Question about 1995 Yamaha YZF 750 R

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No front brakes on 95 yamaha big bear atv

Replaced front brakes on 95 yamaha big bear,tried to bleed system several times at bleeder valve on wheel cylinder. cannot get any pressure at all. help please...

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  • Yamaha Master
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Gravity bleed. make sure fluid is always full. crack open the bleeder screw and let the brake fluid drip until no bubbles. Then close bleeder top off fluid and replace cap. Now, pull the brake handle. If there is no pressure or has bleed down, the master cylinder is kaput.

Posted on Jun 20, 2009

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Posted on Jan 02, 2017

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I have an 01 GMC Jimmy 4.3L 4WD & we are trying to bleed the brakes but the scanner says my vehicle is going 3MPH so we manually bleed the brakes but the pedals still easily is pushed to the floor.


Bad master cylinder . What are you using a scan tool for ? No need Unless your Installing a new Electro-Hydraulic Control Unit (EHCU) or new Brake Pressure Modulator Valve (BPMV).
Hydraulic Brake System Bleeding (Manual)
Caution: Refer to Brake Fluid Irritant Caution in the Preface section.
Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in the Preface section.
Place a clean shop cloth beneath the brake master cylinder to prevent brake fluid spills.
With the ignition OFF and the brakes cool, apply the brakes 3-5 times, or until the brake pedal effort increases significantly, in order to deplete the brake booster power reserve.
If you have performed a brake master cylinder bench bleeding on this vehicle, or if you disconnected the brake pipes from the master cylinder, you must perform the following steps:
3.1. Ensure that the brake master cylinder reservoir is full to the maximum-fill level. If necessary add GM approved brake fluid from a clean, sealed brake fluid container. Refer to Fluid and Lubricant Recommendations.
If removal of the reservoir cap and diaphragm is necessary, clean the outside of the reservoir on and around the cap prior to removal.
3.2. With the rear brake pipe installed securely to the master cylinder, loosen and separate the front brake pipe from the front port of the brake master cylinder.
3.3. Allow a small amount of brake fluid to gravity bleed from the open port of the master cylinder.
3.4. Reconnect the brake pipe to the master cylinder port and tighten securely.
3.5. Have an assistant slowly depress the brake pedal fully and maintain steady pressure on the pedal.
3.6. Loosen the same brake pipe to purge air from the open port of the master cylinder.
3.7. Tighten the brake pipe, then have the assistant slowly release the brake pedal.
3.8. Wait 15 seconds, then repeat steps 3.3-3.7 until all air is purged from the same port of the master cylinder.
3.9. With the front brake pipe installed securely to the master cylinder, after all air has been purged from the front port of the master cylinder, loosen and separate the rear brake pipe from the master cylinder, then repeat steps 3.3-3.8.
3.10. After completing the final master cylinder port bleeding procedure, ensure that both of the brake pipe-to-master cylinder fittings are properly tightened.
Fill the brake master cylinder reservoir with GM approved brake fluid from a clean, sealed brake fluid container. Ensure that the brake master cylinder reservoir remains at least half-full during this bleeding procedure. Add fluid as needed to maintain the proper level.
Clean the outside of the reservoir on and around the reservoir cap prior to removing the cap and diaphragm.
Install a proper box-end wrench onto the RIGHT REAR wheel hydraulic circuit bleeder valve.
Install a transparent hose over the end of the bleeder valve.
Submerge the open end of the transparent hose into a transparent container partially filled with GM approved brake fluid from a clean, sealed brake fluid container.
Have an assistant slowly depress the brake pedal fully and maintain steady pressure on the pedal.
Loosen the bleeder valve to purge air from the wheel hydraulic circuit.
Tighten the bleeder valve, then have the assistant slowly release the brake pedal.
Wait 15 seconds, then repeat steps 8-10 until all air is purged from the same wheel hydraulic circuit.
With the right rear wheel hydraulic circuit bleeder valve tightened securely, after all air has been purged from the right rear hydraulic circuit install a proper box-end wrench onto the LEFT REAR wheel hydraulic circuit bleeder valve.
Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
With the left rear wheel hydraulic circuit bleeder valve tightened securely, after all air purged from the left rear hydraulic circuit, install a proper box-end wrench onto the RIGHT FRONT wheel hydraulic circuit bleeder valve.
Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
With the right front wheel hydraulic circuit bleeder valve tightened securely, after all air has been purged from the right front hydraulic circuit, install a proper box-end wrench onto the LEFT FRONT wheel hydraulic circuit bleeder valve.
Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
After completing the final wheel hydraulic circuit bleeding procedure, ensure that each of the 4 wheel hydraulic circuit bleeder valves are properly tightened.
Fill the brake master cylinder reservoir to the maximum-fill level with GM approved brake fluid from a clean, sealed brake fluid container.
Slowly depress and release the brake pedal. Observe the feel of the brake pedal.
If the brake pedal feels spongy, repeat the bleeding procedure again. If the brake pedal still feels spongy after repeating the bleeding procedure, perform the following steps:
21.1. Inspect the brake system for external leaks. Refer to Brake System External Leak Inspection.
21.2. Pressure bleed the hydraulic brake system in order to purge any air that may still be trapped in the system.
Turn the ignition key ON, with the engine OFF. Check to see if the brake system warning lamp remains illuminated.
Important: If the brake system warning lamp remains illuminated, DO NOT allow the vehicle to be driven until it is diagnosed and repaired.
If the brake system warning lamp remains illuminated, refer to Symptoms - Hydraulic Brakes

Feb 26, 2017 | GMC Cars & Trucks

19 Answers

'92 Jimmy rear brake failure


This will be a problem with either a collapsed brake line or the proportional valve. A collapsed line will not allow the proper flow and pressure to the brake assembly, and a faulty proportional valve will allow the pressure to bleed back into the system. You can test for these with a pressure tester. If the pressure is low but constant while the brake pedal is held down, it's a collapsed line. If the pressure drops off slowly while the brake pedal is held down, then it's the proportional valve.

Aug 15, 2008 | 1992 GMC Jimmy

1 Answer

Trying to take apart Front wheel cyclinder on 1995 Yamaha Big bear ATV, so it can be rebuilt


If it is like a car and you want the pistons out. Dump out brake fluid and put some type penetrating oil inside for a short time. Use compressed air to blow pistons out. Stay away from the ends of the cylinder so you don't get hit.

Mar 27, 2014 | 1995 Yamaha YFM350 Big Bear 4x4 ATV...

1 Answer

How do you bleed the brake system on 2003 suzki grand yitara 4x4 with abs brakes


The hydraulic brake system must be bled any time one of the brake lines is disconnected or air enters the system. There are two ways to bleed the system; pressure bleeding or manual bleeding. Both procedures will be given here, although pressure bleeding requires the use of some fairly expensive equipment (a pressure tank) and is seldom used. Both methods are equally effective.The correct bleeding sequence is: left front, right front, left rear, and right rear. On master cylinders equipped with a bleeder valve, bleed the master cylinder last.
PRESSURE BLEEDING
  1. Clean the top of the master cylinder, remove the cover, and attach the pressure bleeding adapter.
  2. The spring-loaded plunger on the front of the proportioning valve must be depressed while bleeding. Wire or tape can be wrapped around the valve to hold the plunger in.
  3. Check the pressure bleeder reservoir for correct pressure 20-29 psi (137-206 kPa) and fluid level, then open the release valve.
  4. Fasten a bleeder hose to the wheel cylinder or caliper bleeder nipple and submerge the free end of the hose in a transparent receptacle. The receptacle should contain enough brake fluid to cover the open end of the hose.
  5. Open the wheel cylinder or caliper bleeder nipple and allow the fluid to flow until all bubbles disappear and an uncontaminated flow exists.
  6. Close the nipple, remove the bleeder hose and repeat the procedure on the other wheel cylinders according to the sequence.


MANUAL BLEEDING(see Figures 1, 2 and 3)An alternative to the pressure method of bleeding requires two people to perform; one to depress the brake pedal and the other to open the bleeder nipples.
  1. Clean the top of the master cylinder, and then remove the cover and fill the reservoir with clean brake fluid.
  2. To prevent squirting fluid replace the cover.
  3. The spring-loaded plunger on the front of the proportioning valve must be depressed while bleeding. Wire or tape can be wrapped around the valve to hold the plunger in.
  4. Install a box end wrench on the left front bleeder screw.
  5. Attach a length of small diameter, clear vinyl tubing to the bleeder screw. Submerge the other end of the rubber tubing in a glass jar partially filled with clean brake fluid. Make sure the rubber tube fits on the bleeder screw snugly or you may be squirted with brake fluid when the bleeder screw is opened.
  6. Have your friend slowly depress the brake pedal. As this is done, open the bleeder screw half a turn and allow the fluid to run through the tube. Close the bleeder screw, then return the brake pedal to its fully released position.
  7. Repeat this procedure until no bubbles appear in the jar. Refill the master cylinder.
  8. Frequently check the master cylinder level during this procedure. If the reservoir runs dry, air will enter the system and the bleeding will have to be repeated.

Hope helps.

Sep 29, 2011 | 2000 Suzuki Grand Vitara

1 Answer

Put front brakes on hj kingswood bleed brake line .now brake peddle wont work


you need to bleed the brakes,starting from the wheel that's the fartherest away from your master cylinder. if you opened a bleeder valve when you replaced the front brakes,you've let air into the whole brake system.you will need 2 people to bleed the air out of the brakes.1to pump the pedal up for pressure and you to release the pressure of air from the bleeder valves on each wheel.start from the wheel that's the fartherest away from the brake master cylinder. passenger rear wheel.have someone pump the brake pedal up [pump3times]and hold pressure on the brake pedal,you open bleeder valve on the wheel to let the air out,or until the brake pedal goes to the floorboard[never let the person who is pumping the brake pedal to take the pressure off the brake pedal until you've tightened the bleeder valve closed.or else,you're waisting your time. you may have to bleed each wheel twice,or until you see clear brake fluid come out with no bubbles or spurting from each wheel. after you're done with passenger rear wheel,move to driverside rear wheel,then go to passenger front,then drivers front,which is last.when you replaced the brakes,you made a common mistake,you opened the brake lines,which let air into the brake system.it's a very common mistake so don't feel bad.just go back and bleed the brake system.after you do this,you will not make the same mistake again,i guarantee it. thank you for choosing fixya.com and if you need further assistance,please repost your question to fixya.com i'm usually here at least 12 hours a day to assist people for free.that's just me thanks!

Jan 26, 2011 | GMC C3500 Cars & Trucks

1 Answer

95 sierra k1500 low brake pedal and spongy have replaced master cylinder. calipers and rear wheel cylinders. bled brake several times. still the same


Sounds like you still have air in the system, you can get a brake bleeder with a one way check valve and put that in a bottle with a little brake fluid then when you pump the brakes it will allow fluid out without having to open and close the caliper fitting. just keep bleeding and I am sure you will get more air out. You might also try back bleeding where you pump brake fluid from the brake calipers to the master cylinder. Many shops do that now as it is more effective.

Dec 11, 2010 | 1995 GMC Sierra

1 Answer

How to bleed back brakes on a yamaha 450


1. Find the back brake reservoir.
2. Fill it full if under the minimum line.
3. Use a No.8 spanner to loosen the bleeder valve slightly.
4. Pump back brake several times until it becomes a bit hard and hold it there.
5. Open the bleeder valve letting the brke fluid out and at the same time press the brake till it stops.
6. Hold the brake where it stops and close the bleeder valve.
7. Do this 2 - 3 times to ensure there is no air bubbles in the system and make sure your reservoir are.alays topped up to maximum level.
8. Make sure bleeder valve is close tightly after beleeding process.
9. Off you go. Cheers

Nov 18, 2010 | 2008 Yamaha Gladiator SS

1 Answer

I took the front wheel off and now i have no brake pressure in front brake the brake just will not pump up


if you disconnected the brake line you need to bleed the brake system you have air in the brake system fill your resavour with brake fluid pump the front brake a few times and open the bleeder valve let air escape close the valve and only then reliese the brake do this a few times untell only brake fluid comes out good luck CJ

May 20, 2010 | 2008 Yamaha Royal Star Venture

1 Answer

No front brakes on yamaha atv


if they are drum brakes you may need to adjust the starwheels between the brake shoes. just like old car brakes

Jun 09, 2009 | 1995 Yamaha FZX 250 Zeal

2 Answers

I need to know how to bleed the brakes on a 1999 chevy blazer


Start from right rear, then, left rear, right front, left front. Fill master cylinder. Have helper sit in car, have helper hold brake pedal down. open bleed screw. fluid and air comes out. close screw. release brake pedal. Continue until no air comes out. Move to next wheel. Keep an eye on master cylinder fluid level after each wheel.

Mar 27, 2009 | 1999 Chevrolet Blazer

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