13. REAR WHEEL/SWING ARM/ HYDRAULIC BRAKE Mongoose/KXR 90/50 Check the swing arm side play by moving it from side to side. If side play noticeable, check the inner collar, bushing and thrust cover. Check the swing arm vertical movement by moving it up and down. If vertical movement is tight, binding or rough, to check the inner collar, bushing and thrust cover. INSPECTION Inspect the shock absorber rod. Replace the shock absorber assembly if bends or damage. Inspect the shock absorber. Replace the shock absorber assembly if oil leaks Inspect the spring. Replace the shock absorber assembly if fatigue. Move the spring up and down. 13-11