Item Standard (mm) Service Limit (mm)Rear wheel rim runout 2.0
Rear brake drum I.D. 110 111
Rear brake lining thickness 6.4 2.0
Rear shock absorber spring free length 209
TORQUE VALUES
Rear axle nut 11.0_ 13.0kgf-mRear shock absorber upper mount bolt 3.5_ 4.5kg-mRear shock absorber lower mount bolt 2.4_ 3.0kg-m
TROUBLESHOOTINGRear wheel wobbling• Bent rim• Faulty tire• Axle not tightened properly
Soft rear shock absorber• Weak shock absorber spring
Poor brake performance• Brake not adjusted properly• Contaminated brake linings• Worn brake linings• Worn brake shoes at cam contacting area• Worn brake cam• Improper engagement between brake arm
and wear indicator plate
15. REAR WHEEL/REAR BRAKE/REARSHOCK ABSORBER
15-3
VITALITY 50
REAR WHEELREMOVALRemove the exhaust muffler. (13-10)
Remove the rear axle nut to remove the rearwheel.
INSPECTIONMeasure the rear wheel rim runout.Service Limits:Radial : 2.0mm replace if overAxial : 2.0mm replace if over
INSTALLATIONInstall the rear wheel and apply SAE30#engine oil to the axle threads. Then, tightenthe rear axle nut.Torque values:Rear axle nut: 11.0_ 13.0kg-m
Rear Axle Nut
Rear Axle Nut
15. REAR WHEEL/REAR BRAKE/REARSHOCK ABSORBER
15-4
VITALITY 50
REAR BRAKERemove the rear wheel. (15-3)
Inspect the rear brake drum.Measure the rear brake drum I.D.Service Limit: 95.5mm replace if over
BRAKE LINING INSPECTIONMeasure the brake lining thickness.Service Limit: 2.0mm replace if below
REAR BRAKE DISASSEMBLYRemove the rear brake adjusting nut anddisconnect the rear brake cable.Remove the rear brake shoes.
Adjusting Nut
Brake Arm Brake Shoes
Keep oil or grease off the brake linings.°Ø
15. REAR WHEEL/REAR BRAKE/REARSHOCK ABSORBER
15-5
VITALITY 50
Remove the brake cam bolt to remove thebrake arm, wear indicator plate and felt seal.Remove the brake arm.
REAR BRAKE ASSEMBLYApply grease to the anchor pin and brakeshoe moving parts.Apply grease to the brake cam and install it.
Apply engine oil to the felt seal and installit to the brake cam.Install the wear indicator plate.
Install the brake arm onto the brake cam.
Install and tighten the brake arm bolt.Install the brake arm return spring.Install the brake shoes.
Align the wide tooth of the wearindicator plate with the wide groove onthe brake cam.
°Ø
Brake Arm Bolt Wear Indicator Plate
Brake Arm Brake Cam
Grease
Brake Arm
Punch MarkWear Indicator Plate
Align the punch mark on the brake armwith the scribed line on the brake cam.
°Ø
15. REAR WHEEL/REAR BRAKE/REARSHOCK ABSORBER
15-6
VITALITY 50
Install the brake arm pin.Connect the brake cable and install theadjusting nut.
Install the rear wheel. (15-3)Adjust the rear brake lever free play.(3-2)
REAR SHOCK ABSORBERREMOVALRemove the rear body cover. (13-6)Remove the air cleaner case. (5-2 or 5-7)
Remove the rear shock absorber upper andlower mount bolts to remove the rear shockabsorber.
INSTALLATIONInstall the rear shock absorber.Install the rear shock absorber upper mountbolt and then install the lower mount bolt.Torque:Upper Mount Bolt: 3.5_ 4.5kgf-mLower Mount Bolt: 2.4_ 3.0kgf-m
