Part of the John Deere Repair Manuals.
This is the John Deere factory repair manual (TM1744) for the 450H, 550H, and 650H H-Series crawler dozers. Across 2,083 pages it covers every repairable system on these machines: the PowerTech 4045T turbocharged diesel and all its auxiliary systems, the dual-path electronic hydrostatic transmission and final drives, the complete track and undercarriage, the main hydraulic system with pump and valve teardown, and the full electrical system with wiring harnesses and instrument diagnostics. The bulldozer blade, control linkage, and blade hydraulic circuits each have their own dedicated sections. It is the same information a John Deere dealer technician works from, with torque values, fluid capacities, and test pressures called out so a repair is done to spec the first time.
What's Inside This Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | Safety, General Specifications, Torque Values, Fuels and Lubricants | |
| Tracks | Track System Removal and Adjustment, Track Tension, Carrier Rollers, Dealer Fabricated Tools | |
| Axles and Suspension Systems | Drive Axle Housing and Support, Axle Shaft, Bearings and Reduction Gear | |
| Transmission | Removal and Installation, Controls Linkage, Hydrostatic System Service and Testing | |
| Engine | Engine Removal and Installation, PowerTech 4045T 4-Cylinder Diesel | |
| Engine Auxiliary Systems | Cold Weather Starting Aids, Radiator and Fan Shroud, Engine Speed Control, Intake System, Exhaust System, External Fuel Supply System | |
| Dampener Drive | Dampener Drive Elements | |
| Park Brake | Removal and Installation, Control Linkage, Hydraulic System, Wet Multiple-Disk Brake | |
| Equipment Attaching | Drawbar | |
| Electrical System | Batteries, Support and Cables, Alternator and Charging System Wiring, Wiring Harness and Switches, System Controls, Instruments and Indicators, Motors and Actuators | |
| Frames and Chassis | Frame Installation, Chassis Weights | |
| Operator's Station | Removal and Installation, Operator's Enclosure, Seat and Seat Belt, Heating and Air Conditioning | |
| Sheet Metal and Styling | Hood and Engine Enclosure, Grille and Grille Housing | |
| Main Hydraulic System | Hydraulic System Removal, Testing, And Repair, Pump and Valve Service, Horn and Warning Devices | |
| Bulldozer | Blades, Control Linkage, Frames, Blade Hydraulic System |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 550H, 550H-LGP | ||
| Rated Power at 2200 rpm | 63 kW (84 hp) SAE net | |
| Maximum Net Torque at 1200 rpm | 372 N.m (276 lb-ft) | |
| Hydraulic System Pressure | 20 685 kPa (3000 psi) | |
| Hydraulic System Flow Rate | 56.8 L/min (15 gpm) at 2200 rpm | |
| Transmission Type | Dual-path, electronic-controlled, hydrostatic drive, infinitely variable | |
| 550H, 550H-LGP, 650H, 650H-LGP | ||
| Engine Oil Capacity (Including Filter) | 14 L (15 qt) | |
| Fuel Tank Capacity | 178 L (47 gal) | |
| Cooling System Capacity | 15.5 L (16 qt) | |
| Hydraulic Reservoir Capacity (Including Filter) | 32 L (8.5 gal) | |
| Transmission Reservoir Capacity (Including Filter) | 43 L (11.3 gal) | |
| Final Drive Capacity (Each Side) | 8.5 L (9 qt) | |
| 550H | ||
| SAE Operating Weight, 550H | 7620 kg (16,800 lb) | |
| 650H | ||
| SAE Operating Weight, 650H | 8391 kg (18,500 lb) | |
