12. FRONT WHEEL/FRONT BRAKE/FRONT SUSPENSION/STEERING SYSTEM Mongoose/KXR 90/50 INSPECTION Measure the wheel run out. Replace wheel or check bearing play if out of specification Rim run out limits: Vertical: 2.0mm Lateral: 2.0mm Inspect the front wheel hub. Replace it if cracks or damage. Inspect the front brake drum. Measure the front brake drum I.D. Service limits: 84mm Keep oil or grease off the brake drum. Turn the inner race of each bearing with your finger to see if they turn smoothly and quietly. Also check if the outer race fits tightly in the hub. Replace the bearings if the races do not turn smoothly, quietly, or if they fit loosely in the hub. 12-5