How to Replace a Front Brake Hose

Lead Image
  • 1-3 hours
  • Intermediate
  • 30-100
What You'll Need
Jack and jack stands
Drip pan
Line wrench
Brake hose
Brake fluid

There are a few reasons to replace the front brake hose on your vehicle, the most common being a leak. This problem can cause your brakes to malfunction since it's the front brake hose that supplies fluid. It runs from your brake master cylinder to your front brake calipers, and when the brake calipers do not have the required amount of brake fluid, they will not push down the brake pads on the rotor to stop your vehicle. Fortunately, replacing the front brake hose on your vehicle is not a hard project. There are a few very important steps that you must follow, however, to ensure your vehicle is safe.

Step 1 - Set Up

The first thing you need to do for this repair is to jack up your vehicle and remove the tire. Make sure to place your jack stand in a safe area so that the vehicle will not fall; this is a very important safety measure. Next, place a container under the front brake hose. This will catch the brake fluid in the hose so you can dispose of it properly.

Step 2 - Remove the Old Hose

Before you can put on your new front brake hose, you have to remove the old one. To do this, take your line wrench and loosen the hose fitting in the vehicle framer. After that, remove the fitting on the brake caliper. Then, all you need is a screwdriver to remove the hose clamps that hold the hose in place.

Step 3 - Install a New Hose

Now you are ready to install the new hose. Simply fit the hose back on the frame fitting first, and then onto the brake caliper. Finally, reattach the hose clamps as well.

When tightening the hose, it is very important not to cross tread the fitting, as this will cause it to leak. Also, be careful to not overtighten. You can easily break or crack the fitting instead.

Step 4 - Bleed the Brakes

The final and most important step in the repair is to bleed the brakes, which involves getting all the air out of the new hose. If you don't, the air in the lines can interfere with the proper operation of your brakes.

Fill the brake fluid reservoir. Then, stay near the caliper and have the person inside the vehicle pump the pedal three times and hold it down on the third. While they are holding the pedal, you need to back off the bleeder at the caliper. Do this process a few times until all the air is out. Then, replace the wheel, take your vehicle off the jack, and test your repair in safe area.