ABS Modulator Unit
Years ago it was necessary for drivers to slam on the brakes and press repeatedly when they spun out of control, but ever since the ABS modular unit was invented that is no longer the standard operating procedure. This unit uses a series of belts to drive the modulators which help the car to brake properly. Anti-lock breaking or ABS was a truly innovative change in the way which most vehicles were designed and manufactured, because it made them significantly safer and more efficient as a whole. In modern cars which are made around the world this unit prevents the car from skidding by using specialized brake cylinders to regulate pressure and therefore help the driver to steer properly. This is why there have been fewer and fewer accidents on the road with regards to slipping on wet or icy surfaces. There are a number of parts to these units, including the input amplifier which receives signals from a magnetic wheel which has special speed sensors. It has been a truly revolutionary innovation in automotive design and if you need a new unit you will have to learn quite a few things.
These units are hydraulic in nature and have multiple modular valves which are controlled electronically to reduce the amount of braking pressure which results from pressing this pedal in the vehicle you are in. Brake fluid is an essentially part of this unit because it helps the car to slow down and eventually stop altogether if enough pressure is applied. This fluid comes from the solenoid valves and there is one of these for each individual unit. All in all there are four of these valves because there must be one present for each individual wheel. If you are planning on installing your own ABS modular unit, it is important that you know how they work as well as how to install one. Chances are the manual that came with your car will be able to provide you with specific instructions on how to remove and install it.
Most of the time when it comes to removal of this unit the first thing you will have to do is remove the strut bar. After you have done that you will then want to disconnect the three connectors and take out the emission control box which is located in the bulkhead. It is important to not remove the vacuum hoses when you are doing this. You will then need to completely unbolt the brake line bracket which can be found under the emission control box. This will allow for efficient removal of the brake line fitting. The next thing you will have to do when going about removing the unit from your vehicle is to disconnect the four engine wire harness connectors as well as unbolt the harness clamp. Make sure that all three of the solenoid and pump connectors are completely disconnected.
It will then become necessary to remove the bolts which hold in the upper heat shield. After you have raised the car you will be able to loosen them but make sure not to remove. If you are having trouble finding the heat shield mounting holes, you will want to remember that they are in the shape of a keyhole. The next step is to lower your vehicle and completely remove the heat shield, and then relieve the line pressure with a Bleeder T-Wrench which will work well for this particular job. The very last step you will have to go through when disconnecting this unit is to take off the steel brake lines from the modular (there should be six of them). You will then need to cap the two lines from the master cylinder of the vehicle so you will be able to prevent fluid loss. Keep in mind that removing the ABS modulator unit is something you should tackle only if you have experience doing this type of work; otherwise leave it to a trained mechanic.
If you are looking to purchase a new unit for your vehicle, it will be important to make sure that you get one which you know will work. Although it is true that shopping on auction websites on the internet for used auto parts can be a good thing, it’s not always the case. With some of the larger and more significant parts like these, it might be a good idea to get them brand new so as to avoid any problems with compatibility or overall quality.