How To Replace Seals In A Hydraulic Floor Jack

Having worn-out seals in your floor jack is an issue which will pave way for ten other problems.

However, just as it is possible for a user to identify a damaged seal of their hydraulic jack from a mile’s distance, it is also plausible for them to replace it with ease.

The mess of leaking fluid that damaged seals leave behind is a simple giveaway you need to replace with new seals. The process of replacement in itself is quite simple and easy but you do need to make sure to be mindful of a couple of things to ensure your hydraulic floor jack operates flawlessly afterwards.

To pull you out of your misery and the leaking mess, I have jotted down the entire process of replacing the damaged seals with new ones in simple and easy steps below. Therefore, without wasting any more of your precious time, let’s get down to business.

How To Replace Seals In A Hydraulic Floor Jack

It seems difficult, but with the help of the below-stated steps, you will be able to replace the seals in your hydraulic floor jack with ease.

Tools Needed

The items that you are going to need for a flawless replacement job include a wrench and a new set of seals that are identical to the old ones. It is critical for you to make sure that the new seals you get are exactly the same as the old ones in your floor jack, otherwise, the replacement job will not be successful. You are also going to require a small screwdriver and a  nose plier.

First Step

Now that all your tools are laying neatly on your worktable, take the hydraulic floor jack and place it on the table as well. Make sure to remove all the fluid from the floor jack before you start the replacement procedure so that there is no oily mess. Now turn the hydraulic floor jack so that the handle section is facing you. On both sides of the handle, there will be mid-sized nuts, you need to unbolt them and take them out of the main body of the hydraulic floor jack. You can use your wrench for this step.

Second Step

After removing the side bolts, remove the springs from the inside as well. Now you will be able to take out the handle section and remove it from the body of the machine. Make sure that you place all of the parts neatly because losing sight of even a single bolt will result in frustration and an extra visit to the market.

Third Step

Right next to the centre part, which is the release valve of the hydraulic floor jack, the piston of the hydraulic floor jack will be present. You will see a small nut present close to the edge, unscrew it and take it out. Once you remove it, there will be a small seal in there. You need to remove the damaged one with a new one. You can use a screwdriver, or nose pliers to take out the old seal. Once it has been removed, place the new one inside the valve and then place all the parts in their places. Make sure to place the new one very carefully.

Fourth Step

Now that we have replaced the first seal, we are going to move to another one. The second seal that we are going to replace is present in the fluid valve of the hydraulic floor jack. So, move to the small screw present right next to the one we just shut. You can use your screwdriver to open it and when it has been removed, the fluid valve will be opened. There is a small seal in there which needs to be changed after a while. So, take your nose pliers and wiggle the old one out of the fluid valve.

Fifth Step

Once you have removed the old seal from the fluid valve, take the new one and put it in the place of the older one. This is a critical step and you need a steady hand for that, as a single tug or rip will cause damage to the new seal. Once it is in its position, you can use your finger to jam it in the gap. Clean the nut of the fluid valve before screwing it back in its place. Now take your wrench and re-assemble the rest of the parts that you removed from your hydraulic floor jack. Lo and behold, that is all you needed to do to replace the seals in your machine.


Having a hydraulic floor jack with damaged seals means owning a machine that will not function smoothly and will keep dripping fluid instead. Therefore, you need to replace them with new ones immediately. Lucky for you, the article above states the entire procedure in layman’s terms.


Janathan Greez
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