There's nothing that feels more 'hands-on' or working class than a job which is essentially fixing things when they break, and installing them for the first time. People who work in elevator installation and repair workers are very similar to car mechanics; they're just working with a different type of machinery. Don't feel bad for them if you see them laboring away at the bottom of an elevator shaft, covered in oil - they're being paid very well for it.
To get into the trade you'll probably need to undertake an apprenticeship with an experienced worker, and more than likely a degree in engineering on top of that, but when you've obtained both those things you should start your new profession earning $73,000 a year. The top 10% earn more than $100,000. Do be prepared to be 'on call' 24/7 for when elevators break down, though.