John Deere 744E Loader Repair Manual, 1998 (P/N TM1455)

John Deere Technical Manual P/N TM1455, 744E Loader Repair, dated April 7, 1998, covers component removal, disassembly, inspection, assembly, and adjustment for the 744E Loader.

PDF Search, Diagram Detail and Page Count

Text access and drawing detail: PDF text search and embedded bookmarks are not available. Small wiring and connector labels require zooming; some electrical views are clipped at the page edges. Several topic pages contain headings without body text.

Supplied as one printable English PDF with 1,109 pages: one cover page, one contents page, and 1,107 manual pages. Repeated illustrations and pages containing only headings are already included in this total.

Powertrain, Steering and Loader Component Repair

The selected coverage below highlights major shop work rather than reproducing the full contents. Other topics include bucket tooth replacement and cutting-edge repair.

• Powertrain: Step-by-step clutch pack disassembly and assembly, countershaft power shift transmission repair, planetary torque converter, master clutch, drive shafts, and U-joints.

• Engine and auxiliaries: Engine removal and installation, valve lash adjustment, fuel injection pump and nozzle removal and installation, cooling components, and intake-system leakage testing.

• Steering: Steering valve overhaul, priority and crossover relief valves, steering cylinders, secondary steering equipment, and accumulator charging.

• Brakes: Single and dual brake valve repair, pilot/brake pump overhaul, hydraulic bleeding, park brake disassembly, and in-machine brake lining inspection.

• Loader hydraulics: Steering/loader pump overhaul, main and auxiliary control valves, boom and bucket cylinders, pilot controllers, and ride control accumulators.

• Electrical controls: Pressure-switch checks and adjustment, electronic governor settings, connector repair, wiring illustrations, and monitor connections.

• Frame and operator station: Frame separation and pivot bearing work, cab/canopy removal and tilting, operator enclosure repairs, heating, and R-12 air conditioning.

This manual is written for experienced technicians; heavy component work also requires the lifting and service equipment specified in the procedures.

Transmission Repair and Axle Service Boundaries

Transmission work includes forward/reverse and high/low clutch pack inspection, countershaft and output-shaft service, end play shimming, pressure-regulating valve repair, and accumulator identification. Serial-specific component views help match clutch and hydraulic-control arrangements before disassembly.

Front drive-shaft support bearing notes explain how housing misalignment causes binding and premature bearing failure. The towing section warns of transmission damage from inadequate lubrication when drive shafts remain connected for distances beyond 460 m (500 yd.).

Axle and differential removal is covered, but complete 1600 Series axle and internal wet-disk brake repair require separate CTM-18. Machine operation and system testing are addressed in TM1454, also a separate publication; neither is included.

6101T Engine Installation and Fuel-System Work

Engine procedures extend to the oil pan, water pump, turbocharger, aftercooler, intake and exhaust manifolds, radiator, and fan belts. Fuel-system work includes injection pump timing and nozzle installation, with references to the JDE811 Flywheel Turning Tool and JDE814 Timing Pin.

Complete internal engine repair, water-pump and turbocharger repair, and injection-nozzle testing and repair require separate CTM-20, which is not included. Internal injection pump inspection and repair are assigned to an authorized injection pump service center.

Steering, Brake and Loader Hydraulic Components

Steering Valve Cross Section drawings support valve assembly work. Brake coverage distinguishes single and dual valves and includes pump component inspection and nitrogen accumulator charging.

Loader procedures cover boom and bucket linkage, cylinder seals and wear checks, main pump gears and housings, and hydraulic reservoir assemblies. Single-lever, two-lever, and auxiliary pilot controls are addressed, along with ride control solenoid and accumulator service.

The loader and pilot accumulators are replaced as units when defective; the ride control accumulator has disassembly and seal-replacement procedures.

The safety guidance addresses trapped pilot and accumulator pressure, raised boom loads, and heavy component handling.

Electrical Checks and Wiring Illustrations

Pressure-switch adjustment tables and sender resistance specifications support component checks. Foot throttle resistor and speed-control pedal adjustments use the JT05829 Electronic Governor Tester.

Electrical Components, Engine Controller Harness Components, and Monitor Connections drawings identify wire colors, connector positions, and serial-specific arrangements. Connector procedures cover DEUTSCH, WEATHER PACK, and AMP Econoseal J Series contacts.

Boom height kickout and bucket return-to-dig sections cover switch replacement and proximity-switch adjustment.

Alternator and starting motor removal and installation are included; their internal repair requires separate CTM-11, which is not supplied.

Frame, Cab and R-12 Air Conditioning

Frame procedures include pivot bearings, shims, seals, and major-structure welding references. Operator-station coverage extends to window dimensions, doors, wipers, seats, seat belts, and exterior sheet metal.

The air-conditioning procedures apply to the R-12 system, including recovery, evacuation, charging, expansion valve bench testing, and thermistor tests. Heater core and blower motor service are also covered.

Examples of Pump Clearances and ROPS Torque

Transmission pump specifications list 0.050–0.080 mm side clearance between the gears and cover, and 0.120–0.165 mm top clearance between the gears and body, with a Pump Cross Section drawing.

ROPS mounting bolt torque is specified as 620 ± 120 N·m. Other reference charts cover metric and unified inch fasteners, O-ring boss fittings, flat face O-ring seals, and four-bolt flange connections.