John Deere 450H, 550H, 650H Crawler Dozer Repair Technical Manual (TM1744)

John Deere 450H, 550H, 650H Crawler Dozer Repair Technical Manual (TM1744 08JUN04)

This official repair manual offers comprehensive service and maintenance procedures for John Deere 450H, 550H, and 650H crawler dozers. Covering a wide range of systems—from hydrostatic transmission and final drives to hydraulic cylinders, track frames, operator station, air conditioning, and safety components—this guide is essential for technicians and equipment owners committed to long-term performance and reliability.

Model Covers:

John Deere 450H, 550H, 650H Crawler Dozer

H-Series Crawler Dozer

File Format: PDF

Size: 14.99 MB

No. of pages: 740

Delivery Method: Instant Download – Access your file immediately after purchase.

📑 Included Sections:

Tracks and Undercarriage

• Carrier rollers, track rollers, rock guards, sprockets, front idlers and bushings
• Track chain disassembly, pin and bushing turning, sealed and lubricated chain servicing
• Track pitch measurement and tension adjustments

Axles, Final Drive, and Suspension

• Drive axle removal, reduction gear servicing, final drive reassembly
• Lift bracket usage and dealer-fabricated tool references

Transmission and Hydrostatic Components

• Hydrostatic pump and motor removal, disassembly, and diagnostics
• Displacement control valves, charge pump assembly, oil cooler bypass valve
• Transmission control linkages, sensors, and speed lever calibration

Engine and Auxiliary Systems

• PowerTech™ 4.5L engine removal, speed control, radiator, exhaust, and fuel tank servicing
• Coolant heater, air intake system, and muffler installation
• External fuel supply system and heater/blower motor servicing

Park Brake and Control Linkage

• Park brake and valve installation, pedal linkage adjustment
• Disassembly and assembly of brake valve and actuating components

Electrical and Starting System

• Battery, alternator, starter motor removal and testing
• Deutsch™ and Weather Pack™ connector replacement procedures
• Display monitor, transmission controller, instrument panel servicing

Operator Station and Cab

• ROPS removal, seat and window replacement, wiper motor installation
• HVAC unit servicing, compressor oil charge, expansion valve maintenance
• Upper and under-seat heater disassembly and component checks

Main Hydraulic and Dozer Blade Systems

• Hydraulic pump, filter, and reservoir service (with/without winch option)
• Blade lift, tilt, angle cylinder removal and repair
• Complete disassembly/assembly of dozer valve sections and relief valves

Frame, Chassis, Sheet Metal

• Frame and bottom guard installation, hood and grille service
• Welding repair procedures, counterweight mounting, and pivot shaft reinstallation

For complete service information, also see:

450H, 550H, 650H Operation and Test .......... TM1743
Alternators and Starting Motors .......... CTM77
PowerTech™ 4.5L and 6.8L Diesel Engines - Base Engine .......... CTM104
4000S Winches .......... CTM166
PowerTech™ 4.5L and 6.8L Diesel Engines - Mechanical Fuel Systems .......... CTM207
PowerTech™ 4.5L and 6.8L Diesel Engines - Level 12 Electronic Fuel System with DE10 Pump .......... CTM331
120 Series Hydraulic Cylinders .......... TM-H120A
Service Advisor™ System Computer Connection .......... T133991
Undercarriage Appraisal Manual .......... SP326

This John Deere 450H, 550H, 650H Crawler Dozer Repair Manual is an essential resource for professional-grade diagnostics, repair, and rebuilding—designed to keep your equipment in peak condition under the most demanding job site conditions.