2006 Buell Lightning: Maintenance 1-17
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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 1-7. With motorcycle in upright position,
install end of plastic tubing over front caliper bleeder
valve; place other end in a clean container.
CAUTION
D.O.T. 4 brake fluid will damage painted and molded in
colored surfaces it comes in contact with. Always use
caution and protect surfaces from spills whenever brake
work is performed. Failure to comply can result in cos-
metic damage. (00239a)
2. Cover body surfaces, right handlebar switches and
instrument panel to protect from spillage.
3. See Figure 1-8. 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. Slowly depress and release hand lever several times to
build up hydraulic pressure, then hold brake hand lever in
the depressed position.
6. While holding brake hand lever in the depressed posi-
tion, open bleeder valve about 1/2-turn counterclockwise.
Brake fluid will flow from bleeder valve and through tub-
ing into clean container. When brake lever has moved 1/2
to 3/4 of its full range of travel, close bleeder valve (clock-
wise). 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 valve (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 fasteners 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.
Figure 1-7. Front Caliper Bleeder Valve
Figure 1-8. Front Master Cylinder Reservoir
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