important: Nuts and bolts on your bike should always be tightened to the manufacturer's specifications.

How to Bleed Tektro Auriga Comp Disc Brakes

Learn how to bleed the air out of Tektro Auriga Comp hydraulic disc brakes.

In this tutorial we’ll learn how to bleed the hydraulic brake system on Tektro Auriga Comp Disc Brakes. You should always bleed the system after shortening or replacing the hose, or if you have opened the system to air at any time. If your brake action feels spongy, bleeding the system will also improve performance.

What You’ll Need

For this job you will need a 2, 3 and 4mm allen wrench, a 7mm open end wrench, a T15 Torx wrench, a piston holder or 10mm allen wrench in order to keep the pistons in place, a small bag and elastic band, and a clean rag. You will also need a Tektro hydraulic disc brake service kit, which should include a syringe, 2 lengths of plastic tubing, an outlet valve, and a bottle of Tektro hydraulic brake fluid (mineral oil). Make sure to use the specific type of oil for this brand, as using other types could damage your system. A repair stand and clean work space are also highly recommended.

Mount your bike in the repair stand, making sure the wheel axles are parallel with the floor. Now remove your wheel. Remove the disc brake pads and slide a piston block or 10mm allen wrench into the gap to keep the pistons in place.

Remove the rubber cover from the bleed outlet valve on the brake caliper. Attach the smaller tube from your service kit onto the syringe and fill your syringe about halfway with oil. Now firmly insert the syringe and tube onto the bleed outlet valve.

Using your 4mm allen wrench, slightly loosen the brake lever bracket until it rotates on the handlebar. Loosen and move the shifter out of the way if needed. Rotate the brake lever so that the top of the reservoir tank is parallel with the ground.

Using your T15 Torx wrench, loosen and remove the bolt on top of the reservoir tank, and thread the outlet valve into the hole, with the longer plastic tube firmly attached and place the other end into your plastic bag and keep it in place with an elastic band.

Now open the outlet valve on the caliper slightly 1/8 to 1/4 turn. Using the syringe, push and pull the oil back and forth through the system several times until there are no more air bubbles coming out of either end. Now tighten the bleed valve with your 7mm spanner to 4-6Nm.

Remove the hose and reinstall the rubber outlet valve cover. Now remove the outlet valve from the reservoir and reinstall the bolt using your T15 Torx wrench. Tighten this bolt to 2-4Nm.

Use a clean rag to wipe any excess oil off the lever, caliper, and hose. Reinstall your brake pads and front wheel. Depress the brake lever a few times, to ensure the action feels stiff and not spongy.

In our next tutorial we will take a more in-depth look at replacing and adjusting the brake pads on this model.

Related Links

Recommended Tools

Categories

Discuss this topic in the Bicycle Repairs and Mechanics Forum

freewheel sprocket noise?

Latest post 2 hours ago

does this noise mean anything? The bike was not used and left outside for a long time. The freewheel sprocket spun free in both directions. After removing it and dripping oil thru it in both directions it appeared to work fine. Once reinstalled it still works fine, but does make this noise when I stop peddling. With bike upside down and rear wheel spinning freely i can also fell the noise as a vi...

Read more

Help with a wheel please !

Latest post 2 days ago

Hello all. My name is Andrew, and I reside in sunny Bognor Regis, UK. I have been an avid BMX rider my entire life, but my body has taken a battering and I now have arthritis creeping in and if I am really lucky* I will also inherit my mother's osteoporosis. *yeah was being sarcastic. No other form of comedy funnier etc lol. Any way, when my body started to fall to bits and I had a bad BMX wreck...

Read more

I have a 1975 Hutchins road bike and want to, if possible, fit a modern crank set, say a Campy Centaur Compact, to the bike. Can this be done and would the existing 1975 front Campy derailleur work? Thanks, Dorsey...

Read more

Help with wheels please.

Latest post 5 days ago

I'm trying to find a 3 spoke or 5 spoke wheel for my virtue hybrid bike. All I can find is for road and fixie bike only.   Screenshot_20220522_213714_com.android.chrome.jpg (Size: 30.77 KB / Downloads: 6) ...

Read more

Brake problems

Latest post 5 days ago

I just installed a new set of brakes on a bike at a hostel I've been staying at and I can't get them to work right. First, the front brake lever has a ton of lateral play and they don't have much power when applied. Second, the rear brake arms won't release. It doesn't seem to be an issue of the brake nut being too tight, I can loosen it to the point where I can easily move the caliper by hand a...

Read more

Just wanted to drop some positive encouragement for taking your spindle crank out and getting some fresh grease in the cups and on the axle regularly. This will dramatically improve the performance of your drivetrain. For example on how often, I had fully overhauled my bike back in March, when I converted it back to urban street from the snow conversion. It's only May, not even 300 miles on it sin...

Read more

Inner Tubes

Latest post 2 weeks ago

First, I'm new here and also Thanks in advance for reading and helping me out. I'm a casual bike rider who lives in a large city and enjoys getting out for a ride in the summer to enjoy the beautiful weather. I don't have a very fancy bike (Trek) but it get's me around just fine. My Problem: I don't know if this is normal on all bike's but I have to put air in my tires every 2 weeks. I've replaced...

Read more

I received an update on the purpose of the alternate hole positions for the Stone Oval Chainrings for bolt-on cranks and I wanted to share it here for everyone to learn. This is the information that was provided to me. Hole 1 is for high speed cadence on flat terrain. Hole 2 is for versatility between flat and hilly terrain. Hole 3 is for leverage for cyclists that climb hills often.  ...

Read more

I made a video of what my bike is doing. Can someone please watch and help? https://youtu.be/NTu-831CuGM...

Read more

Assembly question Giant Roam

Latest post 1 month ago

Hi I am trying to assemble my Giant roam but hit a road block. I can see a lot of wires but not sure what to do with them. Couldn't find a video for assembly of my bike either.   20220424_115528.jpg (Size: 78.6 KB / Downloads: 11)   20220424_115521.jpg (Size: 72.52 KB / Downloads: 11) ...

Read more

Vintage Rear Hub

Latest post 1 month ago

  Rear Wheel Hub.jpg (Size: 74.14 KB / Downloads: 34) I have inherited a Dawes Wildcat of uncertain age and want to renew the bearings in the rear hub. I have included (hopefully) a photo of the gears and need to learn how to disassemble this to be able to fit new bearings. I have searched the Web for what might be a suitable tool, and visited local bike shops, but without success. ...

Read more

ISO discontinued freehub body

Latest post 1 month ago

So recently I purchased a used bike (circa 2012), some repairs/replacements necessary but otherwise works great, I like it. There is a problem that developed though this is not easily fixed: The wheels it came with are Easton EA70 SL (also nice, also circa 2012) and the freehub body's interior is damaged and became stripped and now the "locking" cog is not locked anymore (I guess I'm just too po...

Read more

My rear hub started a weird noise so I took apart my coaster brake. I found that the one ball bearing cage was shattered. I tried following the advice at Sheldon Brown to just use more ball bearings but it did not work well (Doesn't roll smoothly). So I bought replacement caged bearings, and fixed the noise when coasting. But now there's still this creaking sound when I pedal, even when applyi...

Read more

I have an older steel road bike — I'm guessing late 1970s, early 1980s, but a high-quality Columbus tubing steel frame. It has old Mavic wheels w/ freewheel, 6-speed, but I am wondering if it is possible to convert the bike to a more modern cassette. I have an old Easton 10-speed wheel, and I am wondering if that would fit the frame (or how I can find out if it will). My second question is thi...

Read more

I had an issue today with the Risk adhesive frame mounted cable holsters. I purchased these from Ali-Express to fix some issues with my clunker's frame having awkward mounts that don't work well with caliper brakes. The clamps they come with are standard size for frame welded or integrated cable mounts. They are not contoured to the Risk adhesive mounts. Meaning, they are too big for a single cabl...

Read more