Filter
Top Products
644K
42
43
Transmission System
EPA IT4/EU Stage IIIB with Hybrid-
Electric Drive
EPA IT4/EU Stage IIIB / EPA Tier 3/EU Stage IIIA / EPA Tier 2/EU Stage II
Optional 4-Speed Hybrid-Electric Drive Standard 5-Speed with Lockup Torque
Converter
Optional 4 Speed
Type Countershaft-type PowerShift™ Countershaft-type PowerShift Countershaft-type PowerShift
Torque Converter N/A Single stage, single phase Single stage, single phase
Motor/Generator Brushless A/C N/A N/A
Inverter Solid-state power N/A N/A
Shift Control Electronically modulated, adaptive,
load and speed dependent
Electronically modulated, adaptive,
load and speed dependent
Electronically modulated, adaptive,
load and speed dependent
Operator Interface Steering-column or joystick-mounted F-N-R and gear-select lever; quick-shift button on hydraulic lever
Shift Modes Manual/auto (1st–D or 2nd–D); quick-shift button with 2 selectable modes: kick-down or kick-up/down; and 3 adjustable
clutch-cutoff settings
Maximum Travel Speeds (with 23.5 R 25 tires) Forward Reverse Forward Reverse Forward Reverse
Range 1 7.5 km/h (4.5 mph) 7.5 km/h (4.5 mph) 7.8 km/h (4.8 mph) 8.2 km/h (5.1 mph) 7.6 km/h (4.7 mph) 7.9 km/h (4.9 mph)
Range 2 14.0 km/h
(8.7 mph)
14.0 km/h
(8.7 mph)
13.4 km/h
(8.3 mph)
13.6 km/h
(8.5 mph)
12.6 km/h
(7.8 mph)
12.9 km/h
(8.0 mph)
Range 3 25.0 km/h
(15.5 mph)
25.0 km/h
(15.5 mph)
22.6 km/h
(14.0 mph)
28.8 km/h
(17.9 mph)
24.7 km/h
(15.3 mph)
24.9 km/h
(15.5 mph)
Range 4 40.0 km/h
(24.9 mph)
40.0 km/h
(24.9 mph)
27.4 km/h
(17.0 mph)
N/A 36.6 km/h
(22.7 mph)
N/A
Range 5 N/A N/A 40.0 km/h
(24.9 mph)
N/A N/A N/A
Axles/Brakes
EPA IT4/EU Stage IIIB with Hybrid-
Electric Drive
EPA IT4/EU Stage IIIB / EPA Tier 3/EU Stage IIIA / EPA Tier 2/EU Stage II
Final Drives Heavy-duty inboard-mounted planetary Heavy-duty inboard-mounted planetary
Differentials Hydraulic locking front with conventional rear – standard; dual locking front and rear – optional
Rear Axle Oscillation, Stop to Stop (with 23.5 R 25 tires) 26 deg. (13 deg. each direction) 26 deg. (13 deg. each direction)
Service Brakes (conform to ISO 3450) Hydraulically actuated, inboard sun-shaft mounted, oil cooled, self-adjusting, single disc
Parking Brakes (conform to ISO 3450) Automatic spring applied, hydraulically
released, transmission integrated, oil
cooled, multi disc
Automatic spring applied, hydraulically released, driveline mounted, oil cooled,
multi disc
Tires/Wheels
(see page 46 for complete tire adjustments)
Tread Width Width Over Tires
Michelin 23.5 R 25, 1 Star L-3 2170 mm (85.4 in.) 2875 mm (113.2 in.)
Serviceability
ReƟll Capacities EPA IT4/EU Stage IIIB with Hybrid-
Electric Drive
EPA IT4/EU Stage IIIB EPA Tier 3/EU Stage IIIA /
EPA Tier 2/EU Stage II
Fuel Tank (with ground-level fueling) 397 L (105 gal.) 397 L (105 gal.) 352 L (93 gal.)
Engine Cooling System 54.9 L (58 qt.) 45.5 L (48.1 qt.) 29.5 L (31.2 qt.)
Inverter Cooling System 5.7 L (6 qt.) N/A N/A
Engine Oil with Vertical Spin-On Filter 27 L (28.5 qt.) 28 L (29.5 qt.) 24.5 L (26 qt.)
Transmission Fluid with Vertical Filter 37.9 L (40 qt.) 27 L (28.5 qt.) 27 L (28.5 qt.)
Axle Oil (front and rear, each) 22 L (23 qt.) 22 L (23 qt.) 22 L (23 qt.)
Hydraulic Reservoir and Filter 106 L (28 gal.) 110 L (29 gal.) 110 L (29 gal.)
Park Brake Oil (wet disc) 0 0.6 L (20 oz.) 0.6 L (20 oz.)
Engine 644K Z-BAR / HIGH-LIFT / POWERLLEL™
Manufacturer and Model John Deere PowerTech™ PSX
6068
John Deere PowerTech™ PVX
6090
John Deere PowerTech™ Plus
6068H
John Deere PowerTech™
6068H
Non-Road Emission Standard EPA Interim Tier 4/EU Stage
IIIB with Hybrid-Electric Drive
EPA Interim Tier 4/
EU Stage IIIB
EPA Tier 3/EU Stage IIIA EPA Tier 2/EU Stage II
Cylinders 6 6 6 6
Valves Per Cylinder 4 4 4 4
Displacement 6.8 L (414 cu. in.) 9.0 L (548 cu. in.) 6.8 L (414 cu. in.) 6.8 L (414 cu. in.)
Net Peak Power (ISO 9249) 171 kW (229 hp) at 1,700 rpm 173 kW (232 hp) at 1,700 rpm 173 kW (232 hp) at 1,700 rpm 173 kW (232 hp) at 1,700 rpm
Net Peak Torque (ISO 9249) 991 Nm (730 lb.-ft.) at
1,400 rpm
1062 Nm (783 lb.-ft.) at
1,400 rpm
1016 Nm (749 lb.-ft.) at
1,400 rpm
1016 Nm (749 lb.-ft.) at
1,400 rpm
Net Torque Rise 19% 56% 55% 55%
Fuel System (electronically controlled) High-pressure common rail High-pressure common rail High-pressure common rail High-pressure common rail
Lubrication Full-Ơow spin-on Ɵlter and integral cooler Full-Ơow spin-on Ɵlter and integral cooler
Aspiration Turbocharged, charge air cooled Turbocharged, charge air cooled
Air Cleaner Under-hood, dual-element dry type, restriction indicator in
cab monitor for service
Under-hood, dual-element dry type, restriction indicator in
cab monitor for service
Fan Drive Hydraulically driven, proportionally controlled, fan aft of coolers Hydraulically driven, proportionally controlled, fan aft of coolers
Electrical System 24 volt with 100-amp (130-amp optional) alternator 24 volt with 80-amp (100-amp optional) alternator
Batteries (2 – 12 volt) 950 CCA (each) 950 CCA (each) 950 CCA (each) 950 CCA (each)