Rossgo wrote:kiwikrasher wrote:Torque wrenches should ideally be used in their middle third range Rossgo, so don’t get too worried about what’s happening at the extremes. It’s not designed to be used at its absolute highest or lowest value. As you say, it reads zero on the dial indicator at greater values so if that’s the same through most the range there’s no problem at all.
Also don’t leave it set above it’s lowest reading (the green arrow) when not in use. It’s good practice to leave them unloaded.
So glad of you guys here, proper techs doing this sort of stuff everyday using pro tools. Thankyou. I will defo listen to you kiwi. Never used a Torque Wrench before to be honest, I tend to over tighten loads of stuff....then realise and loosen it off a tad. Actually got told off at work after a mechanical change over a while back....the lad who had to change it back couldn't undo the bolts...Im pretty sure I have done that on my bikes in the past but this will go on no longer for I have invested in the propee tool!
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Another couple of good tips then if you haven’t used torque wrenches before is
1. When you get the click to indicate the torque has been made when doing it up, release and apply the torque again to get the click. Then do it again. So for every fastener you do up you want to get 3 clicks. Especially important with crush washers and spring washers.
2. Never ever fecking use it to undo fasteners!!!
3. When doing up engine covers or anything else that has multiple fasteners holding something down flat (engine head bolts for example) do the fasteners up in a Criss cross pattern so it goes down evenly till finger tight. Then set 1/3 the torque value and repeat the same pattern. Then 2/3 torque and repeat, then final torque in same pattern. Then finally go around in a circular pattern and torque check all fasteners. When doing this system the only time you need to do the ‘3 clicks’ is on the final full torque criss cross pattern. Then after a heat cycle (if applicable) re-check torques again.
Might all be an over kill on a motor bike in some cases but it’s best practice (Aeronautical tech training) and what I still do as a matter of habit.
Hope all that makes sense.
I know how you like your YouTube so here’s a few good clips.
[video]
https://youtu.be/elobo-TnGwA[/video]
This is on squencing on flanges but same principle I mentioned
[video]
https://youtu.be/QXYpEi5_Pp0[/video]