KYMCO Downtown 125i 2009 Service Manual page 214

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16. REAR BRAKE/REAR FORK/REAR
WHEEL/REAR SHOCK ABSORBER
SERVICE INFORMATION
GENERAL INSTRUCTIONS
• When performing the services stated in this section, the engine and exhaust muffler must be cold to avoid
scalding.
• During servicing, keep oil or grease off the brake pads and brake disk.
SPECIFICATIONS
Rear brake disk thickness
Rear brake caliper piston O.D.
Rear brake caliper cylinder I.D.
Rear brake master cylinder I.D.
Rear brake master cylinder piston O.D.
TORQUE VALUES
Exhaust muffler lock bolt
Exhaust muffler pipe nut
Rear axle nut
Rear shock absorber lower mount bolt
Rear shock absorber upper mount bolt
Rear brake caliper holder bolt
TROUBLESHOOTING
Rear wheel wobbling
• Bent rim
• Faulty tire
• Axle not tightened properly
Soft rear shock absorber
• Weak shock absorber spring
• Damper oil leaks
Rear wheel noise
• Worn rear wheel axle bearings
• Worn rear fork bearings
• Deformed rear fork
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Item
35 N-m/3.5
20 N-m/
120 N-m/
40N-m/
40N-m/
27 N-m/
Standard (mm)
25.33~25.36
25.4~25.45
12.7~12.74
12.65~12.68
kgf-m
2 kgf-m
12 kgf-m
4 kgf-m
4 kgf-m
2.7 kgf-m
Poor brake performance
• Air in brake system
• Deteriorated brake fluid
• Contaminated brake pad surface
• Worn brake pads
• Clogged brake fluid line
• Deformed brake disk
• Unequal worn brake caliper
DOWNTOWN 125i
4.9~5.1
16-2