In order to avoid facing a spongy or bubbly brake on, it’s wise to bleed the brake by gravity. A lot of drivers don’t know the right way to get it done. And things get even complex when one needs to get it done all by themselves.
Learning how to gravity bleed brakes alone and then trying can help. Filling the brake reservoir with pure fluid and then gently opening up the nut of the bleeder for a couple of minutes will ensure a bleed of the brake. End the bleeding stuff of the brake by attaching the nut tightly.
It might be confusing to get a short answer. Now worries! I’m here to explain the whole procedure today. Let’s Get Started!
Here’s How to Gravity Bleed Brakes Alone.
With the right way, you can get rid of the microbubbles which are causing the brake to lose its working ability. Let me show you exactly how to bleed brakes by yourself no special tools AKA the gravity method:
Step 1: Reach the Bleeders At 4 Wheels.
Start by, wearing the safety equipment. You have 2 options to reach the bleeder and these are:
- Remove the 4 wheels nut and then take out the tires.
- Use a jack lifter on the 4 points to lift the truck and access the bleeders on four sides.
Follow whatever route you find easy to reach the bleeders but make sure the method is safe and won’t cause further struggle.
Step 2: Contact the Brake Reservoir & Cover It with A Towel.
Next, grab one or two towels and simply clean the cap of the reservoir. Be sure to make a simple ring around the reservoir with towels. It’ll help later to deal with the microbubbles including fluid (which could be really bad for the metal parts).
Step 3: Add Fluid On The Brake Reservoir.
Remove the cap from the reservoir using your hand. In this process, you’ll see some bad fluid popping up. Let it be like that for 20 – 30 minutes to remove filthy fluid as much as possible.
Refill the easy absorbing type brake fluid like the Prestone AS800Y DOT 4 to ensure the fluid inside is fresh. Put the cap back in its place.
Step 4: Insert The Tubing Into The Bleeder.
After that, move towards the wheels (far from the master cylinder) and reach the bleeder. Take out the dust cap from the bleeder and simply attach the vinyl tubing head. Be sure the tubing is placed up to down so that the bubble can come out easily.
Step 5: Put Wrench on The Bleeder Mouth.
Insert the wrench on the bleeder to open it with a ¾ turn motion. Look closely at the upper side of vinyl tubing to see if the bad brake fluid is coming or not. It’s what we all call gravity brake bleed in case you don’t know.
FYI, the color of brake fluid which will come out is either dark brown in color like coffee or orange-brown like tea. Wait for it to come out completely. This will need 5 – 20 minutes at least.
Step 6: Close the Bleeder Mouth & Detach the Tubing.
Once you see the clear fluid coming out of the tubing, it’s when you have to close the bleeder mouth using the wrench. Take out the vinyl tubing from the bleeder’s mouth.
Step 7: Refill the Brake Reservoir.
Move to the reservoir and simply fill it with fresh fluid again. For that, open the cap and fill the reservoir with the brake fluid. Close the cap to finish this procedure.
Step 8: Repeat the Gravity Bleeding Method For 3 Times.
Do the same thing from Step 2 – 7 for three times. This will ensure no bad fluid is filled inside. And then, you have to do the same thing on the other 3 wheels. That’s how to bleed brakes naturally through gravity.
Frequently Asked Questions
1. Can you bleed brakes by gravity?
Yup, you can! With the right direction and technique, you can bleed the brakes by gravity and ensure no air bubbles inside to restrict the hydraulic pressure.
2. How often should you bleed your brakes?
You should bleed the brake by gravity every 1 or 2 years in order to keep the brake fluid fresh. It’ll later help the brake to operate quickly and efficiently. In short, you have to bleed in every 20k to 150k miles.
3. How long does it take to gravity bleed brakes?
It will take up to 5 to 6 minutes to completely bleed the brakes by gravity. Some trucks can take more than 20 minutes based on the trapped bubbles inside.
This is not the easiest way of cleaning the brake fluid, but then again, results will be best with gravity bleeding.
Yeah, it’s true that it takes a long time to complete but you have the facility of getting rid of the bad fluid without spending much on this.
Hope you find this guide about how to gravity bleed brakes alone detailed to try with your truck and see the result for yourself. Have Fun!