The way I handle hydraulic valve adjustments is completely different now

For the first ten years I was in the trade, I would adjust a hydraulic control valve by feel and sound alone. I'd listen for the motor hum and watch the car move, making tiny turns until it seemed smooth. It worked, but it was never perfect. About two years ago, I was working on a 1990s Dover in an office building downtown. The building manager kept getting complaints about a slight jerk at the landing. I spent an hour on my old method with no luck. A guy I work with, who's been doing this for forty years, saw me and said, 'You're still guessing. Get the pressure gauge.' He lent me his digital gauge. Hooking it up showed the pressure was spiking 50 PSI over spec right at the stop. Two precise adjustments later, and it was glass smooth. I bought my own gauge the next week. Has anyone else made a switch to using more data over instinct for these kinds of fixes?

1 comments

1 Comment

diana877h ago

We had a stubborn squeak in a plank floor last year that felt like a guessing game. I kept trying to renail the same board, going by the sound. My buddy brought over a moisture meter on a hunch. Turns out the subfloor had a damp spot you couldn't even see. Once we let that dry out and replaced the board, the squeak was gone for good. Sometimes the tool you don't think you need tells you the real story.

-2