John Deere 4024HF285 Specifications
| Engine Model: John Deere PowerTech E 4024HF285 |
| Engine Type: 4-stroke in-line 4-cylinder turbocharged liquid-cooled diesel |
| Total Displacement: 146.5 cu.in (2.4 L) |
| Rated Engine Power: 74 Hp (55 kW) at 2400 rpm |
| Fuel System Type: Common rail direct injection |
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The John Deere 4024HF285 is a 2.4-liter, inline
4-cylinder turbocharged diesel engine from the PowerTech E family.
Designed for industrial, generator drive, and auxiliary power
applications, this engine meets EPA Tier 3 emission standards through a
high-pressure common rail (HPCR) fuel system with electronic control
unit (ECU) management.
The 4024HF285 designation indicates the 2.4-liter displacement (2.4L)
with the HF285 configuration. The engine features an air-to-air
aftercooling (ATAAC) system for reduced intake air temperatures and
increased charge density. It serves in variable speed and intermittent
load applications including generator sets, compressors, welders, pumps,
and construction equipment.
The John Deere PowerTech E 4024HF285 represents a modern electronically
controlled diesel architecture combining a cast iron cylinder block with
a high-pressure common rail fuel system. Its inline 4-cylinder
configuration with an 86 mm bore and 105 mm stroke provides a long
stroke design delivering high torque at lower engine speeds, with peak
torque of 283 Nm at 2000 rpm. The turbocharger with air-to-air
aftercooling increases charge air density while reducing intake
temperatures, improving combustion efficiency and emission control.
The EPA Tier 3 compliance is achieved through combustion optimization
and the HPCR fuel system without requiring selective catalytic reduction
(SCR) or diesel particulate filter (DPF) aftertreatment. The ECU manages
injection timing, rail pressure, and duration based on sensor inputs.
The open crankcase ventilation system routes blow-by gases to the
atmosphere. The engine is offered with multiple alternator and starter
configurations, including 12V and 24V systems.
Engine Type: Inline 4-cylinder, 4-cycle, water-cooled, turbocharged
diesel
Family: John Deere PowerTech E
Displacement: 2.4 liters (146.5 cu.in)
Bore x Stroke: 86.0 mm x 105.0 mm (3.39 in x 4.13 in)
Compression Ratio: 18.2:1-19.1:1 (source dependent)
Firing Order: 1-3-4-2
Combustion System: Direct injection
Rated Power (Intermittent): 60 kW (80 hp) @ 2,800 rpm
Rated Power (Continuous): 55 kW (74 hp) @ 2,400 rpm
Maximum Torque: 283 Nm (209 lb-ft) @ 1,800-2,000 rpm
Torque Rise: 38%
Low Idle Speed: 900 rpm
Fast Idle Speed: 3,000 rpm
Valvetrain: OHV, 8 valves (2 valves per cylinder: 1 intake, 1 exhaust)
Aspiration: Turbocharged with air-to-air aftercooling (ATAAC)
Emissions Certification: EPA Tier 3, CARB certified
The cylinder block is constructed from cast iron with a deep-skirt
design, providing structural rigidity for sustained industrial
operation. The block utilizes a parent-bore design with cylinder bores
machined directly into the cast iron casting. The cylinder bores are
induction-hardened to resist wear.
Five main bearings support the crankshaft. The water jacket surrounds
each cylinder with cast-in coolant passages. The camshaft is located
within the cylinder block, driven by a gear train from the crankshaft.
The engine mounting points are positioned on the sides of the block.
The piston is a three-ring design incorporating two compression rings
and one oil scraper ring. The piston crown is machined with a re-entrant
bowl for the direct injection combustion chamber geometry. The
connecting rod is manufactured from drop-forged steel. The connecting
rod cap is secured with bolts. The crankshaft is drop-forged steel.
The cylinder head is manufactured from cast iron. The eight valves are
arranged with one intake and one exhaust valve per cylinder. Overhead
valves are actuated via mechanical pushrods and rocker arms, with
screw-and-locknut adjusters for valve lash setting.
The direct injection combustion chamber features a re-entrant bowl
machined into the piston crown. The cylinder head incorporates separate
intake and exhaust ports on opposite sides. The exhaust manifold is
designed to mount the turbocharger unit.
The 4024HF285 is equipped with a high-pressure common rail (HPCR) fuel
system. A high-pressure fuel pump delivers fuel to the common rail
accumulator at pressures up to 1,600 bar (23,200 psi). The electronic
control unit (ECU) manages injection timing, rail pressure, and
injection duration based on sensor inputs.
The fuel filter is a replaceable cartridge type (RE533026) with a
replacement interval of 500 operating hours. The engine control system
includes observable diagnostics and tests for the fuel system.
The lubrication system is a forced-feed circulation configuration. A
gear-type oil pump circulates engine oil through a full-flow spin-on oil
filter (RE519626) with a replacement interval of 500 operating hours.
Oil galleries within the block and cylinder head supply pressurized oil
to the main bearings, connecting rod bearings, camshaft bearings, rocker
arm assemblies, and turbocharger bearing housing. The turbocharger
receives oil through a dedicated supply line. A pressure relief valve
maintains system pressure.
The cooling system is liquid-cooled with forced circulation. A
belt-driven centrifugal water pump circulates coolant through the
cylinder block, cylinder head, turbocharger, and radiator. A wax-type
thermostat regulates coolant flow to maintain optimal operating
temperatures.
The air-to-air aftercooler (ATAAC) is a separate charge air cooler
mounted forward of the radiator, reducing intake air temperature after
the turbocharger. Fan belt lengths vary by application, ranging from
2,325 mm to 2,850 mm depending on the pulley and fan configuration.
Glow Plug System: The engine is equipped with glow plugs for cold-start
assistance.
Starting System: Available in 12V (2.2 kW or 2.6 kW) or 24V (3 kW)
configurations.
Charging System: Three-phase alternator options include 12V, 70A; 12V,
120A; or 24V, 50A.
Crankcase Ventilation: Open crankcase vent system (not closed-circuit).
Timing System: The camshaft is driven by a gear train from the
crankshaft, including timing gears and a balancer shaft system. This
gear-driven arrangement eliminates timing belt replacement requirements.
Turbocharger System: Mitsubishi turbocharger provides forced induction.
The air-to-air aftercooler (ATAAC) reduces charge air temperature.
Dry Weight: 251 kg (554 lb) including flywheel housing, flywheel, and
electrical equipment
Overall Length: 662 mm (26.1 in)
Overall Width: 566 mm (22.3 in)
Overall Height: 772 mm (30.4 in)
Bore Pitch: 100 mm (3.94 in)
Engine Oil Capacity: 7.5-9.0 liters (8-9.5 qt) depending on oil pan
configuration.
Engine Oil Specification: SAE 15W-40 meeting API CI-4, CJ-4, or higher.
Engine Oil Pressure (at rated speed): 3.0-4.5 bar (44-65 psi).
Oil Change Interval: 500 operating hours or 12 months.
Coolant Capacity: 7.0-9.0 liters (7.4-9.5 qt).
Coolant Specification: Ethylene glycol-based antifreeze with corrosion
inhibitors.
Intake Valve Clearance (Cold): 0.20-0.25 mm (0.008-0.010 in).
Exhaust Valve Clearance (Cold): 0.25-0.30 mm (0.010-0.012 in).
Valve Clearance Inspection Interval: 500 operating hours.
Fuel Filter Replacement Interval: 500 hours or 12 months.
Fuel Filter Element: RE533026.
Oil Filter Element: RE519626.
Low Idle Speed: 900 rpm.
High Idle No-Load Speed: 3,000 rpm.
Fuel Consumption at Rated Power: 0.407 lb/hp-hr (248 g/kWh) at 2,800
rpm.
Air-Fuel Ratio: 27:1 at rated power.
Smoke (Bosch Number): 1.2 at rated speed.
Cylinder Head Bolts, Stage 1: 40 Nm (30 lb-ft).
Cylinder Head Bolts, Stage 2: 80 Nm (59 lb-ft).
Cylinder Head Bolts, Stage 3: 120 Nm (89 lb-ft).
Main Bearing Cap Bolts, Stage 1: 50 Nm (37 lb-ft).
Main Bearing Cap Bolts, Stage 2: 100 Nm (74 lb-ft).
Main Bearing Cap Bolts, Stage 3: 100 Nm (74 lb-ft)
Connecting Rod Cap Bolts: 35 Nm (26 lb-ft).
Camshaft Bearing Cap Bolts: 18-22 Nm (13-16 lb-ft).
Flywheel Bolts: 80 Nm (59 lb-ft).
Crankshaft Pulley Bolt: 200-250 Nm (148-184 lb-ft).
Intake Manifold Bolts: 20-25 Nm (15-18 lb-ft).
Exhaust Manifold Nuts: 25-30 Nm (18-22 lb-ft).
Turbocharger Mounting Nuts: 25-30 Nm (18-22 lb-ft).
Injector Clamp Bolts: 12-15 Nm (9-11 lb-ft).
Valve Cover Bolts: 8-10 Nm (6-7 lb-ft).
Rocker Arm Shaft Bracket Bolts: 25-30 Nm (18-22 lb-ft).
Oil Pan Bolts: 15-20 Nm (11-15 lb-ft).
Oil Pump Mounting Bolts: 20-25 Nm (15-18 lb-ft).
Water Pump Mounting Bolts: 15-20 Nm (11-15 lb-ft).
Engine Mount Bracket to Block: 50-60 Nm (37-44 lb-ft).
Starter Motor Bolts (M10): 35-40 Nm (26-30 lb-ft).
The John Deere 4024HF285 engine is utilized across generator drive,
industrial, and auxiliary power applications.
Generator Drive Sets (40-50 kW): The engine serves in standby generator
applications producing up to 50 kW electrical output at 1,800 rpm (60
Hz) or prime power applications producing 45 kW at 1,800 rpm. Hardy
Diesel, Kohler, and MTU Onsite Energy generator models utilize this
engine.
Industrial Power Units: The engine provides intermittent power for
compressors, welders, pumps, hydraulic power units, and blowers
requiring 60 kW at 2,800 rpm.
Construction Equipment: Drilling rigs, light compaction equipment, and
mobile hydraulic systems receive the 4024HF285 for auxiliary and primary
power.
Agricultural Equipment: Stationary agricultural machinery including
irrigation pumps, grain dryers, and material handling systems use this
engine for continuous or intermittent duty.
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