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Old 09-16-2010, 11:25 PM
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broken th350 vent tube.

installing motor and trans together into chevelle and broke off the little vent tube with the cap on it, 3 questions #1 can i run without it #2 can i glue it if im carefull not to get glue in hole #3 what is the correct way to repair this and can it be done in the car. thanks guys!

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Old 09-17-2010, 07:37 AM
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I have seen transmissions w/the vent broken off run like that for years- but it is always best to replace anything that's broken w/a correct part. The risk is that the broken vent tube will allow dirt and water access to the inside of the trans. So the 'correct' way to repair it is to remove the broken off piece and replace it w/a new vent. But depending on how the vehicle is used, this may not be a huge problem- like if the car is used only during fair weather, and not off road.

To remove the piece left in the case, use a small screw. Thread it into the center of the tube, w/o overtightening it, then pull straight out.

Using glue is a hit and miss affair. For glue to work, it either needs to be able to soften/dissolve the parent material (like model car cement), or the surface needs roughened up so the glue (like epoxy/JB Weld) has something to hold on to- or the joint will be mechanically very weak.

Bottom line (IMHO)- replace it if at all possible. Glue? Maybe, but iffy. Or chance it if the vehicle will not see wet or off road use.
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Old 09-17-2010, 09:05 PM
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In the car , is hard to get at.

A tool of the "easy - out" design for broken bolt removal works well. Thread into the hole of the plastic vent remnant , pull out.
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Old 09-18-2010, 07:03 PM
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cobalt, so if you say" pull straight out" on the plastic tube, does that mean that to re-install it just pushes in? i read that it needs to be done from inside.
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Old 09-18-2010, 07:25 PM
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All that I have seen were installed from outside the case. There are two kinds, a simple downward bending tube, and one w/a cap on it- looks like a diff vent. Or a small plastic mushroom. Just don't eat it.

If you can give it a slight turn as you pull up on it, it may help it to come out easier than a "straight" pull. Just don't overtighten the screw or easy-out when you do it.
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Old 09-18-2010, 08:28 PM
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after the broeken part is removed , the plastic t-350 vent is driven in with light taps from a hammer. it is a press fit.

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Old 09-19-2010, 11:20 PM
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broken vent tube

thanks guys, big help.
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