1978–1985 Case/International 2294, 2394, 2594 Tractors Shop Manual (P/N C4256-90954)

• Details 1978–1985 Case/International tractor models 2090 through 2594, including both mechanical and power-shift transmission variants
• Authentic OEM reproduction based on the original Case/International Shop Manual (PN C4256-90954)
• Includes over 230 exploded-view diagrams, 15+ complex wiring schematics, and extensive specification tables for accurate troubleshooting
• Supplies the official factory technical data for the 504BD and 504BDT six-cylinder engine series used across this entire product line
• Covers component teardowns for the power take-off (PTO), differential lock, power steering system, turbochargers, starting motors, alternators, injector nozzles, and water pumps
• Outlines precise procedures addressing cab removal, park lock mechanisms, rockshaft cylinders, hitch control valves, remote valves, final drives, cylinder sleeves, and brake bleeding

Comprehensive Service Coverage

This 118-page PDF repair manual breaks down service and overhaul procedures for the complete tractor drivetrain and hydraulic infrastructure. Core sections map out engine block and cylinder head service, highlighting valve adjustments, timing gear alignment, and fuel system calibration. For transmission work, you will find step-by-step teardown and rebuild guidance for both mechanical and power-shift systems, including clutch pack assembly, planetary drive service, and hydraulic control valve testing. The front-end documentation details exact procedures for servicing both Carraro and ZF front drive axles, complete with pivot housing and wheel hub overhauls.

To support these complex tasks and eliminate guesswork, the guide features concrete visual aids directly from the manufacturer, including an exploded view of the steering spindle assembly, a cross-sectional view showing pivot pin installation, a schematic view of the steering hydraulic circuit, a cutaway view of the three-speed power shift unit, and a tappet gap adjusting chart. These specific drawings and charts allow heavy equipment mechanics to quickly cross-reference fluid circuits and component placements, drastically reducing diagnostic time in the bay.

By keeping this reference on the shop floor, technicians can avoid outsourcing complex jobs to expensive dealerships. The manual outlines the exact step-by-step instructions needed to independently bleed the power brake system, synchronize the power shift C-2 and C-3 retard valves using a clutch monitor, test the hydraulic compensator pressures, and set the Robert Bosch injection pump timing. Verifying gear lash tolerances and intermediate shaft shim packs directly at the workbench prevents costly secondary teardowns and minimizes equipment downtime.

Crucial Factory Specifications

Having the right specs on hand is critical for a successful rebuild. This manual provides the complete factory reference data needed for shop-floor maintenance. For instance, engine compression at cranking speed is set at 400 psi (2758 kPa). Transmission and hydraulic system capacities require up to 100 quarts (94.6 L) for smaller models and 128 quarts (121.1 L) for the 2394–2594 series. Cylinder head bolt torque values are laid out in a precise multi-stage sequence, finalizing at 210 ft.-lbs. (285 N·m).

Additional essential data includes:

• Intake valve clearance specified at 0.015 inches.
• Coolant system capacity for 2090/2290 models at 38 quarts.
• Bosch injection pump timing marked at 27° BTDC for 504BD engines.

Servicing agricultural equipment involves working with heavy components and highly pressurized hydraulic systems. Always follow standard shop safety practices and rely on the complete, documented procedures within this official manual before beginning a teardown or testing hydraulic load circuits. This specific guide remains the authoritative source for bringing your 2090–2594 series tractor back to factory operating condition.