Buell 2009 XB Series Service Manual page 119

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sm04577
Figure 2-36. Master Cylinder/Reservoir Banjo Bolt
sm04578
Figure 2-37. Handlebar Clamps
MASTER CYLINDER/RESERVOIR: REPAIR
Disassembly
1. Remove reservoir cover by removing cover fasteners.
2. Drain and discard remaining brake fluid according to local
laws.
3. Remove rubber boot and discard.
4. See Figure 2-38. Depress piston assembly (1) and remove
internal circlip (2) and discard.
5. Remove piston and spring from master cylinder and dis-
card.
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1
2
1. Piston assembly
2. Circlip
Figure 2-38. Piston Assembly in Master Cylinder
Cleaning and Inspection
Use denatured alcohol to clean brake system components.
Do not use mineral-based solvents (such as gasoline or
paint thinner), which will deteriorate rubber parts even
after assembly. Deterioration of these components can
cause brake failure, which could result in death or serious
injury. (00291a)
Compressed air can pierce the skin and flying debris from
compressed air could cause serious eye injury. Wear
safety glasses when working with compressed air. Never
use your hand to check for air leaks or to determine air
flow rates. (00061a)
1. Clean all parts with denatured alcohol or D.O.T. 4 brake
fluid.
NOTE
Do not contaminate with mineral oil or other solvents.
2. Wipe dry with a clean, lint free cloth.
3. See Figure 2-39. Blow out the fluid passages and piston
bore with compressed air.
NOTE
See Figure 2-40. Do not use a wire or similar instrument to
clean the drilled passages (1) in the bottom of the reservoir.
4. Inspect the piston bore in master cylinder housing. Replace
the housing if any scoring, pitting or corrosion is present.
2009 XB Service: Chassis 2-41