2003 Buell XB9R: Chassis
2-23
HOME
FRONT BRAKE MASTER CYLINDER AND HAND LEVER 2.10
REMOVAL
NOTE
Steps 1 is not required for removing the master cylinder
assembly from the handlebars. Do not disassemble master
cylinder unless problems are experienced.
1.
Drain brake fluid into a suitable container. Discard used
fluid according to local laws.
a. Install a length of plastic tubing over caliper bleeder
valve. Place free end in a suitable container.
b.
Open bleeder valve (metric) about 1/2-turn.
c.
Pump brake hand lever to drain brake fluid.
d.
Tighten bleeder valve to 36-60 in-lbs (4-7 Nm).
CAUTION
Damaged banjo bolt seating surfaces will leak when
reassembled. Prevent damage to seating surfaces by
carefully removing brake line components.
2.
See
Figure 2-35.
Remove the banjo bolt (12) (metric)
and two copper washers (14) to disconnect brake line
(13) from master cylinder (4). Discard copper washers.
3.
Unplug terminal (11) to detach brake lamp switch (10).
NOTE
The individual parts of the brake lamp switch are not service-
able. Replace switch upon failure.
4.
Remove mounting clamp fasteners (5) (metric) to detach
master cylinder reservoir (4) from handlebar.
DISASSEMBLY
Brake Hand Lever
1.
See
Figure 2-35.
Remove pivot bolt nut (8) (metric) and
pivot bolt (15) from hand lever pivot.
2.
Detach front brake hand lever assembly (7) from hand
lever pivot.
3.
Detach front brake lamp switch (10) by removing the
switch fastener (9).
Front Master Cylinder
1.
See
Figure 2-35.
Remove master cylinder cover (2) by
removing cylinder cover fasteners (1).
2.
Discard excess brake fluid.
3.
See
Figure 2-34.
Remove rubber boot (1) and discard.
4.
See
Figure 2-33.
Depress piston assembly (1) and
remove internal snap ring (2) and discard.
5.
See
Figure 2-35.
Remove piston assembly (6) from front
master cylinder reservoir (4) and discard.
CLEANING AND INSPECTION
1
1
WARNING
1
WARNING
Clean brake system components using denatured alco-
hol. Do not use mineral-base cleaning solvents, such as
gasoline or paint thinner. Use of mineral-base solvents
causes deterioration of rubber parts that continues after
assembly. This may result in improper brake operation
which could result in death or serious injury.
1.
Clean all parts with denatured alcohol or D.O.T. 4
BRAKE FLUID. Do not contaminate with mineral oil or
other solvents. Wipe dry with a clean, lint free cloth. Blow
out drilled passages and bore with a clean air supply. Do
not use a wire or similar instrument to clean drilled pas-
sages in bottom of reservoir.
2.
Inspect piston bore in master cylinder housing for scor-
ing, pitting or corrosion. Replace housing if any of these
conditions are found.
3.
Inspect outlet port that mates with brake line fitting. As a
critical sealing surface, replace housing if any scratches,
dents or other damage is noted.
Figure 2-33. Piston Assembly in Master Cylinder
8424
2
1.
Piston assembly
2.
Snap ring
1
Summary of Contents for XB9R 2003
Page 2: ...1 2 Edit Me Printed June 5 2002 12 26 pm ...
Page 35: ...D 2 2003 Buell XB9R Appendix D HOME Figure D 2 Rear Brake Systems Top View b1115xbx ...
Page 36: ...2003 Buell XB9R Appendix D D 3 HOME Figure D 3 Rear Brake Systems Left Side View b1116xcx ...
Page 47: ...D 14 2003 Buell XB9R Appendix D HOME NOTES ...
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Page 299: ...4 2 2003 Buell XB9R Fuel System HOME NOTES ...
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