c/elevator-mechanics

Had a governor rope jump the sheave in a 20-story building

We were doing a full rope replacement in Chicago and the old governor line slipped during tensioning. I had to re-thread it with the car at the top floor while my partner held the safety, took us an extra three hours. Anyone ever have a governor give them that much trouble on a high-rise?

A talk with my old foreman about elevator door timing

I ran into my old foreman, Mike, at the supply house last week. He asked about a tricky door adjustment I was stuck on for a 90s Otis in the old bank building. He said, 'Stop chasing the book spec and just watch the people for a day.' I spent a whole shift just watching the traffic flow and finally saw the real problem... the dwell time was fine, but the close speed was spooking folks. Anyone else had a job where the book answer was wrong for the actual use?

PSA: I put a new type of grease on a door operator and it totally backfired

So I was working on an old Otis door operator in a building downtown, the kind that's always a bit sticky. Everyone on the crew swears by this heavy lithium grease for everything. I decided to try this newer synthetic stuff I got a sample of, thinking it would handle the heat better. I put it on the drive arm and the guide rollers. Two days later, the super calls me back. The grease had basically turned into a thick paste and seized up the whole mechanism. It took me three hours to clean it all out and redo it with the regular grease. I learned that just because something is newer doesn't mean it's right for every old part. The old grease works because it's simple and doesn't break down the same way. Has anyone else had a bad reaction with a synthetic grease on older units?

Honestly, had to pick between a full governor rebuild or a straight swap on a 15-year-old Otis unit last month. Went with the rebuild. It's been a headache.

Vent: I used to think the old trick for a sticky door operator was just shop talk

Had a 90s Otis unit in a downtown building last month with a door that kept hesitating on close. The usual cleaning and adjustment did nothing. An old timer I used to work with said to check the 24 volt DC at the motor while it's under load, not just at rest. Sure enough, under load it was dropping to 18. Found a corroded splice in the junction box on the car top. Fixed that and the door smoothed right out. Saved me from replacing a motor I didn't need. Anyone else run into voltage drop issues that looked like a mechanical problem first?

Switched to a different brand of roller guide cleaner and the noise difference is huge.

We had a bank of four cars in a 90s office building that all had a high-pitched squeal on the down run. After cleaning the roller guides with our usual stuff for years, I tried 'Trak-Silent' gel last week. The squeal on car three is completely gone after two full cycles. Anyone have a go-to product for stubborn guide rail chatter?

A call to a 1920s apartment building in Boston changed how I check for counterweight sway.

Rant: The old way to check a door lock circuit versus just using a meter

I was on a call for a stuck car in a downtown office building last Tuesday, and the fault code pointed to the door lock. The old head who trained me always said to listen for the relay click and watch the light on the lock box (you know, the one with the little red LED). I spent maybe 20 minutes doing that, crawling around, trying to see if the light was on from a bad angle. My helper finally just handed me his Fluke meter and said 'check for 90 volts.' I did, and it was reading like 12. The problem was a corroded terminal in the junction box three floors up, not the lock itself. That click-and-light method is fine for a quick check, but it totally missed the voltage drop. Now I go straight for the meter. Has anyone else found a 'standard' way of doing things that actually wastes more time than it saves?

Spent 8 hours on a phantom 'door zone' fault in a 90s Otis Gen2

Everyone says to trust the diagnostic codes, but this one was a total red herring. The car kept stopping inches high, flashing a door zone error, but all the sensors and sills were perfect. Turns out a worn sheave was letting the rope slip just enough to mess with the absolute position encoder. Replaced the sheave and the code cleared instantly. Has anyone else had a Gen2 lie to them like that?

Serious question, has anyone else switched from manual to digital tension gauges on their ropes?

We had a job in a 12-story building downtown where we were replacing all the hoist ropes. The foreman brought in a new digital gauge, and I was used to my old manual one. The digital one gave us a reading within 2% every time, no guesswork. My manual gauge was off by almost 10% when we checked it against the shop's calibrator. What digital models are you guys using that hold up on site?

Saw a 1950s Otis elevator still running in an old hotel in St. Louis

The thing still had the original manual folding gate and a mechanical floor selector. It made me think about how much simpler the systems were back then, even if they needed more hands-on care. Anyone still working on these old manual controls regularly?

Saw a weird door gap at the courthouse in Springfield

I was at the old county courthouse in Springfield last week for jury duty. The elevator there had a solid inch gap between the car sill and the landing sill on the third floor. It was a traction unit, maybe from the 70s. Made me wonder if the guide rails are out of spec or if the leveling just drifted over time. Anyone run into a gap that big on a public building job?

Serious question, when did you switch from a manual to a digital multimeter for troubleshooting?

I held onto my old analog Simpson 260 for years, thinking the needle gave a better 'feel' for fluctuating voltages. Then I spent a whole morning last fall tracing a ghost call on a 90s Dover, and a colleague's Fluke 87V showed me a transient spike I never would have caught. Anyone else have a specific job that finally convinced them to make the switch?

Pro tip: a 3-day job in a Chicago high-rise turned into a 2-week nightmare because of a single sheave groove.

The groove was worn just enough to cause a skip we couldn't isolate, and we had to pull the entire assembly. Anyone else ever get fooled by something that subtle?

PSA: Tried a new synthetic rope dressing on a high-rise traction job and it went sideways

I was working on a 30-story building's main hoist ropes last month and used this 'advanced formula' polymer spray instead of my usual wax-based stuff, thinking it would last longer. The ropes started squealing like a stuck pig after just two days, and the building manager called me back in a panic. Has anyone else had a synthetic dressing cause more noise than it prevents, or did I just get a bad batch?

Spent 4 hours on a Friday night chasing a phantom door lock fault in a 20 year old Dover

I used to think the old Otis Gen2 belts were just fine until a job in Portland last month

We swapped out the original belts on a 2010 unit for the newer red stripe ones after a call back for a rough ride. The difference in vibration after 3 weeks was huge, you could feel it just standing in the car. The building manager said tenants stopped complaining about noise. Has anyone else seen a big change like that from just a belt upgrade?

Got a stuck door on a 90s Dover in an old office building. The usual lube and adjust didn't work, so I tried a trick with a zip tie on the vane reader.

Shoutout to my foreman who insisted on checking the governor rope tension first

We had a call for a noisy traction machine at a building on 5th Avenue, and I was ready to dive into the motor bearings. My foreman, Carl, said to always check the governor rope tension before anything else, even if it seems unrelated. Sure enough, the rope was way too loose and slapping against the sheave, making all that racket. Tightened it up and the noise was gone in ten minutes. Anyone else have a simple check that saved them hours on a job?

A building inspector in Charlotte called out my hoistway door gap check

He said my visual check wasn't good enough and I needed to actually measure every one. Now I carry a feeler gauge set on every call. Anyone else get called on that before?

Hit 500 elevator call buttons replaced and it feels weird

So I was cleaning out my work van last Friday, just sorting through old parts bins, and I found a little notebook I used to keep track of jobs. I flipped through it and realized I've swapped out exactly 500 elevator call buttons over the last three years. Five hundred! It's such a random, specific number, and it just hit me how many times I've stood there with my little screwdriver, popping off that plastic plate. The weird part is, I can still remember the first one I ever did on my own, a sticky button in a library that kept getting jammed with pencil eraser bits. It mattered because it made me think about all the tiny, unseen fixes that keep things moving. You never really notice a call button until it's broken, right? Has anyone else ever kept a weird count like that on a simple part?

Got called out to the old Baxter building downtown for a stuck car and found the problem was a 20 year old relay welded shut.

The building manager said it had been acting up for months, but they kept resetting it. When I opened the controller, the relay for the door interlock was completely fused. I had to replace the whole board because the contacts were part of it. Anyone else run into these old Otis boards where a single bad part means a full swap?

Finally got the call back on that tricky Schindler 330A door operator

I keep seeing guys set the closing force way too high on those units, like over 150 Newtons, just to make sure it shuts. That puts crazy stress on the hanger rollers and the track. After adjusting three different ones in the downtown high rise last month to the book spec of 100N, the call backs stopped. Anyone else notice this specific issue with that model?

Can we talk about the new synthetic rope lube from that big supplier?

I put it on a set of 5/8 inch ropes in a downtown office building last month, and it actually made the traction worse after a couple of days. I mean, it was supposed to be an upgrade, but now I'm getting callbacks for jerky starts. Has anyone else had a bad reaction with this stuff on older sheaves?

Pro tip: I always thought a 3/8 impact was fine for hoistway door rollers until a job in Cincinnati proved me wrong.

An old guy I worked with on a hospital retrofit kept telling me to use a 1/2 inch drive for the stubborn ones, saying 'you'll round off the nut and be there all day.' I ignored him for years. Last Tuesday, I was replacing a set of 12 rollers on a 20-year-old Otis unit, and my 3/8 impact just spun on the third one. Switched to my buddy's 1/2 inch, and it zipped every single one off in seconds. Has anyone else found a specific tool that saves way more time than you expected on a common task?