2003 John Deere 240 & 250 Skid Steer Loader Technical Manual (P/N TM1747)

John Deere technical manual TM1747 (FEB03) covers the 2003 John Deere 240 and 250 Skid Steer Loaders, organizing diagnosis, testing, adjustments, and repair by machine system.

Supplied as a single 506-page PDF in English.

• Engine and fuel system: Engine removal and installation, fuel-system diagnostics, injection-pump timing adjustment, throttle-cable adjustment, and radiator inspection and replacement.

• Hydrostatic transmission: Pump and motor disassembly, inspection and assembly, pressure and flow testing, case-drain checks, and startup procedures after component replacement.

• Chain case and axles: Drive-chain tension adjustment, chain and sprocket replacement, axle-housing repair, and bearing setup for different serial-number ranges.

• Steering and brakes: Single- and dual-centering-plate adjustments, travel tracking, steering dampener service, and park-brake diagnosis and repair for both brake designs.

• Hydraulic systems: Husco and Sauer-Danfoss control-valve repair, hydraulic/charge pump service, boom and bucket cylinder repair, and bucket self-leveling adjustment.

• Electrical troubleshooting: Wiring diagrams, harness connector references, component tests, starter motor tests, alternator replacement, and boom/bucket lockout circuit diagnosis.

This manual is written for experienced technicians, with specialized test equipment and service tools identified for the procedures.

Engine, Fuel and Cooling

The diesel engine section covers the 3029D and 3029T, with fuel-delivery fault charts and idle checks. Dynamic timing specifications are matched to injection-pump part numbers, with procedures for the JT07158 TIME TRAC kit.

Repair scope: Internal engine repair is referred to CTM125, and starter and alternator overhaul to CTM77. These separate component manuals are not included.

The timing section warns that adjusting the injection pump while the engine is running can cause the pump to seize.

Hydrostatic Drive, Axles and Brakes

Hydrostatic repair distinguishes Eaton and Sauer-Danfoss motors. The front hydrostatic pump has an exploded view, while center manifold exploded views distinguish early, late, and converted assemblies. Inspection criteria address valve plates, bearings, and rotating components.

Axle changes: Separate procedures cover the earlier locknut arrangement and the shimmed bearing setup beginning at 240 S.N. KV0240A340749 and 250 S.N. KV0250A351083.

Brake changes: The later brake-pack design begins at 240 S.N. KV0240A341300 and 250 S.N. KV0250A351825, with separate repair procedures from the earlier actuator-cylinder design. These serial-specific sections help match the procedure to the installed hardware before an assembly is dismantled.

Steering coverage includes neutral-creep correction, control-lever centering and stops, optional steering detents, and hydraulic control-handle adjustment for hands-only machines.

Hydraulic Valves and Loader Functions

Husco valves are identified through 240 S.N. KV0240A349999 and 250 S.N. KV0250A359999. Sauer-Danfoss valves are identified from 240 S.N. KV0240A440001 and 250 S.N. KV0250A450001. The valve-identification section explains their different hydraulic lock arrangements and pressure-release provisions.

System schematics accompany relief-valve testing, charge-pump pressure and flow checks, and boom/bucket drift diagnosis. Standard-flow and optional high-flow equipment, self-leveling valves, and hydraulic QUIK-TATCH components are covered.

The Husco repair section warns that driving a pin through an unsupported spool can bend it and require replacement of the entire control valve.

Electrical Diagnosis and Cab Service

Power and cranking, charging, lighting, and wiper/washer circuit schematics are paired with troubleshooting charts and test-point references. Electrical component location drawings and harness pinouts support checks of the seat, seat-belt, cab-door, and park-brake interlock circuits.

Cab and chassis work includes ROPS and boom-link removal, QUIK-TATCH hitch repair, and heater deaeration. The optional R134a air-conditioning section covers leak testing, evacuation, charging, operating-pressure diagnosis, and component replacement.

Service Specifications

Torque tables cover metric and inch fasteners, including face-seal fittings with stud ends. Fluid-capacity data, lubricant specifications, wear limits, hydraulic test values, and electrical test specifications accompany the relevant systems.

Follow the manual's precautions for raised booms, pressurized hydraulics, and electrical isolation.

PDF Navigation and Diagram Readability

The total includes the original cover, one blank reverse page, 496 pages of manual sections, and eight index pages; blank divider and end pages are already counted. PDF word search is not usable, and there are no embedded bookmarks; navigation relies on the section contents and printed index. Small wiring labels require zooming for comfortable reading.