The gauges were original and mechanically sound at the first glance, but obviously had to come apart for refreshment. There is no worst then a giggling speedo or a sticking temp gauge in a nice restored classic.
The voltage stabilizer is a delicate thing. It prevents the temp gauge and the fuel gauge to read faulty due to the varying current in the charging system. Although it is a simple design, it work just as well as a modern electronic device.
Normally we get our items plated by a company, but such fine and small items as the gauges or the carburetors, we do here in the workshop.
The speedo gauge internals were badly stucked due to the old grease. We took the mechanics apart as much as possible, but still could not get it cleaned completely, because some parts are riveted and there is no real way for dismantling and reassembling it correctly.
For these cases we have an ultrasonic cleaner. Normally ten to twenty minutes tend to be enough, but the gauge was so badly stuck, it stayed in the tank for 1.5 hours! Now it works fine.
Stickers have to go back after the plating of course.
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