Trolley jacks are hydraulic floor jacks built on swivel wheels to allow for straightforward maneuverability. They have a single function: to lift weights that can be in excess of 2 or 3 tonnes, and this makes ownership a must for those working in garages or other areas of vehicle servicing.
Whether you’re simply an automotive enthusiast or you’re an industry professional, it’s essential that you take care of your trolley jack. If you don’t, you might be in serious trouble, as you’ll find out by continuing to read this article. If your jack is no longer lifting to its full height, feels "spongy" or is slowly lowering then the most likely cause is air trapped in the system.
Why You Need to Air Purge Your Trolley Jack
As a closed system that relies on hydraulic pressure to generate lift, you might think that a trolley jack is invulnerable to air contamination. Actually, this is far from the truth. In abstraction, it would be the case that because of the closed nature of a hydraulic floor jack, it would be expected that no air could penetrate the system and there would therefore be no need for bleeding.
Unfortunately, the world doesn’t operate in abstract, and hydraulic trolley jacks are not always perfect. The cylinder is ended by valves and seals, and air can pass through these over time. If a crack in the seal occurs, you’ll find that the reliability of the jack becomes compromised, and the jack might actually not be safe to use. The release valve can also draw air in during use which again becomes trapped within the hydraulic system. This makes looking after your trolley jack essential.
You can remedy this by bleeding your jack following a quick and simple procedure. If you really want to ensure the longevity of your jack, and that it works to its optimum level of performance, it’s something that you’ll need to master. So without further ado, here’s a short guide that explains how to bleed your trolley jack and why you really ought to do it.
How to Air Purge Your Trolley Jack
1. The jack handle should be placed on the release valve and turned to open the valve.
2. Place the handle back into the receiver and pump the jack handle up and down 20 times.
This should force any air from the system and lubricate the seals.
3. Close the release valve.
4. Test the jack. If the jack won't lift or lifts but won't hold a load then repeat the procedure.
If the problem persists then please contact us.
So there you have it: some simple steps to bleeding your trolley jack. This isn’t necessarily the most difficult task, but it’s one that simply must be done if your jack starts drop slowing, feel spongy or no longer jacks to its full height.
Trolley jacks aren't really a complicated product. They’re simply a hydraulic floor jack lifting device which is used by professional mechanics in garages across the world, and similarly, by car enthusiasts globally, too. This makes them an extremely popular product and one that is crucial if you want to get under your car for examination or to do scheduled maintenance work on it.
These jacks are capable of lifting a range of weights, so it’s important that when you choose yours, you take into account what size vehicle you own/will be working on, and that you also remember that you’ll need more than a jack if you want to get under your car, as it’s dangerous – potentially life-threatening – to do so without extra support and protection.
Ultimately, you can see that trolley jacks are fundamental if you want to work around cars and vans, but using them safely is crucial to the longevity and proper working of the product itself.
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