Recently bought an old Hunter G111 alignment machine in perfect working order. Its old but functional. Came with a calibration bar but I have no instructions as to the actual procedure. Would like to be able to do calibration myself rather than call a service rep from Hunter each time. Hunter no longer supports this machine for spare parts but the service rep told me that there is lots of used stuff out there and I didn't pay much for the machine anyway. I have downloaded an operators manual for a H111 machine which is similar but it includes no cal info. I would be interested in any information anyone would have on this machine. If I could get my hands on a service manual for this machine that would be great but I think that only Hunter people would have that.
I'm going to have to look that one up to even see what it is.. I've used a number of the older alignment machines but don't recognize the model. A search shows it's a 90 something machine and seems that there are a lot of them floating around yet. I'd check over on Garage Journal as you might have better luck there. If there is a bar that you use I would imagine that it is to 0 the sensors to each other before you use the machine. Meaning that first you square the sensors up to each other before attaching them to the wheels. If the machine is like others I have used after you attach the machine to the wheel of the vehicle you have to raise the tire off the plate (jack it up) and rotate the tire so that you can adjust for wheel runout. For that you are going to need the manual. After that it's either find the vehicle in the computer's program or use your own specs. Then it is just Caster-Camber and toe in with a bit of king pin inclination thrown in for good measure.
I started TAG with one of those machines, bought a new Pronto in '09, and now also have a used 411 for use at home and off site. If it's the bar I think it is, it is to hold the sensors at zero while the machine is adjusted. I've always just hired it done and have not bothered to watch the guy do it. I'd like to have a couple of those fixtures so I can check my machine now and again. As it is, I double check it with mechanical gauges if I think it's acting up, and before I cry "Wolf" to the repair guy when it's something I did. The winner would likely be to track down a retired Hunter guy, or one that's moved on to another job and see if he'll do it on the side. Maybe post something on the Hunter Facebook page too. Even if Hunter doesn't bite, someone else may have your answer. The heads themselves have the ability to compensate for runout as you set the machine up. I sold my G111 due to the lack of parts, and how often I had to get it serviced. https://www.flickr.com/photos/thealignmentguy/2929422852/in/album-72157603608874815/ Now: https://www.flickr.com/photos/thealignmentguy/14944731737/in/album-72157603608874815/ JMF