OT - Screw Removal (Volvo Transmission)

Kirk Grau · Oct 25, 2009

I know I have mentioned my dislike for Volvo's here before, but I keep inheriting them from my in-laws. This one is a '98 S70 that they gave to my daughter. Transmission has gone into limp mode a couple of times and come out of it a hour/day later. Pulled codes and it states a malfunctioning shift solenoid. Having more time than money these days decide (after some research) that it looks like I can replace these solenoids myself. Cover over these solenoids is held on with 9 T40 screws, have 6 out and 2 look feasable, but one is corroded enough that the Torx head stripped immediately. I can almost get a needle nose vice-grip onto the screw head, but can't get enough bite to get it loosened at all. Anybody have a good method to get this loose? Don't have a means to heat it and space is pretty tight under there anyway. Would probably destroy some adjacent pieces using that process. Might go buy an "easy-out", but my experience with them is not good. If I raise car a little more than I have so far I think I could get a drill there if I had to. What else can I consider?

Thanks,

Kirk

old · Oct 25, 2009

I have run in to that before and what I did was take an old screw driver flat tip type and grind it down just to the point you have to drive it in with a hammer. Do that does two things locks it in and also the hammering sort of jars it loose.

bill mart · Oct 25, 2009

they make extractors for messed up screw heads,brand name of X-Out comes to mind.Bill M.

tractorsam · Oct 25, 2009

I would shoot for trying to weld a nut to it if you have the gear. It will locally give you some heat which will help, but it shouldn't be enough to destroy anything. If you had enough room I'd also be tempted to try a cold chisel to see if you can get it to turn. Sam

LilFarmer · Oct 25, 2009

If you can get to it with a 3" cut-off wheel, grind a groove in it to use a flat blade screw driver. The grinding also inputs some heat into the screw which will help loosen it.

If that doesn't work, grind the head completely off and pull the pan. There should be enough shank sticking out to get hold of with your vice grips.

Brian Jasper co. Ia · Oct 25, 2009

Seems like Sears has a special set of damaged screw extractors.

teddy52food · Oct 25, 2009

Use a good hard flat punch and hammer on it. Try to get the head deformed so the torx goes in tight. By then it will be loose. I usually do this before trying them & don't strip near as many.

BigMarvfromGa · Oct 25, 2009

what about one of those impact drivers with a torx bit in it ?

Uncle Ernie · Oct 25, 2009

I drive torx bits into corroded sockets all the time and they almost always come out. Clean out the socket with a fine tipped screwdriver or a straight pin as best you can to let the bit go as deep as it can get. Then tap the correct size bit into the socket and bear down on it as you turn. As long as some fool hasn't rounded them out first it will come. Then you resort to grinding a slot. Then grinding off the head. Usually do not have to resort to that unless someone before me screwed up the Torx.

OT - Screw Removal (Volvo Transmission)

Kirk Grau

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old

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bill mart

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tractorsam

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LilFarmer

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Brian Jasper co. Ia

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teddy52food

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BigMarvfromGa

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Uncle Ernie

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