a hammer, you have an electrical problem
Those look like shifter lockout pins or detent pins. Did you remove any parts off the shifter cover?
 

xuout1

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Those look like shifter lockout pins or detent pins. Did you remove any parts off the shifter cover?
I did remove the button sensor on the drivers side of the cover that has the long pin under it. Unless those were stacked up behind it.
 

adsm08

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They look like detent pins, possibly from the 5/R assembly.
 

xuout1

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The center shift rods use short fat pins and the 5th/rev use a ball and spring. Ends are slightly rounded on the mystery pins so that rules out roller bearing.
 

adsm08

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I have one am tearing apart once I have the money to rebuild it, I will find them when I do. I will not be able to find this thread by then.
 

xuout1

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I will have it back in the truck in one or two weeks. Will give a update when I do.
 

xuout1

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Location
Sandy Oregon
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1994
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explorer
Transmission
Automatic
Finally got my under carriage pressure washed, truck put on the rack and transmission pulled out. When I opened up the trans I discovered the synchro collar for reverse and 5th gear was rounded off and should be a easy fix but what has me worried is the two small pins I found laying on the work bench after I rolled it over. They are .156 in diameter. One is just over 1/2" long and the other just under 1/2". The exploded view doesn't show any needle bearing rollers this size. What are they ?
Update. Transmission back in with just replacing a gear slip ring and broken synchro dog springs. Trans works great so far and mysterious extra parts are still setting on my work bench.
 

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