Detailed service and repair information for PC800-8R, PC800LC-8R, PC800SE-8R, PC850-8R, and PC850SE-8R hydraulic excavators. Covers maintenance procedures, troubleshooting, hydraulic systems, engine components, electrical systems, specifications, and repair processes. Ideal for technicians, mechanics, and equipment professionals looking for accurate technical data, diagnostics, and service insights for heavy construction excavators.