Curious about a shake when the elevator goes down

I saw this on a traction unit today. It's not like the usual stuff.

4 comments

4 Comments

That shake in a traction elevator going down often means the guide shoes are worn or rails are loose. Check the car sling bolts for tightness, since vibration loosens them over time. Also, the motor brake might catch unevenly during descent, causing a jerk. Have a technician look at the sheave and rope tensions to rule out imbalance.

jenny_white2120d ago

Wait, loose car sling bolts? That's a new nightmare unlocked.

ross.dakota1mo ago

Hate that shake, and @jakeadams nails the likely causes.

robertperez1mo ago

Interesting take from @jakeadams, but from my experience that shake on descent usually points to rail alignment issues before guide shoe wear. I've found the leveling device can also cause a jerking feel if it's starting to act up.