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Old May 10th, 2011, 08:32 AM   #1
jenndiggity
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What size drive head do I need?

Doing my own oil change, need to know what size drive head I need for the torque wrench?
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Old May 10th, 2011, 08:37 AM   #2
austexjg
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17mm
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Old May 10th, 2011, 08:45 AM   #3
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Maybe I'm asking wrong question? They come in 1/4, 1/2 and 3/4 inch.
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Old May 10th, 2011, 08:57 AM   #4
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17mm is metric, everything on the bike is metric Don't ever use something that isn't the exact size or you'll end up stripping it
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Old May 10th, 2011, 09:00 AM   #5
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It doesn't matter which size.
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Old May 10th, 2011, 09:01 AM   #6
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It doesn't matter which size.
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Old May 10th, 2011, 09:03 AM   #7
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You can use either, most use a 1/2" - better?
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Old May 10th, 2011, 09:05 AM   #8
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I'll bring a 17mm when we do the oil change
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Old May 10th, 2011, 09:15 AM   #9
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Originally Posted by jenndiggity View Post
Doing my own oil change, need to know what size drive head I need for the torque wrench?
I think I might understand what you are asking.

The oil drain bolt requires a torque of 19.6 NM. I don't think I've ever seen an 1/2" drive torque wrench that accurately measures that low of a torque. 1/4" drive torque wrenches cannot go that high. 3/8" drive is what you want. However you can still use a 1/2" drive socket with a 3/8" drive torque wrench if you use an adapter.

Last futzed with by dino74; May 10th, 2011 at 10:15 AM. Reason: grammar
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Old May 10th, 2011, 09:23 AM   #10
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Jennifer,

Are you talking about this part?


Or this part?
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Old May 10th, 2011, 09:26 AM   #11
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Old May 10th, 2011, 09:55 AM   #12
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Your right - 3/8" is the best option.
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Old May 10th, 2011, 10:04 AM   #13
jenndiggity
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Kevin the first picture; the size of the head.
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Old May 10th, 2011, 10:13 AM   #14
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One question about torque wrenches:

Do 12 inch pounds = 1 foot pound? I'm just curious if it converts, because I bought a torque wrench that goes from 120 inch pounds to 960 inch pounds. I'm assuming this will work.
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Old May 10th, 2011, 10:17 AM   #15
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One question about torque wrenches:

Do 12 inch pounds = 1 foot pound?
Yes

Jenn, you're lookin for like 172 inch pounds (172 in lbs). Most likely you're gonna wanna get a 3/8" drive torque wrench and then a 3/8" drive 17mm socket.
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Old May 10th, 2011, 11:03 AM   #16
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I agree, go with the 3/8ths.

One more thing I'd like to add, and if you know this already I apologize, but for anyone who doesn't; don't EVER use your torque wrench to loosen a nut or bolt. I have had several co-workers do this and completely wreck the torque wrench. Basically, you can damage the internal mechanism and from then on you think you are torquing to 19.6 Nm but in reality it is less than that.
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