Inspection; Brake Master Cylinder Assembly; Installation - Yamaha RS90K Service Manual

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a
4-41
BRAKE

INSPECTION

1. Inspect:
• Master cylinder 1
Wear/scratches → Replace the master cylin-
der assembly.
• Master cylinder body 2
Cracks/damage → Replace.
• Oil delivery passage (master cylinder body)
Blow out with compressed air.
2. Inspect:
• Master cylinder kit 1
Scratches/wear/damage → Replace as a set.

BRAKE MASTER CYLINDER ASSEMBLY

WARNING
• All internal parts should be cleaned only with
new brake fluid.
• Internal parts should be lubricated with brake
fluid when installed.
Recommended brake fluid:
DOT 4
• Replace the piston seals and dust seals
whenever a caliper is disassembled.

INSTALLATION

1. Install:
• Brake hose
CAUTION:
When installing the brake hose onto the brake
master cylinder, make sure that the brake pipe
touches the projection a as shown.
Union bolt (brake hose):
30 Nm (3.0 m · kg, 22 ft · lb)
POWR
TR

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