QA

How To Bleed Hayes Nine Brakes

How do you bleed the brakes on a Hayes bike?

1 Assemble the bleed kit. Push the hose onto the nozzle of the bleed bottle. 2 Remove brake pads. Remove both wheels, then remove the brake pads. 3 Retract pistons. 4 Get bike into correct position. 5 Raise the bleed nipple. 6 Attach long hose at lever. 7 Attach bleed kit at calliper. 8 Add oil and release trapped air.

How do you adjust Hayes 9 hydraulic brakes?

Pull the wheel out and squeeze your brake lever half way (without the rotor), then re-insert the wheel should bring the pistons closer to the rotor for quicker engagement. The lever adjustment screw just positions the lever, but doesn’t affect throw.

What fluid does the Hayes sole use?

First things first: the Hayes system uses DOT 3 or DOT 4 mechanical brake fluid.

Are Hayes Nine brakes good?

We’ve used hundreds of sets of Hayes Nine brakes in our years of bike testing and these faithful speed eaters are still some of the best basic brakes around. They’re super consistent at the highest Alpine temperatures too, and while we eventually warped the rotor on the dyno, the brake itself was absolutely fine.

What happened to Hayes brakes?

In 2005 the company’s nine-member management team bought Hayes Brake with Nautic Partners, a private equity firm, and renamed the company HB Performance Systems Inc. Hayes Bicycle Group has acquired Sun Ringle hubs, rims, wheels and components, WheelSmith Fabrications, Inc. and Answer/Manitou.

Which brake fluid should I use?

By far, DOT 3 is the most popular. It’s been in use for a very long time. Fresh DOT 3 has a boiling point of 401 degrees Fahrenheit, fully degraded it drops to 284 degrees Fahrenheit. This makes your brake fluid much more likely to boil.

Why are my disc brakes not working?

A loss of power can be due to a number of things. You may have air in the system and need to bleed your brake, your pads may be worn too far, your rotor may be too dirty, or your pads or rotor could be contaminated.

What is mechanical disc brake?

There are two main types of disc brakes: mechanical, which works with cables (just like rim brakes), and hydraulic, which replaces the cables with hydraulic fluid in a fully sealed line. When you brake, the pressure forces the fluid to move into the caliper, pressing the pads against the disc.

When should I replace bike disc brakes?

You should replace your pads when there’s 1.5mm or less of braking material remaining. If the pads are okay, replace the wheel and keep riding.

What is DOT 5.1 brake fluid?

BRAKE FLUID DOT 5.1 is a brake fluid for hydraulic brake and clutch systems with a boiling point of at least 260 °C and an extremely high wet boiling point of at least 180 °C. Because of the low viscosity at low temperatures, particularly suitable for additional systems, such as ABS and ASR.

Are Hayes brakes good?

Hayes has invested considerable design time in reducing friction in the system and the beautifully light and balanced lever action should be considered a great success, late braking is very intuitive, easy to dose and very effective.

Are Hayes disc brakes hydraulic?

The Hayes is also a self-adjusting, open-type hydraulic system. The right- and left-hand master cylinders are exactly the same item, and you can reverse the levers without inverting the reservoirs, unlike with the Shimano brake.

Where are Hayes brakes made?

Where are your products manufactured? At Hayes Performance Systems, we proudly manufacture our brake systems for power sports, heavy equipment, and military right here in the USA at our global headquarters in Mequon, Wisconsin, with reliable components from domestic and global partners.

How do you bleed brakes by yourself?

How to Bleed Brake Fluid, One-Person Bleed Safety First. Park your vehicle on a flat, dry surface and install wheel chocks. Remove the old brake fluid. Add new brake fluid. Determine Which Wheel to Bleed. Locate the brake bleeder valve. Connect the vacuum pump. Open the bleeder valve. Close the brake bleeder valve and repeat.

Can I use DOT 3 instead of DOT 4 brake fluid?

Yes, DOT 3 brake fluid is compatible with DOT 4 brake fluid. However, DOT 4 offers a higher boiling point. It’s compatible with DOT 3 and DOT 4 fluid. DOT 5 brake fluid is silicone, meaning it doesn’t absorb water.

How much brake fluid Do I need to bleed my brakes?

Good-quality brake fluid isn’t expensive; you’ll probably need two or three 12-ounce cans to bleed the system.

How much mineral oil do you need to bleed brakes?

Add mineral oil brake fluid into the syringe/funnel, enough to generously cover the bottom to ensure no air can enter the system from above. 5ml should be plenty if you’re using our bleed kit.

What can you use instead of mineral oil for brakes?

Alternatives for mineral brake fluid / oil (in a pinch) Fork cartridge oil (the lighter (more viscous) variant) Total / Castrol LHM Plus Fluid ( I believe it’s power steering fluid).

Can you bleed brakes without taking the tire off?

Yes, you can. But it would be easier to take them off so you can get to the bleeder nuts. These “self bleeders” aren’t worth the plastic they are made of.

Can you bleed brakes without using a hose?

If your vehicle has squishy-feeling brakes, the way to get the air out of the lines is to bleed the brakes. To do the job, you need either a brake bleeder wrench or a combination wrench that fits the bleeder nozzle on your vehicle, a can of the proper brake fluid, a clean glass jar, and a friend.

Is gravity bleeding enough?

If you are trying to bleed the air out of your brake system, the answer is a resounding no. By simply allowing the brake fluid to move from a firewall mounted master cylinder reservoir to the brake calipers (or wheel cylinders) using gravity, the fluid is moving too slowly.

Can you use car brake fluid in a mountain bike?

Broadly speaking, hydraulic disc brakes designed for bicycles will use either a mineral oil fluid, or an automotive DOT fluid. Genuine Shimano Mineral Oil is the only fluid compatible with Shimano brakes.

What does a bleed block do?

A bleed block, or piston spacer as it is sometimes known, is a plastic object designed to fit snugly between the pistons of your brake caliper, and its job is to prevent them from moving outwards during the bleed process.