Vacuum Modulator/diaphram pin

[rednine4]

On my C4/C5 I was looking at the condition of the vacumm modulator and I noticed the little pin just sits in there loosely. It almost seems as if the pin can fall out into the trans pan? Am I just being paranoid or do I need to pull the pan off to see where it really goes?

 

[85_Ranger4x4]

I am not really sure how it works either, mine seemed to be held in by not much more than pure luck.

I got two shifts (three speeds) circling the shop, so I think that is how it is supposed to be though.

BTW, hook the vacuum line up before you put the crossmember in, it is very tight to do it after the fact.

 

[projectnitemare]

Behind that pin is a valve or should be a valve. It is a loose fit, the modulator will hold it in position so it hits the valve.

Matt