quannon 125 Workshop-manual : Page 133

          13. HYDRAULIC BRAKE

 SERVICE INFORMATION
 GENERAL INSTRUCTIONS
 · Drain the brake fluid from the hydraulic brake system before disassembly.
 · Do not allow any foreign matters entering the brake reservoir when filling the brake reservoir with
   brake fluid.
 · Be careful not to splash brake fluid on any coated surfaces and instrument covers to avoid
   damage.
 · Inspect the brake operation before riding.
 · Brake fluid will damage painted, coated surfaces and plastic parts. When working with brake fluid,
   use shop towels to cover and protect painted, rubber and plastic parts. Wipe off any splash of
   brake fluid with a clean towel. Do not wipe the motorcycle with a towel contaminated by brake
   fluid.
 · Make sure to use recommended brake fluid. Use of other unspecified brake fluids may cause
   brake failure.

 SPECIFICATIONS
                    Item                             Standard (mm)         Service Limit (mm)
 Brake disk thickness                                       4                      3.0
 Brake disk runout                                        0.15                     

 TORQUE VALUES
 Caliper holder bolt            2.43.0 kg-m
 Pad pin bolt                   1.52.0 kg-m
 Brake fluid tube bolt          3.04.0 kg-m
 Caliper bleed valve            0.40.7 kg-m
 Master cylinder holder bolt    0.81.2 kg-m



 TROUBLESHOOTING

     Loose brake lever
     · Air in hydraulic brake system
     · Brake fluid level too low
     · Hydraulic brake system leakage


     Tight brake lever
     · Seized piston
     · Clogged hydraulic brake system
     · Smooth or worn brake pad




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