Clark C500-35 through C500-55 Forklift Factory Service Manual (P/N PMA-273)

• Official 335-page Clark publication PMA-273, featuring revisions from July 1977 through May 1984
• Covers 1973–1984 Clark C500-35 through C500-55 industrial lift trucks, including H, Y, SY, and HY sub-models
• Contains over 80 maintenance illustrations, technical charts, and testing sequences for engine, cooling, and hydraulic systems
• Details the 355 series platform specifically for shop-floor maintenance routines
• Provides factory-recommended intervals for maintaining the C500 industrial line

Planned Maintenance Overview

Routine upkeep keeps industrial trucks out of the repair bay. This publication outlines the factory-mandated procedures needed to run a tight maintenance program. You get the hard numbers for shift-start inspections alongside schedules for 50- to 250-hour service intervals. It breaks down the exact steps for adjusting major sub-assemblies. Heavy machinery carries inherent risks, so technicians must always follow standard shop safety protocols before diving into mechanical work or pressure testing. The material focuses on catching worn components early, maintaining system integrity, and significantly cutting down fire hazards.

Technical Systems and Specifications

Real shop work requires exact figures, not guesswork. Maintenance groups outline specific data for engine tune-ups, fuel system testing, governor adjustments, and hydraulic system checks. Need the exact specs for intake and exhaust valve tappet clearances? They are listed here. You will also find spark plug gaps and baseline fuel pump pressures. If you are running transmission stall tests, the document gives you the reference values to hit—usually between 1450 and 1600 RPM depending on the configuration. This content serves strictly as a review of what the manual contains and does not provide actual repair instructions.