Bleeding Front Brake; Front Caliper Bleeder Valve; Front Master Cylinder Reservoir - Buell XB9R 2003 Service Manual

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Bleeding Front Brake

NOTE
Hydraulic brake fluid bladder-type pressure equipment can be
used to fill the brake master cylinder through the bleeder
valve if master cylinder reservoir cover is removed to prevent
pressurization.
1. See Figure 1-6. Install end of plastic tubing over front cal-
iper bleeder valve; place other end in a clean container.
Stand motorcycle upright.
CAUTION
Cover molded-in-color surfaces and right handlebar
switches and use care when removing brake reservoir
cover and adding D.O.T. 4 brake fluid. Spilling D.O.T. 4
brake fluid on molded-in-color surfaces will result in cos-
metic damage. Spilling brake fluid on switches may ren-
der them inoperative.
2. Cover body surfaces, right handlebar switches and
instrument panel to protect from spillage.
3. See Figure 1-7. Remove two fasteners from front master
cylinder cover.
4. Add D.O.T. 4 BRAKE FLUID to master cylinder reser-
voir. Bring fluid level to within 1/8 in. (3.2 mm) of molded
boss inside front master cylinder.
NOTE
Do not reuse brake fluid.
5. Depress, release and then hold brake hand lever to build
up hydraulic pressure.
6. Open bleeder valve about 1/2-turn counterclockwise;
brake fluid will flow from bleeder valve and through tub-
ing. When brake lever has moved 1/2 to 3/4 of its full
range of travel, close bleeder valve (clockwise). Allow
brake lever to return slowly to its released position.
7. Repeat steps 5-6 until all air bubbles are purged.
8. Tighten front caliper bleeder valves (metric) to 36-60 in-
lbs (4-7 Nm).
9. Verify master cylinder fluid level as described in step 4.
10. Attach cover to front master cylinder reservoir and
tighten fastener to 9-13 in-lbs (1.0-1.5 Nm).
11. Remove cover from molded-in-color surfaces, right han-
dlebar switches and instrument panel.
8346
Figure 1-6. Front Caliper Bleeder Valve
8359
Figure 1-7. Front Master Cylinder Reservoir
2003 Buell XB9R: Maintenance 1-13