Home Forums General Discussion Technical Questions Tac 32

I have a tac 32 hydro that is constantly releveling. the seals on the jack are good...don't know where to go from here any suggestions? The unit is not even 2 years old

Did you do a standing test ?

Is manual lowering tight?

If it has telescopic jacks, can you see the upper or middle plunger slowly collapsing into the lower plunger while the elevator should be at rest?

Go to lindenelevator.com and watch video on I2 leak downs

2nd that, their videos are excellent. With an I2, my money would be on the lowering or check valve seats. These valves are super easy to pull apart and inspect but not much you can do if the seat is damaged. Then even if there isn’t anything visible, something may not be machined true. In some really old I2 manuals they talk about lapping these seats by hand on site but I’ve never gone that far. We typically just replace the valve if one of the piston seats are suspected.

Just had one that had a leaky muffler in the tank. After muffler replacement, all is well. cap off between the muffler and the valve. If it still leaks, it''s the muffler. Assuming you have done shutdown test.

The up leveling strainer, if not seated properly, will cause this.

THE releveling is in first floor ? if yes maybe you need adjust low pressure adjustment

how do you know the seals are good? is it teloscopic jacks? or single stage?

also do this


power off with car level at floor
wait 10min and see how far the car drifts down (record this measurment)
Restore power level up car
repeate but this time hit the shut off valve in the motor room
wait 10 min

this will tell you if its leaking through the valve or the piston

Hes right, but be mindful also of oil contraction/expansion from temperature. if the cars been running alot and the oil is nice and hot the contraction as it cools will make it look like it's leaking down, even if it's not actually leaking.