13. REAR WHEEL/SWING ARM/ HYDRAULIC BRAKE Mongoose/KXR 90/50 INSPECTION Roll the axle on a flat surface to inspect the pivot shaft. Replace it if bends. Do not attempt to straighten a bent axle. Collar Chain Guide Inspect the swing arm. Replace it if crack, bend or damage. Inspect the thrust cover, chain guide, collar and bush. Replace them if wear or damage. Thrust Covers Bushes Thrust Covers Inspect the drive chain stiffness. Clean and lubricate or replace it if stiff. CLEAN Place it in kerosene, and brush off as much dirt as possible. Then remove the chain from the kerosene and dry the chain. 13-13