Question about 1992 BMW K 75 S

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Abs brake no pedal

No brake pedal no visual signs of fluid on ground

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Hi, Anonymous for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary, transport your bike to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day.
http://forums.bmwmoa.org/showthread.php?70087-Brake-unable-to-pressurize-or-bleed-95-K75
Bleeding ABS Brakes BMW K75 K100 K1 K1100
http://www.k100.biz/pdf/OFF/K100_K75_2V_eng.pdf
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
http://www.bmw-motorrad.com/us/en/index.html?content=http://www.bmw-motorrad.com/us/en/services/manuals/manuals_main.html¬rack=1

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SOURCE: There is too much downward play (slack) in the

Hi Russ:

There is some adjustment at the threaded rod between the rear master cylinder and the brake pedal. Kinda hard to describe, but you loosen the locking nut and turn the rod a few turns to make it longer and raising the pedal...... BUT the brake switch is separate and too much adjustment will cause the ABS modulator pump to run... not a good thing. Basically, brake pedal height is non adjustable.... just have to get used to it.

Yes, the ABS pump runs whenever the brakes are applied. Your '04 1150GSA has the power assisted ABS brakes.

Posted on Sep 28, 2010

Testimonial: "Thank you for responding so quickly. I will make the suggested adjustments. By the way, your description is very clear to me. Excellent! God bless."

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Service code B1...what does it mean?


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Jun 21, 2011 | 2010 Honda Element

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The brake pedal pulses when stepping on the brake with no steering wheel shake on a 98 Ford F150, rear ABS only. The ABS differential sensor has already been replaced. What could be causing this?


have you checked the rear brake rotors/drums for being warped ??
normally vibrations while braking are.. through the steering wh = front
thruogh brake pedal/seat = rear

good luck

Jun 15, 2011 | 1998 Ford F150 Regular Cab

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Looking for a replacement part for My 1999 Ford F150 XL 4.6 L... With no luck. (I had a faulty front brake line - now after replacing it ..it will not bleed air or fluid) Disconnected the line from the...


YOU NEED A SCAN TOOL TO BLEED BRAKES.THE SCAN TOOL REACTIVATE HYDRALIC BRAKE MOTOR.YOU CAN RAISE VECHICLE WHEELS OFF GROUND SUPPORT SECURE SAFELY. ALLOW DRIVE WHEEL SPIN 5 MILES AN HOUR WHILE VECHICLE OFF GROUND THE WHEEL SENSORS WHILE WHEELS SPINNING WILL ACTIVATE ABS HYDRALIC MOTOR TO BUILD UP BRAKE FLUID PRESSURE.THEN LOWER VECHICLE TO GROUND.MAKE SURE MASTER CYLINDER BRAKE FLUID LEVEL CORRECT THEN BLEED BRAKES IF BRAKE DONT FEEL FIRM OR SOLID DONT DRIVE HAVE VECHICLE TOWED IN.GARAGE WILL HAVE TO USE SCANNER TO BLEED BRAKES.

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When driving my 2000 pontiac sunfire, I will use my brakes and sometimes they go to the floor and the car barely comes to a stop. Sometimes they work fine though. If I pump the brakes they work fine as...


try this ABS bleeding procedure:

WITHOUT TECH 1® OR T-100®

Do not place your foot on the brake pedal through this entire procedure unless specifically instructed to do so.
This method can only be used if the ABS warning lamp is not illuminated and not DTC's are present.
  1. Remove your foot from the brake pedal.
  2. Start the engine and allow it to run for at least 10 seconds while observing the ABS warning lamp.
  3. If the ABS warning lamp turned ON and stayed ON after about 10 seconds, the bleeding procedure must be stopped and a Tech 1® must be used to diagnose the ABS function.
  4. If the ABS warning lamp turned ON for about 3 seconds, then turned OFF and stayed OFF, turn the ignition OFF .
  5. Repeat Steps 1-4 one more time.
  6. The entire brake system should now be bled by following the guide or pressure bleeding procedure.

Manual Bleeding
See Figure 3
  1. Clean the master cylinder fluid reservoir cover and surrounding area, then remove the cover.
  2. Add fluid, if necessary to obtain a proper fluid level, then put the reservoir cover back on.
  3. Prime the ABS hydraulic modulator/master cylinder assembly as follows:
    1. Attach a bleeder hose to the rearward bleeder valve, then submerge the opposite hose end in a clean container partially filled with clean brake fluid.
    2. Slowly open the rearward bleeder valve.
    3. Depress and hold the brake pedal until the fluid begins to flow.
    4. Close the valve, then release the brake pedal.
    5. Repeat Steps 3b-3d until no air bubbles are present.
    6. Relocate the bleeder hose to the forward hydraulic modulator bleeder valve, then repeat Steps 3a-3e.

  4. Once the fluid is seen to flow from both modulator bleeder valves, the ABS modulator/master cylinder assembly is sufficiently full of fluid. However, it may not be completely purged of air. At this point, move to the wheel brakes and bleed them. This ensures that the lowest points in the system are completely free of air and then the assembly can purged of any remaining air.
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Fig. Fig. 3: ABS hydraulic modulator/master cylinder bleeder locations

  1. Remove the fluid reservoir cover. Fill to the correct level, if necessary, then fasten the cover.
  2. Raise and safely support the vehicle.
  3. Proceed, as outlined in the following steps, to bleed the wheel brakes in the following sequence: right rear, left rear, right front, then left front.
    1. Attach a clear plastic bleeder hose to the bleeder valve at the wheel, then submerge the opposite hose end in a clean container partially filled with clean brake fluid.
    2. Open the bleeder valve.
    3. Have an assistant slowly depress the brake pedal.
    4. Close the valve and slowly release the release the brake pedal.
    5. Wait 5 seconds.
    6. Repeat Steps 7a-7e until the brake pedal feels firm at half travel and no air bubbles are observed in the bleeder hose. To assist in freeing the entrapped air, tap lightly on the caliper or braking plate to dislodge any trapped air bubbles.

  4. Repeat Step 7 for the remaining brakes in the sequence given earlier.
  5. Carefully lower the vehicle.
  6. Remove the reservoir cover, then fill to the correct level with brake fluid and replace the cap.
  7. Bleed the ABS hydraulic modulator/master cylinder assembly as follows:
    1. Attach a clear plastic bleeder hose to the rearward bleeder valve on the modulator, then submerge the opposite hose end in a clean container partially filled with clean brake fluid.
    2. Have an assistant depress the brake pedal with moderate force.
    3. Slowly open the rearward bleeder valve and allow the fluid to flow.
    4. Close the valve, then release the brake pedal.
    5. Wait 5 seconds.
    6. Repeat Steps 11a-11e until no air bubbles are present.
    7. Relocate the bleeder hose to the forward hydraulic modulator bleeder valve, then repeat Steps 11a-11f.

  8. Carefully lower the vehicle, then check the brake fluid and add if necessary. Don't forget to put the reservoir cap back on.
  9. With the ignition turned to the RUN position, apply the brake pedal with moderate force and hold it. Note the pedal travel and feel. If the pedal feels firm and constant and the pedal travel is not excessive, start the engine. With the engine running, recheck the pedal travel. If it's still firm and constant and pedal travel is not excessive, road test the vehicle and make sure the brakes are operating properly.
  10. If the pedal feels soft or has excessive travel either initially or after the engine is started, the following procedure may be used:
    1. With the Tech 1® scan tool, Release then Apply each motor 2-3 times and cycle each solenoid 5-10 times. When finished, be sure to Apply the front and rear motors to ensure the pistons are in the upmost position. DO NOT DRIVE THE VEHICLE.
    2. If a Tech 1® scan tool is not available, remove your foot from the brake pedal, start the engine and allow it run for at least 10 seconds to initialize the ABS. DO NOT DRIVE THE VEHICLE. After 10 seconds, turn the ignition OFF . The initialization procedure most be repeated 5 times to ensure any trapped air has been dislodged.
    3. Repeat the bleeding procedure, starting with Step 1.

  11. Road test the vehicle, and make sure the brakes are operating properly.

Oct 12, 2010 | 2000 Pontiac Sunfire

1 Answer

There is too much downward play (slack) in the rear brake pedal before the brakes engage. Is there a way to adjust that? There is sufficient pad left. All fluid levels are correct and the fluid is fresh....


Hi Russ:

There is some adjustment at the threaded rod between the rear master cylinder and the brake pedal. Kinda hard to describe, but you loosen the locking nut and turn the rod a few turns to make it longer and raising the pedal...... BUT the brake switch is separate and too much adjustment will cause the ABS modulator pump to run... not a good thing. Basically, brake pedal height is non adjustable.... just have to get used to it.

Yes, the ABS pump runs whenever the brakes are applied. Your '04 1150GSA has the power assisted ABS brakes.

Sep 27, 2010 | 2004 BMW R 1150 GS Adventure

2 Answers

Brake light on the dash board goes on while pushing the brakes


The brake light coming on signifies a low level of brake fluid in the resevoir.Because it only comes on when you push the pedal it's borderline on level. It needs to be topped up and check under the car for leaks. A leaking line is the most common cause of brake fluid. Have you noticed a change in the feel of the pedal lately? Has it gone spongy or hard? Either are a sign of leaking brake lines. Hope this helps.

Dec 29, 2009 | 2003 Lincoln Town Car

1 Answer

Brake pedal goes too far to the floor on initial application, pumping brings the pedal up, bled several times


Sounds like an internal leak in the master cylinder, an external brake fluid leak (such as a leaking brake line), or extreme misadjustment or binding of the calipers or drums. Any could be the case, and you can eliminate the last 2 rather easily. Do you see any sign of fluid coming from any of the brake lines? If not, move to adjustments. Check the calipers for bound up caliper pins and if equiped with rear drum brakes, the adjustment and condition of the rear shoes. After that, go right for the throat and replace the master cylinder. Be sure to bench bleed it before you install it, and if you have ABS, make sure you also bleed the ABS system, OR if you can't bleed the ABS system have the new master cylinder ready to install, and remove the brake lines as quickly as possible from the old master and have a friend hold thier fingers over the ends of the lines. I do this quite a bit at my shop, and it's VERY rare that I actualy need to bleed the ABS after replacing a master cylinder if little to no air gets in the brake lines.

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2001 dodge 2500 very little brake pedal. brake fluid disappears


You Must determine that Master Cylinder is NOT LEAKING into the Brake BOOSTER this is a Leak that CANNOT be Detected Easyly, If not Rear Brake SHOES Worn OUT Can CAUSE LOW Brake Pedal Problem

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1 Answer

Brake pedal pushes to the ground...97 auto hyundai excel


Make sure your front brake calipers and rear wheel cyls. have no signs of brake fluid leaks, and brake pads and shoes are in good shape, if ok most likely problem is the master cyl. needs replacement.

Nov 25, 2008 | 1994 Hyundai Excel

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