Popular Post Licensed to kill Posted November 7, 2023 Popular Post Share Posted November 7, 2023 ...with making air tank brackets and doing surgery on the cab so decided to "take a break" from the grunt work and go through my box of gauges to pick out the ones I intend to use. There was a tach from one of the trucks with the needle broke off (how does that even happen???). So decided to would be a good candidate for an attempt at disassembly, cleaning and zeroing the engine hours. Didn't want to risk screwing up my good gauges. It went pretty well so I made a jig to hold the speedo/tach and decided to do my "good" speedo. I am pleased with the outcome, especially when I don't really know what I am doing. Of course this whole project is just "winging it", learn as I go sort of thing. The practice gauge. The "good" gauge 5 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73512-got-bored-yesterday/ Share on other sites More sharing options...
h67st Posted November 7, 2023 Share Posted November 7, 2023 Great work! If that truck had a million miles on it, you can imagine the vibration that needle experienced. I've seen a lot of them broken off. Quote Link to comment https://www.bigmacktrucks.com/topic/73512-got-bored-yesterday/#findComment-541578 Share on other sites More sharing options...
mechohaulic Posted November 7, 2023 Share Posted November 7, 2023 the learn as you go mind set is what makes a good mechanic . books can teach ; doing has a better result (sometimes) .. with chances of remembering . 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73512-got-bored-yesterday/#findComment-541583 Share on other sites More sharing options...
Freightrain Posted November 7, 2023 Share Posted November 7, 2023 That tach likely got a tight spot and tried spinning the needle around at a high rate of speed. Thus it hit the pin and broke the needle off. Very nice work on the rebuild in that speedo. There is a technic to getting the bezel off and not destroying it. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/73512-got-bored-yesterday/#findComment-541591 Share on other sites More sharing options...
mowerman Posted November 13, 2023 Share Posted November 13, 2023 I did not even know you could get that ring off all this time I thought a gauge shop just cut them off and then pressed on a new one Quote Link to comment https://www.bigmacktrucks.com/topic/73512-got-bored-yesterday/#findComment-541894 Share on other sites More sharing options...
Freightrain Posted November 13, 2023 Share Posted November 13, 2023 Ol Rob told me about how he used to do them. I tried on one junk gauge and gave up. Guess I was doing it wrong?? Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/73512-got-bored-yesterday/#findComment-541933 Share on other sites More sharing options...
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