BMW R1100 Spezifikationen PDF herunterladen (Seite 20)

more fluid to the reservoir and start this cycle again. Memorize step #3.

The brake nipple is located on the caliper body. Stand to the left side of the bike and look at

the front wheel. The tire is mounted on the rim. The brake disc (rotor) is smaller than the rim,

made of shiny metal with holes bored in it. At the one o'clock position there is a black metal

caliper with the word "BREMBO" in metallic relief on the body. A rubber hose containing the

brake fluid is attached to the top of the caliper. Also on the top of this black caliper is a rubber

cap that covers the metal nipple. The nipple sticks up, has a hole in its center, is smooth and

round at the top and the base is a six-sided bolt. Remove the rubber cap and clean the nipple

before using it.. When the nipple bolt is rotated (looking down at it) counter-clockwise it

becomes loose and brake fluid may flow out of the brake system through the center hole.

Position the bike and secure the handle bar so that the handle-bar reservoir is level with the

ground or slightly tilted so that the hose connection is the lowest point. Using an 11mm box

end wrench or socket to open the nipple may help prevent problems if it is very tight. Start on

the left front caliper (furthest from the reservoir). Open the reservoir top.

Step one: Attach the Mityvac suction hose to the nipple and pump the tool to create suction.

Make certain the reservoir on the tool is attached and the tool is functioning; and you might

even try reading the manual for the tool. Pump the tool to create a vacuum. Consider the

following: You may wish to seal the nipple-hose connection area with grease so that ambient

air is not sucked into the hose. In this way, if there was no air in the brake system there will be

no air in the spent fluid cup. Many mechanics don't seal the nipple-hose connection with

grease because air in the spent fluid does not affect the bleeding procedure, they do not mind

seeing the air bubbles because the spent fluid will be discarded and they do not check it for

bubbles, and therefore they consider greasing the nipple as an unnecessary bother.

Step two: Slowly and carefully open the nipple and observe the fluid level in the bike reservoir

carefully. When you look at the hose that is attached to the nipple you will see bubbles in the

hose. The bubbles are from air being sucked into the line around the nipple area as well as

any air that may be in the system. Step three: When the amount of fluid in the reservoir

decreases by 50%, turn off the flow by tightening the nipple (clockwise). As you are tightening

the nipple, the Mityvac must still contain some vacuum , some fluid flow must be taking place

so that air can not enter the system, and the reservoir must contain some fluid. Step four:

Add brake fluid when 50% or more of the fluid has been vacuumed (drained, suctioned) from

the bike reservoir. Repeat these four steps until the fluid appears clear in the tube leading to

the Mityvac reservoir jar. When the fluid is clear, tighten the nipple and replace the rubber cap.

Move to the right front caliper of the bike and repeat the four steps until the fluid appears clear

again. When finished with the right side, replenish the brake reservoir and replace the cap

and screws. Fluid should be at the top of the reservoir site window.

Move to the rear disk and bleed the rear reservoir from the nipple on the rear caliper until the

fluid is clear. Replace the rubber cap on the nipple, replenish the reservoir and replace the

cap on the rear.

After the fluid has been completely replaced and all nipples are tight, check that the front and

rear reservoirs are filled and secure. Slowly pump the front brake lever, then pump the foot

pedal until there is a solid feel. Continue pumping the brakes for a few minutes, then recheck

the reservoir level and refill if necessary.

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