Brakes - Suzuki RM-Z250 Owner's Service Manual

3-8 TROUBLESHOOTING

BRAKES

Complaint
Insufficient brake
power
Brake squeaking
Excessive brake
lever stroke
Leakage of brake
fluid
Brake drags
Symptom and possible causes
• Leakage of brake fluid from hydraulic system
• Worn pads
• Oil adhesion of engaging surface of pads
• Worn disc
• Air in hydraulic system
• Not enough brake fluid in the reservoir
• Carbon adhesion on pad surface
• Tilted pads
• Worn pads
• Damaged wheel bearings
• Loosen front wheel axle or rear wheel axle
• Foreign material in brake fluid
• Clogged return port of master cylinder
• Air in hydraulic system
• Insufficient brake fluid
• Improper quality of brake fluid
• Insufficient tightening of connection joints
• Cracked brake hose
• Worn piston or seal
• Worn cylinder or cup
• Rusty part
• Insufficient brake lever or brake pedal pivot lubrica-
tion
Remedy
Repair or replace
Replace
Clean disc and pads
Replace
Bleed air
Replenish
Repair surface with
sandpaper
Correct pad fitting or
replace
Replace
Replace
Tighten to specified torque
Replace brake fluid
Disassemble and clean
master cylinder
Bleed air
Replenish fluid to specified
level; bleed air
Replace with correct fluid
Tighten to specified torque
Replace
Replace piston or seal
Replace cylinder or cup
Clean and lubricate
Lubricate