Ran into another little problem with the ongoing repairs to my NAA, a working tractor, not a ahow machine. The temperature gauge appears to be original, wasn't working when I bought it several years ago. After some overheating issues caused by a debris-plugged radiator after mowing tall weeds, I figured I should spend a few bucks to get a new gauge. Bought a cheap one on eBay (probably the first mistake), when I tightened the hex-headed bushing into the block,the bulb section was loose, could wiggle it quite a bit, wouldn't hold water. Then I noticed that the original unit had a small brass funnel-shaped bushing at the angled shoulder where the bulb flares out, presumably where it should press against the recess in the head casting to make a water-tight seal. So I installed the little brass bushing, tightened the hex bushing as far as she would go, but the bulb is still loose, not as bad as it was before, but still won't hold water. When I hold up the new unit alongside the old one, the hex bushing and bulb shoulder look to be the same lengths, if anything, the new one looks to be longer from the end of the nex bushing to the bulb shoulder, looks like it should tighten and seal. Thinking of putting a small O-ring between the bulb and the brass bushing to lengthen the assembly.Any ideas?
(By the way, are all the new aftermarket gauges made by the same folks, probably in India? How can you tell if your vendor has a gauge that might be better quality than others? The original label had been cut off the box I received, so no idea who the maker is.)
(By the way, are all the new aftermarket gauges made by the same folks, probably in India? How can you tell if your vendor has a gauge that might be better quality than others? The original label had been cut off the box I received, so no idea who the maker is.)