After Installation 4 Post Lift Frequently Asked Questions (F.A.Q.)



Yes, but the extra hydraulic hose will act like a reservoir which may require more hydraulic oil to be added to the system. Ask your salesperson about remote mounting your power unit.

When your four post lift is "set on its locks", all the hydraulic pressure is removed from the system. Therefore, a car may be stored for an indefinite period of time on a four post lift.

Yes, the runway that does NOT have the hydraulic cylinder mounted underneath can be moved on the crossbar. This is a rather time consuming task and the effort is normally not required to change the runway positions. The factory position of most of our 4-post lifts will support a ¾ pick-up down to a TR-3. Many of our customers who want to use their 4-post lift for lifting their UTV, golf cart or riding mower simply drive their short wheel base vehicles across the runways (east to west) rather than down the length of the runway (north to south).

Yes...but very minimal! Please refer to your owner's manual.

The hydraulic system may have "air" in the system and the system needs to be purged.

If your lift has a "direct drive" cylinder, raise the carriage about one foot. Do not set the lift on its locks. Locate the allen screw on the top of each column. Open (just a little) ONE allen screw until you feel a small amount of air AND fluid flowing; tighten the screw. Lower the lift and then repeat the procedure for the other cylinder. Repeat if necessary.



For other lifts (with different cylinder configurations); raise and lower the lift a few times (with no weight) and hold the dump valve for a few seconds when in lowered position. You can feel the air flowing through the vent hole in the reservoir cap. The hydraulic system is being "bled".

A: A noise coming from the lift while it is traveling up or down may be caused by a variety of reasons. A certain amount of sound is normal. However, certain sounds are indications that some adjustments may be necessary.



The columns need to be perfectly aligned (and level side to side) to ensure that the carriages are not contacting the inside of the column at some irregular angle that may create a vibrating sound. This can be caused by improper installation.



The seals inside our cylinders are made to "fit" as tight as possible. On some lifts, there is a "break in period" that is needed to "soften" the seals inside the cylinder. The "stiffer" seals may vibrate or rub against the inside of the cylinder wall until the seal becomes more pliable after using the lift several times. We recommend the addition of four ounces of Caterpillar Hydraulic Oil additive #1U-9891 into the power unit hydraulic oil reservoir to help "speed up" the break in period. This Caterpillar hydraulic oil additive will soften the seals just enough to eliminate the noise, but will allow the seals to maintain their integrity to operate effectively.



There may be other factors that would produce some slight noise when operating the lift.

The lift experts at Greg Smith Equipment can provide you with many solutions to eliminate much of the noise. Of course, we cannot come to your location to perform these simple procedures, but we figure that if you were competent enough to install the lift, then performing some small noise reduction tasks should be very easy.

A 4-post lift should only be moved when it is unloaded. Although the lift will roll very easily on a concrete surface, we recommend that two people are involved when moving the lift.

Only if you leave your lift at ground height for long periods of time. The easiest way to avoid rust is to fully raise and lower your lift at least once every two weeks. If you know you won't be using your lift for an extended amount of time, make sure to store it at its highest setting. The science behind this can be found here: How Does Hydraulic Cylinder Rust Form And How Can It Be Prevented?