John Deere 750J User Manual download pdf (Page 16)

Engine 750J 750J LT 750J LGP

Manufacturer and Model .............. John Deere PowerTech

6068H John Deere PowerTech 6068H John Deere PowerTech 6068H

Non-Road Emission Standards .......... certified to EPA Tier 3 emissions certified to EPA Tier 3 emissions certified to EPA Tier 3 emissions

Cylinders .......................... 6 6 6

Displacement ....................... 414 cu. in. (6.8 L) 414 cu. in. (6.8 L) 414 cu. in. (6.8 L)

Net Peak Power (ISO9249) ............. 145 hp (108 kW) @ 2,100 rpm 145 hp (108 kW) @ 2,100 rpm 155 hp (116 kW) @ 2,100 rpm

Net Peak Torque (ISO9249) ............ 494 lb.-ft. (670 Nm) @ 1,400 rpm 494 lb.-ft. (670 Nm) @ 1,400 rpm 548 lb.-ft. (742 Nm) @ 1,400 rpm

Aspiration ......................... turbocharger air-to-air aftercooler air-to-air aftercooler

Air Cleaner ......................... dual-stage dry type with safety element, pre- dual-stage dry type with safety element, pre- dual-stage dry type with safety element, pre-

cleaner, and underhood restriction indicator cleaner, and underhood restriction indicator cleaner, and underhood restriction indicator

Slope Operation (maximum angle) ....... 45 deg. 45 deg. 45 deg.

Cooling 750J / 750J LT / 750J LGP

Variable-speed suction fan

Engine Coolant Rating ................ –34 deg. F (–37 deg. C)

Powertrain

Transmission ...................... automatic, dual-path, hydrostatic drive; load-sensing feature automatically adjusts speed and power to match changing load conditions; each individually

controlled track is powered by a variable-displacement piston pump and motor combination; ground-speed selection buttons on single-lever steering and

direction control; independently selectable reverse speed ratios 80%, 100%, 115%, or 130% of forward ground speed; decelerator pedal controls ground

speed to stop

System Relief Pressure ............ 6,650 psi (45 850 kPa)

Travel Speeds

Forward and Reverse .......... 6.3 mph (10.1 km/h)

Maximum (optional) ........... 6.8 mph (10.9 km/h)

Steering .......................... single-lever steering, speed, 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

Final Drives ....................... double-reduction, planetary final drives transfer torque loads over three gear sets; mounted independently of track frames and dozer push frames for

isolation from shock loads

Total Ratio ..................... 46.4056 to 1

Drawbar Pull

Maximum .................. 55,000 lb. (244.6 kN)

@ 1.2 mph (1.9 km/h) ......... 33,000 lb. (146.8 kN)

@ 2.0 mph (3.2 km/h) ......... 22,000 lb. (97.9 kN)

Brakes ........................... decelerator/brake pedal; automatic power management with manual override for matching ground speed

Service Brakes ..................... hydrostatic (dynamic) braking stops machine when the direction/steering control lever is moved to neutral or the decelerator is depressed to the end of travel

Type .......................... hydraulic

Parking Brakes .................... exclusive park brake feature engages wet, multiple-disc brakes whenever the engine stops, whenever the combined decelerator/brake pedal is fully

depressed, whenever the unit is in neutral for three seconds (with detected motion), or whenever the park lock lever is in the park position; machine

cannot be driven with brake applied, reducing wear-out or need for adjustments; spring-applied, hydraulic release

Hydraulics 750J 750J LT 750J LGP

Load sense, piston pump

Blade Type ........................ PAT Outside dozer PAT PAT

Pump (63 cc) ....................... 38 gpm (144 L/m) 38 gpm (144 L/m) 38 gpm (144 L/m) 38 gpm (144 L/m)

System Relief Pressure ............... 3,625 psi 3,625 psi 3,625 psi (24 993 kPa) 3,625 psi (24 993 kPa)

(24 993 kPa) (24 993 kPa)

Differential Pressure ................. 275 psi (1896 kPa) 275 psi (1896 kPa) 275 psi (1896 kPa) 275 psi (1896 kPa)

Maximum Flow @ Unloaded High Idle ..... 37 gpm (140 L/m) 37 gpm (140 L/m) 37 gpm (140 L/m) 37 gpm (140 L/m)

Control ............................ T-bar hydraulic-pilot T-bar hydraulic-pilot T-bar hydraulic-pilot two-function joystick T-bar hydraulic-pilot two-function joystick

two-function joystick two-function joystick with push-button angle function with push-button angle function

with push-button

angle function

Cooling ........................... convective oil sump convective oil sump convective oil sump convective oil sump

PAGES

16–17

Specifications

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22 23 24

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John Deere 750J User Manual Page 16

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