Bleeding Front Brake - Buell 2007 FIREBOLT 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 1-8. 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 body panel
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 cosmetic dam-
age. (00239a)
2. Cover body surfaces, right handlebar switches and
instrument panel to protect from spillage.
3. See Figure 1-9. 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.
1-18 2007 Buell Firebolt: Maintenance
8346
Figure 1-8. Front Caliper Bleeder Valve
8359
Figure 1-9. Front Master Cylinder Reservoir