vitality 50 2t 4t 1 Manuel atelier : Page 214

          14. STEERING HANDLEBAR/FRONT WHEEL/FRONT
   BRAKE/FRONT SHOCK ABSORBER/FRONT FORK                                   VITALITY 50


 SERVICE INFORMATION
 SPECIFICATIONS
                      Item                        Standard (mm)        Service Limit (mm)
 Axle shaft runout                                                             0.2
                                      Radial                                   2.0
 Front wheel rim runout
                                       Axial                                   2.0
 Front shock absorber spring free length               214.7
 Brake disk thickness                                   4.0                    3.0
 Brake disk runout                                                            0.30
 Brake master cylinder I.D.                       12.70012.743                12.75
 Brake master cylinder piston O.D.                12.65712.684                12.64
 Brake caliper piston O.D.                        25.40025.405                25.45
 Brake caliper piston I.D.                        25.31825.368                25.30

 TORQUE VALUES
 Handlebar lock nut          5.06.0kgf-m         Front axle nut              5.07.0kgf-m
 Steering stem lock nut      0.5~1.3kgf-m        Brake caliper bolt          2.9~3.5kgf-m
 Steering top cone race      6.0~8.0kgf-m


 SPECIAL TOOLS
 Lock nut wrench                   F007
 Lock nut socket wrench            F001
 Race cone install                 F005



 TROUBLESHOOTING
 Hard steering (heavy)                           · Contaminated brake disk or disk pad
 · Excessively tightened steering stem top       · Worn brake bushing
   cone race                                     · Worn brake master cylinder piston oil seal
 · Broken steering balls                         · Clogged brake fluid line
 · Insufficient tire pressure                    · Deformed brake disk
 Steers to one side or does not track straight   · Unevenly worn brake caliper
 · Broken clutch weight spring                   Front wheel wobbling
 · Bent front fork                               · Bent rim
 · Bent front axle or uneven tire                · Loose front axle
 Poor brake performance                          · Bent spoke plate
 · Incorrectly adjusted brake                    · Faulty tire
 · Worn brake linings                            · Improperly tightened axle nut
 · Contaminated brake lining surface             Soft front shock absorber
 · Worn brake cam                                · Weak shock springs
 · Worn brake drum                               · Insufficient damper oil
 · Poorly connected brake arm                    Front shock absorber noise
 Poor brake performance (disk brake)             · Slider bending
 · Air in brake system                           · Loose fork fasteners
 · Deteriorated brake fluid                      · Lack of lubrication



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