Hydraulic Brake - KYMCO Mongoose 90 Service Manual

13
. REAR WHEEL/SWING ARM/

HYDRAULIC BRAKE

TROUBLESHOOTING
Rear wheel wobbling
• Bent rim
• Faulty tire
• Axle not tightened properly
Soft rear shock absorber
• Weak shock absorber spring
• Faulty damper
Loose brake lever (Disk Brake)
• Air in hydraulic brake system
• Brake fluid level too low
• Hydraulic brake system leakage
Hard braking (Disk Brake)
• Seized hydraulic brake system
• Seized piston
Brake noise (Disk Brake)
• Contaminated brake pad surface
• Excessive brake disk run out
• Incorrectly installed caliper
• Brake disk or wheel not aligned
Poor brake performance (Disk Brake)
• Air in brake system
• Deteriorated brake fluid
• Contaminated brake pads and brake disk
• Worn brake pads
• Worn brake master cylinder piston oil seal
• Clogged brake fluid line
• Deformed brake disk
• Unevenly worn brake caliper
13-3
Poor brake performance (Drum Brake)
• Brake not adjusted properly
• Worn brake linings
• Worn brake shoes at cam contacting area
• Worn brake cam
• Worn brake drum
Tight brake lever (Disk Brake)
•Seized piston
•Clogged hydraulic brake system
•Smooth or worn brake pad
Poor brake performance (Disk Brake)
Contaminated brake pad surface