This manual covers the Clark GPX 30, GPX 55, DPX 30, and DPX 55 series forklifts. These industrial vehicles are engineered for reliability and efficiency in demanding operational environments. Their robust construction and advanced systems are designed to provide consistent performance across a wide range of material handling tasks. This comprehensive service, repair, and workshop manual provides detailed instructions for maintenance, diagnosis, and repair. It includes step-by-step procedures, troubleshooting guides, and detailed component breakdowns with zoomable illustrations and exploded views. This resource is essential for professional technicians, mechanics, workshops, and DIY users seeking to maintain and restore these Clark forklifts.