Folks, in our repair shops, the two post car lift is our right-hand man. But after prolonged use, it's bound to develop some minor issues. Today, I want to share some typical problems I've encountered over the years and their temporary solutions, hoping to save you some trouble.
First, Weak or Unsynchronized Lifting. This is the most headache-inducing problem. Sometimes one post rises first while the other lags, making the car lift unevenly, which is a scary sight. This is likely due to air in the hydraulic system, or uneven tension and severe wear of the synchronization cables or chains. If this happens, don't force it—stop immediately. First, check and bleed the air from the hydraulic system. Then, carefully inspect the tension of both steel cables or chains to ensure they are even and look for any broken strands or fraying.
Second, Malfunctioning Safety Lock System. We all know that after the lift reaches a position, there should be a "click" sound, indicating the mechanical safety lock is engaged. But if sometimes it doesn't lock, or won't release when it's time to lower, that's dangerous! This is usually caused by worn safety lock pawls or lack of lubrication in the linkage mechanism, causing it to jam. In daily operations, make it a habit to "listen for the sound." Never let go until you hear that locking click. Regularly lubricate these moving joints to keep them flexible.
Third, Oil Leaks and Unusual Noises. Oil stains on the floor or columns indicate aging seals that need timely replacement, otherwise pressure won't build up. Squeaking or grinding noises during operation often mean bearings or pulleys are lacking lubrication or are worn out. Don't ignore these small issues; address them as soon as you find them. A small hole not mended will become a big one.
In summary, if equipment has a problem, the first step is to stop and inspect it. Safety always comes first
