Q: How to inspect and replace the rear brake shoes on Nissan Xterra's brake system?A: Whenever brake shoes are replaced, return and hold-down springs should be replaced due to continuous heating/cooling cycles they experience, causing them to lose tension and potentially accelerating shoe wear. Loosen wheel lug nuts, raise the rear of the vehicle, support it on jackstands, block front wheels, and remove wheels. Release parking brake and remove brake drums; if shoes have worn into the drum, use access plug from backing plate and adjust as necessary. If rusted, employ appropriate bolts to assist removal. All four rear brake shoes must be replaced simultaneously, but only work on one brake assembly at a time. Before disassembly, clean brake assembly with brake system cleaner. For 2WD Frontier models, follow a specific sequence from unhooking lower return spring to ensuring brake assembly appears correctly. For Xterra or 4WD Frontier models, there's a distinct sequence starting from unhooking the lower return spring to the correct brake assembly appearance. For Pathfinder models, follow an order starting with the removal of lower return spring to the appropriate brake assembly appearance. Before reinstalling drum, check for any defects; if hard spots can't be removed or other conditions persist, have the drum resurfaced. If the wear is extensive, new drums might be needed; if not resurfacing, remove surface glaze. Adjust the brake system appropriately so the drum fits and shoes don't drag. Mount wheel, adjust lug nuts, and lower vehicle. Make several stops in both directions and operate the parking brake for adjustment. Finally, ensure the brakes operate correctly before regular driving.