Caterpillar 320C / 320C L Track-Type Excavator Service Manual

Caterpillar 320C and 320C L Excavator Parts Documentation

• Covers 2004 Caterpillar 320C and 320C L Track-Type Excavators powered by the 3066 engine, including specific serial-range configurations
• Official Caterpillar publication XEBP7956-03, released December 2004
• Contains 58 exploded-view assembly diagrams with complete part identification lists and 12-section component categorization
• Delivered as a direct download the moment payment clears
• Indexed PDF search covers every chapter and appendix
• This 1229-page parts book provides the specific group and component data required to identify serviceable parts for the FBA, GAA, MAA, and PAA machine serial number prefixes

Parts Arrangement and Assembly

This Caterpillar 320C and 320C L service manual is structured to allow owners and workshop technicians to identify machine components by part number and assembly group. The document transitions through the major systems, detailing individual parts for the basic engine, including cylinder head, valve mechanism, and block assemblies, as well as the lubrication system components. Coverage includes detailed diagrams and reference lists for the cooling system, fuel delivery, and auxiliary attachment groups such as boom lines, track guides, and various bucket configurations. Each section relies on clear exploded-view diagrams that distinguish between early and late production serial numbers, ensuring the correct selection of serviceable items.

Component Identification and Specifications

Technical data is provided through indexed assembly groups, documenting fluid capacities and system thresholds. The fuel system documentation includes specific part numbers for unit injectors and fuel injection pump components. Cooling system data covers radiator cores and fan assemblies, with specific hose and clamp part numbers organized by serial range. The engine assembly data lists key specs for internal components including valves, pistons, and rods, providing essential reference for parts identification. Coolant system capacity is documented at 410 L in the specification records. The fuel tank volume is listed as 410 L in the capacity reference data. Main relief system pressure is documented at 34,300 kPa for the hydraulic standards. For further details on how factory parts documentation is structured, visit the what an OEM service publication covers page.

Reference only — always consult a certified technician before performing service on this equipment. An official 1229-page Caterpillar OEM parts manual covering the 320C and 320C L excavators, documenting engine, cooling, and fuel system component identification for the FBA, GAA, MAA, and PAA serial series.