1993 Clark GPX 30, GPX 35, GPX 40, GPX 45, GPX 50, GPX 55, DPX 30, DPX 35, DPX 40, DPX 45, DPX 50, DPX 55 Service & Repair Manual (SM-593, dated January 1993)

• 1993 Clark GPX/DPX 30–55 service documentation covering 30, 35, 40, 40S, 50, and 55 variants (4-cylinder gas, LPG, or diesel)
• Official Clark Material Handling Company publication SM-593 (dated January 1993)
• Contains 602 pages of factory-level technical data, component exploded-view diagrams, and maintenance tables for the engine, hydraulic, cooling, and electrical systems
• Serves as the primary technical reference for the 1993 launch build, documenting specific internal component clearances and factory alignment standards

Covered Systems and Components

When a Clark GPX or DPX series lift truck rolls into your bay, having the exact factory specifications eliminates the guesswork. This manual details the technical guidance necessary for the maintenance, removal, and overhaul of critical truck subsystems. It breaks down the engine removal process, clearly mapping out the exact fuel, transmission, and cooling circuit disconnections. The text also outlines the specific servicing structures for the braking and inching systems, steering column gear, and steer axle assemblies. To keep these machines operating reliably under heavy loads, the mandatory maintenance intervals for the hydraulic sump, filters, and lift circuit are fully documented.

Specification Highlights

This technical reference provides the key internal tolerances required during heavy maintenance or rebuilds. It confirms cylinder head bolt torque values of 130 Nm and sets crankshaft end-float specifications exactly between 0.002 and 0.015 inches (0.05–0.38 mm). Fluid capacities are laid out straight from the OEM, noting a 9.36-liter engine cooling system and a 7.9-liter lubricating oil capacity. Because industrial lift equipment operates under extreme physical stress, always ensure that any maintenance or overhaul work based on these specifications is performed or verified by a certified technician to maintain strict operational safety. Ultimately, this publication stands as the definitive factory blueprint for the internal structure of these specific lift trucks.