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The best way to do this is to compress the strut spring continuously in tiny increments, switching back and forth between both sides. You should do this until sufficient tension has been relieved from the strut spring. The ABN 9210 MacPherson Strut Spring Compressor takes tension off to safely remove strut and spring assembly.
Maximum jaw opening is 300mm.The spindle is driven by a 21mm hex nut and is not designed to be used with a impact gun. However, if you need to take the shock and spring apart, then you’ll either need spring compressors or you can perform the No Spring Compressor Method. If you're fixing your vehicle's suspension, one essential tool is a strut spring compressor.
How do you compress springs to lower a car?
First, you will need to find a way to prop up the car so that the strut is not under any tension. If you’re wondering how to compress a strut spring without a tool, you’re in luck. There are a few different ways to do this, and we’ll walk you through each one. How To Compress Strut Spring Without ToolCompressing a strut spring without a tool may seem like a daunting task, but it is actually quite simple.
Once you have reinstalled the strut onto the car, you can place the wheel back and tighten the lug nuts. You can then move to conduct the same procedure on the other side’s strut assembly. This process requires you to pay close attention to how the lowering springs are placed on the strut perch. If they are placed incorrectly, the holes are unlikely to line up when installing these lowering springs onto the strut assembly. The plates are pitched to match the slope in the helix of the spring.
Loosen the Lug Nuts
The spring releasing all of its compression energy can seriously injure you, if not kill you. Do your research, watch videos online, and do as much learning as possible to completely understand how the suspension components work before trying this yourself. Unlike lowering springs, coilovers offer a much greater range of adjustability including ride height, spring pre-load, shock damping, and rebound. Typically, coilover sets feature even stiffer spring rates than a set of lowering springs alone, again sacrificing ride quality for cornering performance. The compressor is rugged and durable, so it resists bending or warping under high tension. The hex nuts are easy to turn, so they can better grip the springs.
It is more expensive than the hook style tool, but the extra money spent is more than compensated by the savings achieved by “doing it yourself”. Coil springs are tightly wound and under extreme pressure and there is a high risk of personal injury if replacement is not performed correctly. Shock absorber replacement on vehicles today are more like struts; they have coil springs surrounding them.
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The No Spring Compressor Method is a way of disassembling your shock assembly without the use of a spring compressor tool. In your coilover/shock assembly, you have a spring that is compressed by a shock between the upper and lower perches, which are connected to the shock. This assembly of shock and spring can be mounted to the frame of the vehicle and then to the lower control arm . The perches may look different from depending on the type of shock assembly you have, but they serve the same purpose with some models offering some level of adjustability. If your car has coil springs instead of struts, you can use a coil spring compressor to safely compress the spring. You can buy a coil spring compressor at most auto parts stores.
If you’re looking to compress a strut spring without a tool, there are a few things you can do. First, you’ll want to make sure that the spring is seated properly in the strut mount. You can do this by gently pushing down on the spring with your hand. This process requires you to remove the bolts that secure the front strut assembly to the car. They can be removed using a ratchet, wrenches, or appropriate sockets. As you are jacking up the shock assembly, you are compressing the spring— again reintroducing danger of the spring’s energy.
Q: How do I use a strut spring compressor?
Even go watch a bunch of “coil spring fail” videos on YouTube to know what can go wrong. People have gotten incapacitated and killed from accidents like these, so fully understand that this can be extremely dangerous and fatal if not done properly. All shocks are a hydraulic-style shock; some of them use oil and some of them use gas.
Be sure to use a protective pad on the spring to avoid damaging it. Once the spring is compressed, you can remove the spring from the strut mount. If a coilover has a preload or if you are dealing with a strut that requires a spring compressor to remove the spring, this tool adds safety and speed. It's also handy for setting preloads on a drag car or changing spring rates during a track day without using a spanner.
Several users have stated they were unable to loosen and remove them after use. I solved this problem by clamping a small Vise Grip on the downward-facing side of each hook to prevent it from sliding. Taking great care to never have the compressed spring aimed at any part of my body, I was able remove the retainer, unscrew the turnbuckle, and remove the spring. This method may take a few tries to get the spring compressed enough, but it will eventually work. Once the spring is compressed, you can remove it from the strut and proceed with your repair. Once the compressor is attached, tighten it until the spring is compressed enough to work on.
With a few tools, such as a coil compressor and angle grinder, you can cut the coil springs yourself. To use this tool, you will need to remove the coilover from the car. The spring compressor hooks can handle spring diameters from 3.5-inch to 11.5-inch and compress 3,000 pounds. Align the lower three spring hooks with the spring coils, making sure the coil is dead vertical. Adjust the top hooks, making sure they are on the upper coils, not the bearing plate. Unlike the hook style tool, a more complete and uniform compression allows the strut mount and lock nut to be installed.
If the springs are cut excessively, the spring coils can bottom out on themselves. Using a plasma cutter or oxyacetylene torch to cut springs will destroy the temper of the metal and will make the spring too soft. You also shouldn’t cut progressive springs or springs with square ends.
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