How to remove a rusted nut?

If you leave your four-post or scissor lift in the downward direction for an extended length of time, rust can build up in the Hydraulic Cylinder. What causes rust, and what can be done to prevent it?

Step 1:

Oil, grease, and grime should be removed from the cylinder in the wash bay.

Before starting dismantling, get your phone or digital camera ready and take photos of each step because each share or constituent is eliminated.

Step 2:

Put the cylinder in place to be restrained in the floor vice, apart from small detachable type cylinders. Clamping cylinders in a bench vise is not a good idea. If this isn’t possible, attach the cylinder to the clevis’ flat portion with a suitable sized rod or pin, connect the pin in the vice, and place the barrel end on the pin.

Step 3:

Next, level the cylinder and use sturdy bits of wood to hold the gland nut / rod end.

Step 4:

Stretch and extend the rod as needed to eliminate extra oil after both flanks of the cylinder, gather all waste oil in appropriate ampules, and discharge into a waste oil barrel for collection by a recognized waste collection business.

Step 5:

Put an oil ampule beneath the gland nut to catch the oil when removing the cylinder.

Because this is among the most essential and possibly time-consuming doings, careful organization, technologies, and attention to detail are required.

Step 6:

Remove the nut using Hydraulic Nut Splitter.

Step 7:

The majority of tube gland nuts are negotiated into the tub and must be unscrewed counterclockwise (warning: negotiated gland nuts can be quite tight, therefore proceed with caution and persistence).

Step 8:

Take a few minutes at this point to look for grease nipples oiling the rod and tub clevis pins. Grease points should always be removed and cleaned to safeguard that fat can reach the pins, since hardened bushes can twist in a dry swivel connection, blocking the grease path. Grease nipples should always be replaced with fresh ones.

Step 9:

Remove the rod assembly from the barrel and pour any oil into the oil tray.

Step 10:

Most cylinder gland screws are inserted into the barrel and must be unhooked in the opposite direction.

Step 11: 

Take a couple of minutes at this time to inspect the rod and barrel clevis pins for fat nipples. Because hardened bushes can bend in a dry pivot attachment, obstructing the fat channel, oil points should always be removed by washing to guarantee that fat can reach the pins. Fat nipples should be changed on a regular basis.

Step 12:

While using the Hydraulic Nut Splitter to separate the gland nut and piston from the rod, gently remove the closures from both the gland nut and piston. You’ll need specimens to measure and order.

To show the client what has been scrapped and replaced, place all old closures in a plastic bag. If two cylinders look to be the same, don’t presume they have had the same seals.

Step 13:

Once all seals, wear bands, and bushes have been replaced, use magnifying devices (internal caliper) to inspect the bore of the barrel. (Look in three places at the bottom, three places in the middle, and three places at the end of the barrel.)

Step 14:

Measure the rod and place a straight edge against it to check for damage. (Damage includes rust spots, dents, scrapes, and plating loss.)

If there are any defects (scratches/dings), repair or replace it. A new cylinder should be obtained if this is not possible.

Step 15:

After you’ve removed the sealing, search for “grid for seals” in the and, if something doesn’t function, search on the Job card wall.

Step 16:

Only calculate the grooves in the seal and wear bands from one end to the other. Draw and label sizes on square paper.

Step 17: 

Take samples of the seal and slots, then order a new set from the cylinder manufacturers or a reputable seal supplier. (Make certain the components you’re removing are appropriate for the task.) Check the dimensions against the parts and components and constituent sizes.

Step 18:

Double-check all measurements before reconstructing.

Insert the gland nut and piston in the spindle and polish any rust or imperfections using emery paper.

Step 19:

Run elements through with a wire wheel if required to remove any defects.

Reinstall the seals in the gland nut and piston once everything is clean. Attach the seals to the piston with a piston ring expander or a hose clamp, then place the piston component in a plastic bag and freeze for 20 minutes to shrink the valves and make them easier to attach.

If the rod is secured with a nut, attach the gland nut and the lock-tight piston. (To avoid damaging the piston seals, make sure the piston is in the appropriate position.) After that, you may look at the photos you took for expert judgment.

Step 20: 

Replace the rod component and secure the gland nut after oiling the barrel.

Put the cylinder on the test bench and do a test method in both sides before fully withdrawing the rod and blocking the piston side of the cylinder. By pouring oil into the piston side, you can check for bypassing.


After reading this guide, you must get clear on how to remove rusted nut. But still if you are confused there is nothing to worry about. Things are very easy and simple to accomplish. It only needs attention.

If you are unable to use, you can seek assistance from hydraulic or pneumatic manufacturers or specialists. But don’t worry, once you’ve finished reading this tutorial, I’m confident you’ll be able to accomplish it on your own.

Simply follow these 20 simple steps, making sure you utilize the Hydraulic Nut Splitter to remove the nuts. Rest will be very easy for you. Best of luck with your rusty nut removal.