John Deere 444k Compact Loader User Manual


 
624K
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Engine 624K Z-BAR / HIGH-LIFT / POWERLLEL™ / TOOL CARRIER
Manufacturer and Model John Deere PowerTech™ PVX 6068 John Deere PowerTech™ Plus 6068H John Deere PowerTech™ 6068H
Non-Road Emission Standard EPA Interim Tier 4/EU Stage IIIB EPA Tier 3/EU Stage IIIA EPA Tier 2/EU Stage II
Cylinders 6 6 6
Valves Per Cylinder 4 4 4
Displacement 6.8 L (414 cu. in.) 6.8 L (414 cu. in.) 6.8 L (414 cu. in.)
Net Peak Power (ISO 9249) 139 kW (186 hp) at 1,800 rpm 147 kW (198 hp) at 1,800 rpm 147 kW (198 hp) at 1,800 rpm
Net Peak Torque (ISO 9249) 826 Nm (609 lb.-ft.) at 1,300 rpm 836 Nm (617 lb.-ft.) at 1,600 rpm 836 Nm (617 lb.-ft.) at 1,600 rpm
Net Torque Rise 57% 65% 65%
Fuel System (electronically controlled) 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
Full-Ơow spin-on Ɵlter and integral
cooler
Aspiration Turbocharged, charge air cooled 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
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
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
24 volt with 80-amp (100-amp
optional) alternator
Batteries (2 – 12 volt) 950 CCA (each) 950 CCA (each) 950 CCA (each)
Transmission System
Type Countershaft-type PowerShift™
Torque Converter Single stage, single phase
Shift Control 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 20.5 R 25 tires) Forward Reverse
Range 1 7.6 km/h (4.7 mph) 7.6 km/h (4.7 mph)
Range 2 12.5 km/h (7.8 mph) 13.0 km/h (8.1 mph)
Range 3 25.0 km/h (15.5 mph) 25.7 km/h (16.0 mph)
Range 4 39.5 km/h (24.5 mph) N/A
Axles/Brakes
Final Drives 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 20.5 R 25 tires) 24 deg. (12 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, driveline mounted, oil cooled, multi disc
Tires/Wheels
(see page 40 for complete tire adjustments)
Tread Width Width Over Tires
Michelin 20.5 R 25, 1 Star L-3 2050 mm (80.7 in.) 2657 mm (104.6 in.)
Serviceability
ReƟll Capacities EPA IT4/EU Stage IIIB EPA Tier 3/EU Stage IIIA EPA Tier 2/EU Stage II
Fuel Tank (with ground-level fueling) 352 L (93 gal.) 352 L (93 gal.) 352 L (93 gal.)
Cooling System 34 L (36 qt.) 27 L (29 qt.) 27 L (29 qt.)
Engine Oil with Vertical Spin-On Filter 20 L (21 qt.) 19 L (20 qt.) 19 L (20 qt.)
Transmission Fluid with Vertical Filter 22 L (23 qt.) 22 L (23 qt.) 22 L (23 qt.)
Axle Oil
Front 22 L (23 qt.) 22 L (23 qt.) 22 L (23 qt.)
Rear 17 L (18 qt.) 17 L (18 qt.) 17 L (18 qt.)
Hydraulic Reservoir and Filter 102 L (27 gal.) 110 L (29 gal.) 110 L (29 gal.)
Park Brake Oil (wet disc) 0.3 L (10 oz.) 0.3 L (10 oz.) 0.3 L (10 oz.)
Hydraulic System/Steering
Pump (loader and steering) Variable-displacement, axial-piston pump; closed-center, pressure-compensating system
Maximum Rated Flow at 6895 kPa (1,000 psi) and
2,350 rpm
223 L/m (59 gpm)
System Relief Pressure (loader and steering) 24 821 kPa (3,675 psi)
Loader Controls 2-function valve; joystick control or Ɵngertip controls; hydraulic-function enable/disable; optional 3rd- and
4th-function valve with auxiliary lever
Steering (conforms to ISO 5010)
Type Power, fully hydraulic
Articulation Angle 80-deg. arc (40 deg. each direction)
Turning Radius (measured to centerline of outside tire) 5.27 m (17 ft. 4 in.)