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John Deere 450 H Series Crawler Dozers

Engine 450H 450H LT 450H LGP
Type John Deere 4045D naturally aspirated John Deere 4045D naturally aspirated John Deere 4045T with altitude-compensating turbocharger
Optional John Deere 4045T with altitude-compensating turbocharger John Deere 4045T with altitude-compensating turbocharger  
Rated power @ 2,200 rpm 70 SAE net hp (52 kW) and 73 SAE
gross hp (54.5 kW)
70 SAE net hp (52 kW) and 73 SAE
gross hp (54.5 kW)
74 SAE net hp (55 kW) and 79 SAE
gross hp (59 kW)
Cylinders, wet sleeve 4 4 4
Displacement 276 cu. in. (4.52 L) 276 cu. in. (4.52 L) 276 cu. in. (4.52 L)
Fuel consumption, typical 1.5 to 2.3 gal./hr. (4.9 to 8.7 L/h) 1.5 to 2.3 gal./hr. (4.9 to 8.7 L/h) 1.5 to 2.3 gal./hr. (4.9 to 8.7 L/h)
Maximum net torque 223 lb.-ft. (302 Nm) @ 1,200 rpm 223 lb.-ft. (302 Nm) @ 1,300 rpm 254 lb.-ft. (345 Nm) @ 1,300 rpm
Lubrication Pressure system with full-flow spin-on filter and oil-to-water cooler
Air cleaner Dual stage dry type with safety element, precleaner, and dash-mounted restriction indicator
Electrical system 12 volt with 65-amp alternator
Cooling fan Blower
Transmission
Dual-path, electronic-controlled, hydrostatic drive; load-sensing feature automatically adjusts speed and power to match changing load conditions; each individual track is
powered by a variable-displacement piston pump and two-speed motor combination; decelerator controls speed from holding to 5.0 mph (8.0 km/h)
Travel speeds (infinitely variable)
Forward and reverse ........................................0 to 5.0 mph (0 to 8.0 km/h)
Final Drives
Heavy-duty triple-reduction final drives attach directly to the mainframe and are isolated from track frame and dozer frame loads
Steering
Single-lever steering, direction control, and counterrotation; full power turns and infinitely variable track speeds provide unlimited maneuverability and optimum control;
hydrostatic steering eliminates steering clutches and brakes
Brakes
Hydrostatic (dynamic) braking stops the machine whenever the direction-control lever is moved to neutral, whenever the decelerator is depressed to the end of travel, or
whenever the brake pedal is depressed
Automatic Park Brake
Exclusive safety feature engages wet, multiple-disc brakes automatically whenever the engine stops, whenever the operator applies the brake pedal, or whenever the neutral
start lever lock is in the stop position; machine cannot be driven with brake applied, reducing wear out or need for adjustment
Hydraulic System
System: open center
Pressure, main relief: 3,000 psi (20 685 kPa)
Pump: gear
Flow: 15 gpm (56.8 L/min.) @ 2,200 rpm
Filter, return oil: 10 micron
Control: T-bar three function
Cylinders: heat-treated, chrome-plated, polished cylinder rods, hardened steel (replaceable bushings) pivot pins
Capacities (U.S.)
Fuel tank with lockable cap: 36 gal. (136 L)
Cooling system with coolant recovery tank: 17 qt. (16 L)
Engine oil including spin-on filter: 15 qt. (14 L)
Transmission reservoir refill with filter change: 11.3 gal. (42.7 L)
Final drive (each): 7 qt. (6.6 L)
Hydraulic reservoir refill with filter change: 8.5 gal. (32.2 L)
All power train and hydraulic systems allow 45-degree maximum operation.
John Deere Dura-Trax™ features large deep-heat-treated components; pins and bushings are sealed for life; rollers and idlers are permanently sealed and lubricated; fulllength
track frame covers reduce material buildup and ease cleaning
Undercarriage 450H 450H LT 450H LGP
Grouser width (closed center, single bar) 16 in. (406 mm) 16 in. (406 mm) 24 in. (610 mm)
Track shoes, each side 37 40 40
Ground contact area 2,464 sq. in. (15 897 cm2) 2,752 sq. in. (17 755 cm2) 4,128 sq. in. (26 632 cm2)
Ground pressure 6.1 psi (42.1 kPa) 5.6 psi (38.6 kPa) 4.0 psi (27.6 kPa)
Ground clearance with single-bar grouser
(excluding grouser height)
13.6 in. (346 mm) 13.6 in. (346 mm) 13.6 in. (346 mm)
Length of track on ground 77 in. (1956 mm) 86 in. (2184 mm) 86 in. (2184 mm)
Track gauge, standard 57 in. (1450 mm) 57 in. (1450 mm) 65 in. (1650 mm)
Track rollers, each side 5 6 6
Track pitch 6.29 in. (159.8 mm) 6.29 in. (159.8 mm) 6.29 in. (159.8 mm)


Dimensions 450H 450H LT 450H LGP
Overall height with ROPS or cab 102 in. (2590 mm) 102 in. (2590 mm) 102 in. (2590 mm)
Overall length 162 in. (4114 mm) 160 in. (4064 mm) 160 in. (4064 mm)
Overall length with extended drawbar 2,464 sq. in. (15 897 cm2) 2,752 sq. in. (17 755 cm2) 4,128 sq. in. (26 632 cm2)
Ground clearance, minimum
Single-bar grouser
13.6 in. (346 mm) 13.6 in. (346 mm) 13.6 in. (346 mm)
Swamp shoes 14.4 in. (366 mm) 14.4 in. (366 mm) 14.4 in. (366 mm)
Blade lift height 30.4 in. (773 mm) 30.4 in. (773 mm) 30.4 in. (773 mm)
Blade digging depth 20.8 in. (528 mm) 20.8 in. (528 mm) 20.8 in. (528 mm)
Blade cutting edge angle, three position
adjustable
52, 56, or 60 degrees 52, 56, or 60 degrees 52, 56, or 60 degrees


SAE Operating Weights
Base weights were computed for units with standard equipment, rollover protective structures, full fuel tanks, and 175-lb. (79 kg) operators.

97-in. (2464 mm) blade and 16-in. (406 mm) track shoes:

450H 15,000 lb. (6818 kg)

450H LT
15,500 lb. (7045 kg)

124-in. (3150 mm) blade and 24-in. (610 mm) track Shoes:

450H LGP 16,500 lb. (7500 kg)


Specifications subject to change. Please contact your local dealer for more detailed information.

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