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How to bleed my hayes 9 hyrdrilici brakes? - Cycling

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This is a fairly complicated procedure if you have not done it before. You will need the correct replacement oil and some specialty tools, and possible a few parts if they are damaged or seals are in need of replacement. It may be better to take this into your local bike shop and have them do it. Bleeding brakes is a time consuming and challenging task even for seasoned mechanics.

But if you really want to give it a try here you go.... Instruction manual

Posted on Apr 07, 2011

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Posted on Jan 02, 2017

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1 Answer

Problem with Norco Manik


You may need the brakes bled and checked for leaks. You may not be seeing any leaks because there is no fluid in the brakes. Have a local bike shop check it out.

Mar 25, 2014 | Norco Manik

1 Answer

Chevy c1500 abs 2wd Kelsey hayes


Provided you have no leaks then you still have air in the system and need to bleed each wheel and the master cylinder. You may want to use a pressure bleeder to do this but you can do it the old fashion way with someone pumping up the brake and holding it when you open the wheel bleeders just make sure they do not allow the pedal to return before you get the bleeder shut.

Jun 16, 2017 | Cars & Trucks

1 Answer

Brake issue.... turn left till steering pulses and brakes go to floor, and master cylinder bubbles... what would cause that. I bleed all brakes and all good, then random turn or out of the blue no...


It sounds like you have a faulty Electro-Hydraulic Control Unit (EHCU) or a Brake Pressure Modulator Valve (BPMV). Air is trapped in the valve body and air is much harder to get out of the master cylinder than it is the lines. You can try this method to help troubleshoot.

This is out of the Online GMsevice manual for a 2001 Blazer with 4-WD
Use the two-person bleed procedure under the following conditions:

Raise the vehicle in order to access the system bleed screws.
Bleed the system at the right rear wheel first.
Install a clear hose on the bleed screw.
Immerse the opposite end of the hose into a container partially filled with clean DOT 3 brake fluid.
Open the bleed screw 1/2 to one full turn.
Slowly depress the brake pedal. While the pedal is depressed to its full extent, tighten the bleed screw.
Release the brake pedal and wait 10-15 seconds for the master cylinder pistons to return to the home position.
Repeat the previous steps for the remaining wheels. The brake fluid which is present at each bleed screw should be clean and free of air.
This procedure may use more than a pint of fluid per wheel. Check the master cylinder fluid level every four to six strokes of the brake pedal in order to avoid running the system dry.
Press the brake pedal firmly and run the Scan Tool Automated Bleed Procedure . Release the brake pedal between each test.
Bleed all four wheels again using Steps 3-9. This will remove the remaining air from the brake system.
Evaluate the feel of the brake pedal before attempting to drive the vehicle.
Bleed the system as many times as necessary in order to obtain the appropriate feel of the pedal.

Good luck, i hope this helps.

Jul 05, 2011 | 2001 Chevrolet Blazer

1 Answer

97 siverado brake pedal goes to floor and theres no air in line no leak new master went motor its not running brakes feel ok as soon as i start engine pedal goes down


Does your truck have ABS? If so you may have a bad brake
pressure modulator for the abs. Its the big box by the Master that says Kelsey-Hayes on it. You can pick up the complete unit from a salvage yard at a pretty reasonable price.

I also found this on another site. I know you said that you blead the Master but check this information out. The bleeding of a new Master Cylinder is very important to get it exactly right.
http://www.ehow.com/how_4508156_bench-bleed-master-cylinder-chevy.html

Jun 19, 2011 | 1997 Chevrolet K1500

2 Answers

Replaced brake line, rotors and pads bled brakes all around and the brakes when the truck is off work but once i start the truck the brake pedal goes to the floor and have no brakes at...


Bench Bleed the M/C first, then do not let it run dry during system bleeding. Parts stores sell a kit that helps installed m/c bleeding.

Sep 29, 2010 | 2001 GMC Jimmy

1 Answer

How to bleed the brakes after you replace rear brake lines


hi, if you look at the back of the brake drum you will see a little bleed nipple just sticking out think its an 8ml or 10ml spanner fit, what you then need to do is find a piece of plastic pipe that will fit over the top of this to catch any fluid then make sure the brake fluid is topped up, you then need someone in the car to operate the brake pedal and some one at the back where the bleed nipple is once you have this you need to do the following

1 undo bleed nipple a couple of turns
2 get person in the car to push brake pedal to the floor and hold it on the floor.
3 when pedal is at floor tighten the bleed nipple up and get the person to let the brake pedal come up.
4 when pedal is up all the way undo bleed nipple and get person in car to push pedal to floor.
5 when pedal at floor tighten bleed nipple up
6 let pedal up
7bleed nipple undo a bit
7 pedal down to floor
8bleed nipple do up
9 pedal up
10undo bleed nipple

now keep doing that until all you have got coming out is fluid and no air when you have this do bleed nipple up and check the brakes to make sure they are not spongy.

whilst doing this you need to make sure the brake fluid level dont drop to low as you will have to bleed the front as well so keep checking the level and make sure its well topped up throughout the whole process

if you have any problems give me a shour back ok

Aug 14, 2010 | 1998 Chrysler Cirrus

2 Answers

Bleed brakes on 96 chevy 1/2 ton


YOUR TRUCK HAS KELSEY HAYES FOUR WHEEL DRIVE ANTI LOCK BRAKES EBC 310. YOU CAN BLEED BRAKES MANUAL STARTING AT - RR- LR RF- LF. THIS IS BLEEDING SEQUENCE.BUT YOU NEED A TECH 1 OR 2 SCANNER BECAUSE IF YOU REPLACED THE BPVM OR BRAKE PRESSURE MODULATOR VALVE.BECAUSE AIR TRAPPED IN VALVE ASSEMBLY.THE TECH 1 OR 2 SCANNER YOU HAVE PUT IN THE FUNCTIONAL TEST BLEED AIR OUT OF VALVE ASSEMBLY.THEN YOU CAN BLEED BRAKES MANUAL.

Mar 27, 2010 | 1996 Chevrolet K1500

1 Answer

I put new brakes on the front and can get no fluid to come out the right side when bleeding brakes


YOUR VAN HAS THE KELSEY HAYES EBC5H UNIT.THIS IS ALSO USED ON CHRYSLER TRUCK + VANS .ALSO FORD USES THIS ABS BRAKE SYSTEM.IN ORDER TO BLEED THIS BRAKE SYSTEM YOU NEED A DRB 111 SCAN TOOL OR EQUIVALENT.THE SCAN TOOL HAS TO CYCLE THE HCU PUMP AND SOLENOIDS IN ORDER TO BLEED BRAKES.

Sep 28, 2009 | 1996 Ford Windstar

1 Answer

95 Avalon rear brake caliper replacement


get a hayes repair manul from the auto parts store that will tell you every thing youneed to know

Aug 11, 2009 | 1995 Toyota Avalon

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