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Frequently Asked Questions

What causes a low pedal after brake service?

Bendix :: Tech Corner : Tech Bulletins / FAQ
The most common reason for low pedal after brake service is improper adjustment of the rear drum/shoe or disc brake assembly.

What causes a spongy pedal after the brake system has been bled several times?

Bendix :: Tech Corner : Tech Bulletins / FAQ
A spongy pedal is an indication that air is still present in the brake system. Follow proper brake bleeding procedures and sequences. Use a plastic mallet to lightly tap hydraulic components to help free entrapped air bubbles from inner walls of calipers and wheel cylinders.

Why do I get ABS action at low speeds after brake service was performed?

Bendix :: Tech Corner : Tech Bulletins / FAQ
The most common cause of ABS activation at low speeds where an intermittent WSS (Wheel Speed Sensor) signal is present is metal filings on the magnetic section of the WSS. Carefully inspect the tone rings with a magnifying glass for cracks and chips.

Why use vacuum to pull the brake pedal?

Towing World Official Website
Vacuum pulls down the brake pedal gradually, with easy pressure, the same way you apply your brakes when driving. We use finesse pressure on the brake pedal because we activate the power assist. Our system pulls the pedal with only enough strength to halt the vehicle, just like you do when you drive. We never lock brakes, no other braking system does this.

When i step on the brake pedal, the brake lights don't go out when i release it, why?

faq
Just so you know, the bro's at www.hondachopper.com combined have hundreds of years experience with the sohc honda 750cc motorcycle. and include several custom shop owners and private customizers among their membership. A pretty cool place to hang out!

What causes brake dust?

Powerstop Brakes Ltd
lower cost brake pads wear or carbonise at temperatures found in braking, dust is released. Many pad manufacturers use materials that cause dust in their pads. EBC Greenstuff contains NONE of these, hence pads run cleaner. Greenstuff pads do not surface carbonise until 900-1000°F so in normal use dust is almost entirely eliminated. Any dust that is generated in performance use is easily wiped / washed away without damage to alloy wheels.

What causes brake squeal?

Powerstop Brakes Ltd
On the occasions it occurs it is usually in older systems (say pre 1990). It can be caused by new pads being overheated when new - the binding resins in the friction compound lift to the surface, glaze the pad and the points of squeal can be seen as polished areas. Remedy - deglaze the pad by flatting off say 0.5-1.00mm on a medium/fine abrasive paper. Then clean the disc similarly (or use wire wool/brake cleaner fluid) with a stroking motion following the 'grain' of the disc.

What causes a low reading when using an ear thermometer?

Thermometry - FAQ's and What you should know about fevers
The temperature taking technique is the general cause for a low reading. We recommend that you practice using the ear thermometer on yourself and other family members when you are healthy. This will improve your technique and you will feel more confident of the measurement you take when someone is ill. Completely read the instruction manual. A low reading can be caused by an ear infection.

What causes low potassium? Can the Rice Diet cause this?

Rice Diet - The Residential Clinic
There are conditions that can cause low potassium. The Rice Diet is not one of them. We have not seen low potassium in a patient on the Rice Diet who was not either taking diuretics or taking too many laxatives.

What Causes low back pain?

Parnell Family Chiropractic -
The spinal cord is protected by the vertebrae, which are made of bone. Between each vertebra are soft discs with a ligamentous outer layer. These discs function as shock absorbers to protect the vertebra and the spinal cord. Many of the problems that cause back pain are the result of herniation and degeneration of the intervertebral disc. Degeneration is a process where wear and tear causes deterioration of the disc.

When I use my brakes, the car shakes and the brake pedal pulsates. Are my brakes going out?

Heinold & Feller Tire Co. & Lawn Equipment - FAQs
Possibly the brake rotors or drums are warped causing the vibration/pulsation. This can increase your stopping distance. The brakes should be inspected as soon as possible. Stop in today! There are a couple of possibilities. The serpentine belt could be bad, the belt tensioner could be worn out, or the noise could be coming from the water pump or the alternator. Please bring your vehicle in for an inspection right away. Many vehicles now have a cabin filter.

gt; sound that can be felt on the brake pedal. Is this a power assist servo problem?

BMW FAQ.12
Just wish to confirm that my 750iL has had this same noise during my entire ownership. I tried three Dealerships and the gurus at the Oktoberfest without finding an explanation... I figure it has something to do with the servotronic steering or perhaps the braking system (pressure regulator?). I too feel it in the pedal. gt; From: Guy Therien <Guy_Therien_at_ccm2.hf.intel.com> > Subject: Brake Pressure Warning Message > gt; symptoms, the brakes work fine.

Why does the clutch pedal sit about 1" higher than the brake pedal?

Nareman Virk asks why his clutch pedal sits higher than the brake pedal and squeeks when pressed. He also says that the warning light for low brake fluid keeps coming on. The brake and clutch fluid are shared. The brake fluid drains from the bottom of the tank and the clutch from about 1/2 way down. This ensures that if there is a fluid leak in the clutch then the brakes will always work.

What causes the excesive wear on a Tiger's rear brake pad ?

FAQ
Occasionally, a few Tigers comes from the factory with too little free play at the rear brake lever. When the bike is cold, the lever appears to have enough freeplay. However, when the pads/discs/fluid warms after a few applications, the fluid expands, pushes the master cylinder piston back, which uses up all the free play... . The rear master cylinder piston can't move any further, so the caliper piston obligingly moves for it, and the pads start dragging on the disc.

When standing on the brake pedal, my foot slowly sinks to the floor? What's wrong?

You either have a leak or your master cylinder is shot. Don't bother trying to rebuild the master cylinder, unless you have access to high precision tools. Mexican made replacements tend not to last long. Get the German OEM ones or the VW one (same thing, more $$$$). Incorrect cylinders installed (17mm vs 14 mm, they look very similar but make a 40% in brake pressure!) A high quality Lithium based grease with Molibdenum disulfide (MoS2) (all VW shops have switched to this).

Occasionally at low speeds I hear a click form the front end when I brake, is something wrong?

Hornet's Nest Frequently Asked Questions.
You are most likely to hear a 'click' if you have wheeled the bike backwards slowly and stopped with the front brake, then wheeled forward and braked again with the front. The 'click' is simply the calipers and discs shifting slightly on their mountings and is perfectly normal. Some people have rushed back to the dealer thinking their steering bearings are loose or playing up. If in doubt, ask your dealer to check the bike out.

Where should my foot go on the pedal?

Mountain Unicycling Frequently Asked Questions
For maximum foot stability your foot should be centered over the pedal (the arch of your foot is over the pedal). If you are wearing boots, you can place the heel of the boot against the pedal, giving you excellent stability. The best place around to research, and purchase unicycling equipment is the Unicycle Source, http://www.unicycle.com/ The American version of this site is run by John Drummond and family.

Do I always have to pedal?

ecoZen Bike FAQ 1
Not really. You do have a choice. Although capable of pushing you along without help, electric bikes are designed to work with your pedalling. When you add light pedalling, you'll notice quicker acceleration, faster top speeds, and better pulling power. The average person who rides at 10 km/h on a standard bike can do 15-20 km/h on an e-bike with the same effort.
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