Our most important concern is our exposed limit switches (rocker and plunger-style) which tend to accumulate grime from spray lubricants, road surface dirt, and winter road salting. We are in a freshwater environment, but exposed parts do take a beating.
We are also looking for a lubricant to help with our safety tail lock pads that tend to flash rust from damp and cold environment. The main arm and pad are pushed into place by hydraulic arms. Our issue is the base pad of the bridge structure rubbing against the tail lock pad.
Third issue we run into is extreme cold operations on our exposed bridge gear & rack systems on a 1936 double leaf steel bascule bridge. In normal weather we use MobileTech lubricant, however in winter we have to mix it with another lubricant to make it adhere to the gears or it will flake off. Not exactly something we like to mix up.
We have some photos of the limit switches and tail locks if you would like to see some of our systems.
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