c/elevator-mechanics

Just realized I was overcomplicating door hanger adjustments

Talked to an old timer at the supply house last Thursday. He said I was spending too much time messing with the gibs and should focus on the roller alignment first. Tried it on a stuck door at a 12-story office building and it slid perfect after 5 minutes. Now I feel dumb for all those extra hours. Anyone else learn a simple fix that made you rethink your whole approach?

The day a seized bearing nearly took out my thumb in a hospital basement

I was working on an Otis elevator in the basement at St. Mary's Hospital in Portland last month. The main drive bearing seized up and the whole motor started shaking like crazy before I could hit the emergency stop. I ended up having to cut that old bearing off with a grinder because it was welded on from the heat. Has anyone else dealt with a bearing that locks up that bad on an older unit?

Had a talk with an old timer at the union hall yesterday

I was waiting for a meeting and got to chatting with a guy who's been in the trade since the 70s. He told me he never uses a laser level for guide rail work, just a good old plumb bob and his own eyes. Said lasers make people lazy and they miss the small shifts that happen during installation. That stuck with me because I've been relying on my laser for years and I never really thought about what I might be missing. Has anyone else gone back to older methods and found they work better?

Controller board failure took out a whole building yesterday

Had an Otis controller board just die on me mid-cycle yesterday at a 12-story office tower downtown. No warning, no error codes, nothing. The car stopped between floors with a guy from accounting stuck for 45 minutes before I could get it on manual. Turned out to be a capacitor that looked fine but was totally fried on the inside. Anyone else seeing more of these sudden board failures on older units?

Spent 3 years greasing guide rails wrong until a old timer set me straight

I always packed the grease thick on the rail face thinking more was better. This 30 year veteran at a job in Des Moines pulled me aside and showed me a thin film is all you need, the excess just gets slung everywhere. Has anyone else been doing it wrong for years without knowing?

Overheard a building manager say hydraulic elevators are safer than traction, made me wonder if he's just old school or if there's real truth to it

I was working on a 10-floor office tower in Minneapolis last Thursday and the guy running the building swore hydraulic systems are less likely to fail in a power outage, but I've seen traction systems with backup batteries handle blackouts fine so which side do you guys lean on for reliability in older buildings?

Saw a hydraulic elevator from 1950 still running in a courthouse downtown

Shoutout to the building super who showed me my level was junk

Been riding elevators in Chicago for about 5 years now. I always adjusted the door rollers by eye and feel, figured close enough was good enough. Last month this old super grabs my level off the cart and goes 'you using this thing?' Turns out the bubble was off by almost a quarter inch. Spent 10 bucks on a new one at Home Depot and my door close times are perfect now. Any of you guys check your levels with a straight edge or just trust the bubble?

Had a talk with an old building super that made me rethink my whole approach

I was swapping out a controller in a 70s building downtown last Tuesday, and the building super came up to chat while I was working. He pointed out how I was tracing wires back to the main panel one at a time, and he asked why I didn't just label everything as I pulled it. I told him that's how I always did it, and he just shook his head and said, "You're wasting half your day on steps you could skip." He showed me his method where he tags each wire with a little flag of tape before even disconnecting anything. It hit different because he wasn't being a know-it-all, he was just trying to save me time. I tried it on the next three floors and cut my time by about 40 minutes per controller. Has anyone else had an older guy in the building show you something that made you feel like you've been doing it backwards?

Never used shielded stranded wire for elevator call stations until a retrofit in Chicago last month

Spent 10 years running solid core because it was cheaper and easier to pull, but after swapping to shielded stranded on that job the signal noise issues I'd been fighting for years on long runs just vanished, has anyone else had that experience?

Hit 500 rescues in a single shift and it rattled me

Had a job at a 12 story office building downtown last Tuesday where the controller went haywire. We were pulling people out of stalled cars one after another, no break. 500 rescues in 8 hours, that's more than I've done in the last 3 years combined. The call volume from the lobby was insane because people were trapped on every floor. Has anyone else dealt with a controller failure that just cascaded like that?

Coated wire rope vs bare for a job in Seattle last month

I had to pick between coated and bare wire rope for a traction elevator retrofit we did up in Seattle last month. The building was right on the water, so humidity was a real concern and the crew foreman swore by coated for corrosion resistance. I ended up going with bare because it's easier to inspect for broken strands and the sheave grooves were already worn in from the old bare rope. After three weeks of operation, I'm second guessing myself a bit because I already spotted some surface rust starting near the hitch points. Has anyone else dealt with this coastal corrosion thing and found a good middle ground?

The day I found out they don't use relay logic anymore

I walked into a modern elevator machine room last month for the first time in maybe 8 years. Back when I started in 2008, everything was relays, contactors, and I could trace a circuit with my eyes closed. First thing I saw was a VFD and a microcontroller board with no visible moving parts. The old timers used to say you could hear when a relay was about to fail by the sound it made. Now it's all quiet and you need a laptop to diagnose anything. Has anyone else had that moment where you feel like you learned the wrong trade?

Found a trick for sticky guide rails on old Otis elevators

Had a job last month in a 1970s building downtown where the car was jerky as hell on every floor. Stuck around for 2 hours trying different greases and nothing worked. Then I remembered an old trick from a mechanic I met in Chicago - put a little transmission fluid on the rail shoes before you lube the rails. Smoothed right out and the customer called me 2 weeks later saying it still rides perfect. Anyone else ever try something like that on sticky rails?

Seasoned mechanic told me to oil my guide rails monthly

Been running maintenance on a 12-stop Otis in a Chicago office tower and a 25-year vet caught me wiping down the rails dry. He said I was grinding metal dust into the surface and handed me a can of 30-weight non-detergent oil. Has anyone else had a senior tech call them out on a basic task that changed their whole approach?

Hot take: I stopped using factory recommended door oil on my Otis elevators

I know everyone swears by the OEM stuff for door operator rails, but after 8 years I switched to plain 30 weight motor oil on a hunch. My boss thought I was nuts when he saw me pouring it in at a job in downtown Austin last spring. Well, six months later and those sticky doors are still sliding smoother than any of the units we serviced with the expensive stuff. I had less buildup on the shoes and no weird gelling in the cold weather we got this January. It saved my company about $40 a month per route on supplies alone. Has anyone else tried a non-standard lube and gotten better results?

Just learned how much elevator door interlocks vary between older and newer models

I was digging through some old service manuals last night and found out that the original Otis interlocks from the 60s had way fewer safeties than I realized. Like they basically just had a basic mechanical latch and that was it for preventing the car from moving with doors open. Now we have all these electronic monitoring systems and redundant contacts. Saw a statistic that said modern interlocks have cut door related accidents by something like 80 percent since the 80s. Blew my mind because I always thought the older stuff was built tougher but the safety gap is huge. Has anyone else noticed a big difference swapping out old interlocks on modernizations?

Controller board fried after a power surge at a condo tower downtown

Last Tuesday a lightning strike took out the controller on a 12-stop Otis elevator in a 15-story building on 3rd Ave. I spent the whole afternoon tracking down a blown capacitor and a fried relay on the logic board. Had to order a replacement board from a supplier in Chicago, which took two days to arrive. Anyone else keep spare boards on the truck for emergencies like this?

TIL elevator cables are way bigger than I thought

Was replacing some governor cables on an Otis Gen2 last week. Looked up the spec sheet - that 3/8 inch cable handles like 23,000 pounds of tension. Blew my mind. Never really stopped to think how much force those things take every single day. Any of you guys ever seen one snap from wear?

Shoutout to the tech who told me to check the brake resistor first

Took me 3 hours on a Schindler 3300 in Denver last Wednesday because I was sure it was a drive fault... ended up being a simple burned out resistor I overlooked. Why do we always assume it's the complex stuff when the simple parts fail first?

Dropped $300 on a new door gauge and it's collecting dust

Bought a fancy digital door gauge from a supplier in Chicago, thought it would save me time on leveling. But my old analog one from 15 years ago is just faster for me to read on the job. Anyone else stick with older tools because muscle memory beats new features?

That cheap pulley I bought off Amazon cost me double in the end

I needed a new sheave for a freight elevator last month and figured I'd save $50 by going with a no-name brand off Amazon instead of the usual supplier. It was $65 delivered and looked fine out of the box. Got it installed, ran the car up and down maybe 20 times, and the thing started wobbling like crazy. Had to pull order a proper one from the local supply house for $120 and eat a whole afternoon of labor replacing it again. Anyone else ever get burned by going the cheap route on a critical part?

Had a tech argue with me for 10 minutes that the door lock contacts don't need cleaning

We were in a 30 year old Otis in downtown Austin and he insisted the intermittent door lock light was a board issue. Finally pulled out my pocket knife and scraped a layer of corrosion off the contacts, and it worked perfectly after that. Any of you guys keep a contact cleaning routine, or just swap parts until it behaves?

I finally tried the 'wrong' way to set up a governor rope on a 2:1 machine

Everyone says you gotta run the rope dead straight across the sheave, no exceptions. But on a tight MRL install at a 12-story building in Austin last month, I angled the rope slightly to clear a beam and it ran smooth for 30 cycles. Has anyone else bent the rules on governor rope routing and gotten away with it?

Hot take: Should we still be greaging guide rails by hand or are the automatic oilers the way to go?

I got into it with a guy from Otis last month at a job in downtown Chicago. He swore the old hand method gives you better control, but I've been using a Pulse automated oiler for 3 years now and haven't had a callback for dry guides since. My argument is the machine doesn't miss a spot, but he claims it wastes oil and can't adjust for wear. What's your shop's take on this debate?