Need the factory rebuild data for your Case IH WDX1902 or WDX2302? This 1,572-page repair manual PDF (OEM #87579346) covers the complete Self-Propelled Windrower from engine block to cab roof. Inside you get full wiring diagrams across every cab circuit and header electrical run, hydraulic schematics with fluid routing for the hydrostatic transmission and header lift system, a dedicated error code library, and page after page of step-by-step teardown and rebuild procedures spanning engine, rear axle, brakes, climate control, and platform systems. Torque tables, fluid capacities, and a troubleshooting section round it out. Set the RH Header Lift Relief Valve (L-03) to 3,300 ± 100 PSI; confirm cylinder bore diameters fall between 111.778 and 111.803 mm before you button up the block. Your windrower is down and the season won't wait. Jump to any system with bookmarks, search any spec by keyword, and get back in the field.
What's Inside This Case IH WDX1902, WDX2302 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 53-76 | Precautionary Statements, Safety, Introduction, Product Identification Numbers, Engine Pin Number |
| Engine | 77-250 | Cylinder Block, Cylinder Head, Camshaft, Crankshaft, Connecting Rods, Pistons, Manifolds, Timing Gears |
| Front Mechanical Drive | 251-276 | Planetary Gearbox Drive, Hydraulic Motor, Brake, Hub, Spindle, Ring Gear, Planetary Carrier |
| Hydrostatic Transmission | 277-396 | Ground Drive, Pumps, Motors, Reservoir, Solenoid Valve, Relief Valve, Linkage |
| Brakes and Controls | 397-414 | Brake Assembly, Rotating Disc, Stationary Disc, Primary Disc, Compression Spring, Torque Pin, Power Plate, Hydraulic Motor |
| Hydraulic Systems | 415-592 | Ground Drive Pump, Header Drive Pump, Oil Cooler, RH Accumulator, LH Accumulator, Independent Control Valve Manifold, Draper Control, Header Lift Pumps |
| Rear Axle | 593-640 | Wheel, Axle Shaft, Hub, Axle Support Fork, Extension, Axle Tube, Pivot Pin, Air Spring |
| Climate Control | 641-728 | Compressor, Refrigerant, Refrigerant Oil, External Cab Filter, Recirculation Filter, Condenser, Receiver/Drier, Expansion Valve |
| Electrical Systems | 729-1420 | Alternator, Ammeter, Circuit Breaker, Diode, Fuse, Liquid Crystal Display (LCD), Main Control Module (Xcm), Ohmmeter |
| Header Attachments | 1421-1482 | Cut Height Cylinders, Flow Divider Manifold, Control Valve Manifold, Reel Lift Valve, Hydraulic Hose Routing, Electrical System - Fuse and Relay |
| Optional Equipment | 1483-1524 | A-Pillar Display, Automatic Temperature Control (Atc), Window Screen Kit, Deluxe Mirror, Adjustable Windrow Shield, Hydraulic Reel Drive Kit |
| Platform, Cab and Decals | 1525-1572 | Deluxe Operator's Seat, Seat Suspension System, Seat Air Compressor, Cab Door, Cab Roof, Multi-Function Handle (Mfh) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| RH Header Lift Relief Valve (L-03) Pressure Adjustment | 3300 ± 100 PSI | p. 555 |
| Cylinder Bore Diameters | 111.778 - 111.803 mm (4.4007 - 4.4017″) | p. 81 |
| Engine Bore | 111.8 mm (4.4 in.) | p. 69 |
| Engine Displacement | 7.5 L (456 cu. In.) | p. 69 |
| Engine Oil Capacity (with filter) | 21L (22qts.) | p. 67 |
| Cooling System Capacity | 30 Liters (31 Qts. U.S.) | p. 88 |
| Charge Pump Relief Setting | 20 bar (290 PSI) | p. 70 |
| Refrigerant System Capacity | 2.15 Kg (4.75 lbs.) R134a | p. 644 |
| WDX1902 | ||
| WDX1902 Engine HP | 139 kW (186 hp) | p. 69 |
| Rear Axle Clearance Height (Non-Suspended) | 922 mm (36.3 in.) | p. 595 |
| WDX2302 | ||
| WDX2302 Engine HP | 168 kW (226 hp) | p. 69 |
| Rear Axle Clearance Height (Suspended) | 1001 mm (39.4 in.) | p. 619 |
Case IH WDX1902, WDX2302 Common Problems This Manual Covers
Case IH WDX1902 hydrostatic pump grinding noise with no forward or reverse drive p. 277
Verify charge pump relief pressure at 20 bar (290 PSI) per page 123. Drain and inspect the hydrostatic fluid for metallic contamination. If the pump is seized or scored internally, reference the Hydrostatic Transmission section starting page 277 for pump removal procedures before ordering a replacement unit.
Manual Section: Hydrostatic TransmissionEngine cranks but won't fire, or turns over slowly in cold morning temperatures
Check the fuel system for air ingestion first. Inspect all fittings and bleed the injection circuit. Verify engine oil is at the correct grade for ambient temperature; oil capacity is 19 L (20 qts.) on page 87. If crank speed is weak, test battery voltage and inspect the starter circuit before condemning the pump.
Manual Section: EngineEngine temperature climbs into the red at full load, coolant overflow tank venting
Inspect the rotary radiator screen for packed crop debris before any other cooling diagnosis. Verify coolant level; system holds 30 L (31 qts. U.S.) per page 88. Check the cooling fan belt tension and thermostat operation. If the block shows localized hot spots, pressure-test the system for combustion gas ingestion.
Manual Section: EngineHeader lift cylinders won't raise fully or creep down slowly between cuts p. 555
Test the RH header lift relief valve (L-03) with a calibrated gauge. Pressure should read 3300 ± 100 PSI per page 555; adjust the valve if it falls outside that range. Inspect all cylinder seals for bypass, and verify hydraulic oil level at the tank sight glass before condemning the pump.
Manual Section: Hydraulic SystemsCab air conditioning blows warm air, no cooling even at maximum fan speed p. 644
Connect a manifold gauge set and verify refrigerant charge. System capacity is 2.15 kg (4.75 lbs.) R134a per page 644. Inspect the condenser face for heavy crop debris blocking airflow, check the compressor clutch for proper engagement, and test ATC fault codes per the Climate Control troubleshooting procedures before adding refrigerant.
Manual Section: Climate ControlInternal engine knock or blue smoke at startup after a high-hour service interval p. 81
Inspect cylinder bore diameters; standard dimension is 111.778 to 111.803 mm (4.4007 to 4.4017 in.) per page 81. Bore and hone the block, or replace it, if measurements fall outside tolerance. Check oil consumption rate against the 19 L (20 qts.) fill and verify valve stem seals before pulling the head.
Manual Section: EngineFrequently Asked Questions
Torque specifications for Case IH WDX1902 cutting head bolts.
For Case IH WDX1902, the cylinder head bolts should be tightened in three stages: first to 55 N⋅m (40 ft.-lb.), then to 95 N⋅m (70 ft.-lb.), and finally a further 90° using a torque angle gauge. Rocker shaft securing bolts are tightened a further 45° in sequence.
How to reset the transmission on Case IH WDX2302?
To reset the transmission on a Case IH WDX2302, perform the Neutral Adjustment procedure. This involves entering the 'Dealer Setup Menu' by turning the key switch to 'ON' (engine OFF) and holding buttons on the MFH for about seven seconds, then navigating to 'Set Neutral' and pressing ENTER. The propulsion/steering shaft is then adjusted to achieve 279 mm ± 4 mm (10.98 in ± 0.16 in) between the front face of the steering nuts.
How to adjust the hydraulic relief valve on Case IH WDX1902?
The high-pressure relief valves are factory set and non-adjustable. However, the charge pump relief valve is shim adjustable to 20 bar (290 PSI) by changing shim thicknesses (0.25 mm, 0.51 mm, 1.27 mm). The pilot-operated relief valve on the Auxiliary Speed Control can be adjusted by turning a screw clockwise to increase or counterclockwise to decrease the relief pressure setting. The RH Header Lift Relief Valve (L-03) can be adjusted to achieve a gauge reading of 3300 ± 100 PSI.
What are the replacement specifications for the Cylinder Block?
The cylinder block bores are machined integral with the cylinder block and can be bored oversize for the fitment of sleeves. Specifications for the cylinder bore include a repair limit of 0.025 mm (0.001″) for taper and 0.03 mm (0.0015″) for out of round, with a diameter of 111.778 - 111.803 mm (4.4007 - 4.4017″).
Is this Case IH WDX1902, WDX2302 Repair Manual a digital download?
This is a 1572-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Can I print this manual?
Yes. The PDF has no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
Does this Case IH WDX1902, WDX2302 Repair Manual cover the hydraulic system?
Included. Hydraulic system schematics cover all circuits, control valves, and component specifications for the Case IH WDX1902, WDX2302.
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