broke three star/torx bits - Mercedes-Benz Forum

 
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post #1 of 5 (permalink) Old 09-22-2015, 05:50 PM Thread Starter
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broke three star/torx bits

I'm trying to change my transmission gasket I think the front was over tighten before I bought it because of a leak in the gasket.

I have a set of cheap great neck bits they twisted.

Bought 2 sets of bits from harbor freight each T30 bit from each kit busted in half.

Who has the best torx bits that I can pick up from a store for this job anyone know.


Thanks
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post #2 of 5 (permalink) Old 09-22-2015, 07:16 PM
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Snap-On has the best, but a set will cost almost $150.

Harbor Freight is total junk. I will even waste the gas to drive to one of their stores.
Sears and Sears Hardware stores have a nice set of Torx and allens with a ratchet for about $50 on sale.
When My tools were stolen on Easter I used that set Sears sells with no problems. It is on sale again for $49.99 which is half price.

Sears.com
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post #3 of 5 (permalink) Old 09-22-2015, 09:05 PM Thread Starter
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Some of the harbor freight stuff is okay socket's Ive bought have worked fine along with wrench's. However the torx bits on over tighten bolts are bad. Ive done some research and found a thread here Best Torx bits? - The Garage Journal Board very interesting it seems that even the top of the line snap on torx will break over time. I have ordered one T30 heavy duty from snap on for 28$ shipped. I'm going to pick up a set from craftsman and probably torch the two bolts in question so I don't snap them as well. I will update tomorrow with my progress.
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post #4 of 5 (permalink) Old 09-23-2015, 05:33 PM Thread Starter
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Horrible time today the trouble bolt has been a "B". I bought a craftsman T30 bit from sears heated the bolt up just to have the bit spin the threads inside the head of the bolt and twist the bit.

Now I'm contemplating taking it to AAMCO for them to get it out or loosen and replace for 100$ give or take. I called a independent Mercedes mechanic and he didn't want to deal with the trouble bolt at all.

I have tightened up the other bolts for now and put the exact amount of fluid in that I took out of the pan. This is my daily with no backup right now so it has to get me around for now.
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post #5 of 5 (permalink) Old 09-24-2015, 02:35 AM
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The bolt insert appears not to be T-30 anymore, and you can't really blame mechanics for not wanting to deal with the stubborn bolt at this point.
The craftsman bit you tried to use is likely made in China. Taiwan is a step up imo, as many top US brands contract (outsource) there.
There are bolt out kits available, that can be used with an impact driver (make sure its set to turn left), or an air gun.
Neiko 01138B 1/2 drive CroMo set used with a 26" breaker bar has yet to disappoint.
At apx $40 (set), I wouldn't be able to buy one same spec US made bit.
To avoid the edges to chip, it helps to clean the insert of debris to have the bit properly seated .
Hope this helps.
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