Here’s a few pics of the next stages.
Then out with Sealey’s finest torque wrench. I mark them as I torque them so I don’t forget.
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Thats an old school aircraft engine assemblers trait
I remember doing that on 500 studs on which i had to pull test, for a project some years ago.
The lead engineer, a young lad, keen but green, dropped the paperwork pack on my desk for sign off, was quite surprised when i rejected his torque testing of the studs
I asked how he had conducted the test, as i expected, it was "i put a torque wrench on the studs and torqued them to the specified torque"
What he'd failed to spot by not reading the fixing method of the studs, was that they were fixed using a process called stud welding .
Basically you put the stud into a chuck and apply a current through the main part and the stud, and similar to spot welding it fuses the stud to the base material
But to check the strength of the weld, the requirement was that you apply a linear force, ie pull the stud, not a rotational force,
I got some additional parts made so we could recheck all 500 studs correctly,
The lad asked "why are you marking the studs, they passed"
I explained , with 500 studs to check, marking them confirms i've checked each one, otherwise you have to go back to the beginning if you miss one, and if you have one that fails, it's easier to spot
luckily they all passed