JCB 2D / 2DS / 3 / 3C / 3CS / 3D / 700 Workshop Service Manual, 1970–1982

• Covers the 1970–1982 JCB 2D, 2DS, 3, 3C, 3CS, 3D, and 700 excavator loader series, documenting MK 2 and MK 3 configurations.
• 472 pages of technical data, exploded-view diagrams, and comprehensive maintenance schedules.

Technical Scope and Shop Floor Value

When you are dealing with vintage heavy machinery, accurate specs mean the difference between a smooth rebuild and hours of wasted time. This original service publication provides the definitive reference for the mechanical, hydraulic, powertrain, and electrical systems in the MK 2 and MK 3 range. Because the manual is available as an instant download, you can pull up the exact torque specifications or hydraulic schematics right on your tablet at the workbench without waiting for shipping.

The documentation outlines routine maintenance schedules for the engine, cooling system, and gearbox, alongside complete identification data for serial number tracking. It details the precise contents for dismantling and assembling critical components, including hydraulic pumps, control valves, and dipper attachments. Working with heavy lifting equipment and pressurized lines carries inherent physical risks. Always follow the documented safety protocols and ensure hydraulic system pressure is fully relieved before opening suction strainers or cracking lines to prevent injury.

Key Specification Highlights

The data tables specify a 13.6-liter engine cooling system capacity for the 38TD diesel configuration, while the main hydraulic relief valve pressure is set at 138 bar. For the JCB 3D, the capacity technical reference charts list the total hydraulic system volume at 205 liters.

Normal operating temperature for the torque converter oil is documented at 90–100°C. You will also find comprehensive tightening specifications for the UNF Grade S and Metric 8.8 bolts used throughout the excavator frame and boom structures.