Wireless Set No. 52 Canadian - Project

[David Dunlop]

The two lowermost and challenging sets of hardware to mount the front panel assembly to the Coil Chassis have now been reinstalled. The round head, slotted, machine screws in these two hardware sets are shorter than the remaining, upper four sets. With the Shakeproof washer in place, the screws will only run home about two thirds of the way into their hex head nuts.

Gravity helps get these two hardware sets installed, so I started by resting the chassis assembly on its front panel on a small 4x4 block of wood, padded with an old cloth. It is important doing this and keeping the centre of gravity of the coil assembly squarely over the wood block to avoid it tipping while you are working on it. I oriented the chassis with the bottom facing me and used a pair of small work lamps to fully illuminate the areas I needed to work in.

The first photo shows the small triangular cutouts provided to access these two mounting holes in the brass angle brackets. The Shakeproof washer is already resting around the screw hole. I dropped them in place with a small pair of needle nose pliers.

Before I started all this, I put a small drop of clear nail polish on the end of a wooden candy stick to secure the brass hex nut. The screw was then mounted on an appropriately sized slotted screw driver head and placed up through the hole and through the washer. While holding the screw in place with one hand, I used the other hand to carefully place the hex nut on the tip of the screw and turned the driver head to engage the threads. The hex nut pops free of the wooden stick as soon as the turning resistance is great enough. You can then press down on the open face of the hex nut with the flat tip of the wooden stick until the screw is flush with the front panel. I then placed a drop of red nail polish into the hole of the hex nut to lock it in place. I had found traces of red lacquer in these two hex nuts when I removed them last Spring.

So the two tricky sets of panel mounting hardware on the Coil Assembly have now been reinstalled. Four more sets to go.


David