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John Deere 4024TF270 Engine

The John Deere 4024TF270 is a 2.4-liter, 4-cylinder, in-line, 4-cycle heavy-duty diesel engine belonging to the John Deere PowerTech Series. It features a turbocharged aspiration system and is engineered primarily for industrial intermittent, continuous, and generator set applications. The engine utilizes a cast-iron cylinder block without balancer shafts and is configured for heavy-duty cycling under EPA Tier 2 / Stage II emissions standards. Characterized by its compact envelope and an open crankcase ventilation system, it provides reliable power distribution across agricultural, construction, and power generation units.

The cylinder head utilizes an overhead valve (OHV) design with a 2-valve per cylinder configuration (1 intake valve and 1 exhaust valve per cylinder). The valvetrain operates via mechanical cam followers and a rigid rocker arm assembly. Mechanical adjustment allows for a specified valve recess limit of 0.08 to 1.40 mm below the cylinder head deck surface. Bore: 86 mm (3.40 in). Stroke: 105 mm (4.13 in). Total Displacement: 2.44 liters (149 cubic inches). Compression Ratio: 19.1:1 for industrial configurations, and up to 20.5:1 for generator models.

Fuel System: The fuel architecture relies on a mechanical direct injection configuration. It incorporates a mechanical transfer pump feeding distinct, high-pressure cam-actuated unit injection pumps (UIP) assigned to each cylinder line. The injection cycle forces fuel directly into the piston bowl combustion chambers via multi-hole mechanical nozzles. Fuel conditioning includes a 5-micron high-efficiency replaceable primary filter element integrated with a sediment water separator bowl. Engine governing is managed via a mechanical flyweight governor that maintains engine speed within a 7% to 10% regulation drop curve.

The engine utilizes a full-pressure lubrication system driven by an internal oil pump. The circuit incorporates a spin-on replaceable full-flow oil filter and an oil cooler integrated within the block layout. Factory specifications dictate a 500-hour or 12-month standard oil change interval under normal operating parameters using approved John Deere PLUS-50 lubricant. Engine thermal management consists of a liquid-cooled pressurized circuit circulated by a heavy-duty, belt-driven centrifugal water pump. The circuit utilizes a wax-element thermostat to manage baseline operating temperatures, and the system is designed to run on John Deere COOL-GARD II extended life coolant to prevent cavitation and internal scale buildup.

General Technical Data

Engine Specifications

Engine Model ............... John Deere 4024TF270
Engine Type ............... 4-cycle inline 4-cylinder turbocharged liquid-cooled diesel
Number of Cylinders ............... 4
Cylinder Arrangement ............... In-line
Engine Bore, in (mm) ............... 3.39 (86.0)
Engine Stroke, in (mm) ............... 4.13 (105.0)
Displacement, cu.in (L) ............... 149 (2.4)
Rated Engine Power, hp (kW) ............... 43-61 (32-45.5)
Rated Engine Speed, rpm ............... 1800-2800
Peak Torque ............... 129 lb-ft (175 Nm) at 1800 rpm
Low Idle Speed ............... 900 rpm
High Idle Speed ............... 3000 rpm
Aspiration Type ............... Turbocharged
Compression Ratio ............... 20.5:1
Firing Order ............... 1-3-4-2
Cylinder Block Type ............... Heavy duty cast iron
Cylinder Head Type ............... Cast iron one piece
Lubrication System ............... Full-pressure system
Oil Pump Type ............... Integrated gerotor
Oil Filter Type ............... Full-flow spin-on element
Cooling System ............... Liquid-cooled forced circulation
Water Pump Type ............... Gear-driven centrifugal
Air Cleaner Type ............... Dry dual element with safety restriction indicator
Starting System ............... Electric starter motor
Electrical System ............... 12V or 24V

Fuel System

Fuel System Type ............... Mechanical direct injection
Injection Pump Type ............... Unitized enclosed electronic or mechanical cassettes
Governor Type ............... Mechanical flyweight
Fuel Transfer Pump ............... Mechanical diaphragm type
Fuel Filter Type ............... Replaceable spin-on element
Fuel Delivery Method ............... Direct injection into combustion chamber
Injection Timing ............... Internal cold advance system
Recommended Fuel Type ............... Ultra-low sulfur diesel standard number 2-D
Maximum Fuel Pump Lift, ft (m) ............... 3.3 (1.0)
Fuel Return Line Maximum Flow, lb/hr (kg/hr) ............... 45 (20)

Dimensions and Weight

Overall Length, in (mm) ............... 26.1 (660)
Overall Width, in (mm) ............... 22.3 (565)
Overall Height, in (mm) ............... 30.4 (770)
Dry Weight, lbs (kg) ............... 554 (251)

Maintenance Data

Service Information

Oil Pressure at Low Idle, psi (kPa) ............... 15 (105)
Oil Pressure at Rated Speed, psi (kPa) ............... 50 (345)
Thermostat Opening Temperature, F (C) ............... 180 (82)
Thermostat Full Open Temperature, F (C) ............... 202 (94)
Maximum Allowable Coolant Temperature, F (C) ............... 230 (110)
Valve Clearance Intake (Cold), in (mm) ............... 0.014 (0.36)
Valve Clearance Exhaust (Cold), in (mm) ............... 0.018 (0.46)

Engine Oil and Coolant

Engine Oil Type .................. SAE 10W-30, SAE 15W-40, or JD Plus-50
API Service Classifications ......................... CI-4 or CJ-4
Engine Oil Capacity with Filter, qt (L) ............... 8.5 (8.0)
Coolant Capacity, qt (L) ............... 15.5 (14.7)

Service Intervals

Change oil and filter ............... Every 500 hours
Inspect air cleaner ............... Every 250 hours
Replace air cleaner ............... Every 1000 hours
Replace fuel filter ............... Every 500 hours
Valve clearance adjustment ............... Every 1000 hours
Fuel system inspection ............... Every 1000 hours
Change coolant ............... Every 2000 hours
Compression test ............... Every 1000 hours
Clean radiator core ............... Every 250 hours
Inspect belt tension ............... Every 250 hours

Service Specifications

Cylinder Bore Inside Diameter, in (mm) ............... 3.3858-3.3866 (86.000-86.022)
Cylinder Bore Maximum, Wear Limit, in (mm) ............... 3.3898 (86.100)
Cylinder Bore Out of Round, Maximum, in (mm) ............... 0.0020 (0.050)
Cylinder Bore Taper Maximum, in (mm) ............... 0.0020 (0.050)
Main Journal Diameter, in (mm) ............... 2.7543-2.7551 (69.960-69.980)
Main Bearing Clearance, in (mm) ............... 0.0016-0.0035 (0.040-0.090)
Crankshaft End Play, in (mm) ............... 0.0035-0.0106 (0.090-0.270)
Connecting Rod Journal Diameter, in (mm) ............... 2.2031-2.2039 (55.960-55.980)
Connecting Rod Bearing Clearance, in (mm) ............... 0.0016-0.0031 (0.040-0.080)
Connecting Rod Side Clearance, in (mm) ............... 0.0059-0.0138 (0.150-0.350)
Crankshaft Thrust Bearing Thickness, in (mm) ............... 0.0921-0.0933 (2.340-2.370)
Connecting Rod Big End Bore I.D, in (mm) ............... 2.3228-2.3236 (59.000-59.020)
Connecting Rod Small End Bushing, in (mm) ............... 1.1819-1.1827 (30.020-30.040)
Piston Skirt Outer Diameter, in (mm) ............... 3.3819-3.3827 (85.900-85.920)
Piston to Cylinder Bore Clearance, in (mm) ............... 0.0031-0.0047 (0.080-0.120)
Piston Pin Diameter, in (mm) ............... 1.1807-1.1811 (29.990-30.000)
Piston Pin to Con Rod Bushing Clearance, in (mm) ............... 0.0006-0.0014 (0.015-0.035)
Piston Pin Bore In Piston, in (mm) ............... 1.1813-1.1817 (30.005-30.015)
Piston Pin Bushing Outside Diameter, in (mm) ............... 1.2618-1.2638 (32.050-32.100)
Top Ring Groove Width, in (mm) ............... 0.0807-0.0819 (2.050-2.080)
Second Ring Groove Width, in (mm) ............... 0.0807-0.0819 (2.050-2.080)
Oil Ring Groove Width, in (mm) ............... 0.1587-0.1598 (4.030-4.060)
Top Ring Groove Side Clearance, in (mm) ............... 0.0028-0.0043 (0.070-0.110)
Second Ring Groove Side Clearance, in (mm) ............... 0.0020-0.0035 (0.050-0.090)
Oil Ring Groove Side Clearance, in (mm) ............... 0.0012-0.0028 (0.030-0.070)
Top Ring End Gap, in (mm) ............... 0.0098-0.0157 (0.250-0.400)
Second Ring End Gap, in (mm) ............... 0.0138-0.0217 (0.350-0.550)
Oil Ring End Gap, in (mm) ............... 0.0098-0.0177 (0.250-0.450)
Cylinder Head Flatness Maximum Warpage, in (mm) ............... 0.0020 (0.050)
Intake Valve Stem Diameter, in (mm) ............... 0.2740-0.2748 (6.960-6.980)
Exhaust Valve Stem Diameter, in (mm) ............... 0.2732-0.2740 (6.940-6.960)
Intake Valve Stem to Guide Clearance, in (mm) ............... 0.0008-0.0024 (0.020-0.060)
Exhaust Valve Stem to Guide Clearance, in (mm) ............... 0.0016-0.0031 (0.040-0.080)
Intake Valve Face Angle, deg ............... 45
Exhaust Valve Face Angle, deg ............... 45
Intake Valve Seat Angle, deg ............... 45
Exhaust Valve Seat Angle, deg ............... 45
Intake Valve Seat Width, in (mm) ............... 0.0551-0.0709 (1.400-1.800)
Exhaust Valve Seat Width, in (mm) ............... 0.0630-0.0787 (1.600-2.000)
Valve Guide Inside Diameter, in (mm) ............... 0.2756-0.2764 (7.000-7.020)
Valve Spring Free Length, in (mm) ............... 1.929 (49.00)
Camshaft Journal Diameter (№1), in (mm) ............... 2.1220-2.1236 (53.900-53.940)
Camshaft Journal Diameter (№2), in (mm) ............... 2.1024-2.1039 (53.400-53.440)
Camshaft Journal Diameter (№3), in (mm) ............... 2.0827-2.0843 (52.900-52.940)
Camshaft Journal Diameter (№4), in (mm) ............... 2.0630-2.0646 (52.400-52.440)
Camshaft Bearing Clearance, in (mm) ............... 0.0016-0.0035 (0.040-0.090)
Camshaft End Play, in (mm) ............... 0.0024-0.0079 (0.060-0.200)
Cam Lobes Height (Intake), in (mm) ............... 0.2677-0.2756 (6.800-7.000)
Cam Lobes Height (Exhaust), in (mm) ............... 0.2677-0.2756 (6.800-7.000)
Rocker Arm Shaft Diameter, in (mm) ............... 0.7862-0.7870 (19.970-19.990)
Rocker Arm Bushing Inside Diameter, in (mm) ............... 0.7878-0.7890 (20.010-20.040)
Rocker Arm Bushing to Shaft Clearance, in (mm) ............... 0.0008-0.0028 (0.020-0.070)
Tappet Bore Diameter In Block, in (mm) ............... 0.6299-0.6311 (16.000-16.030)
Tappet Body Outside Diameter, in (mm) ............... 0.6276-0.6283 (15.940-15.960)
Tappet to Block Clearance, in (mm) ............... 0.0016-0.0035 (0.040-0.090)
Crankshaft Gear Backlash, in (mm) ............... 0.0028-0.0067 (0.070-0.170)
Camshaft Gear Backlash, in (mm) ............... 0.0028-0.0067 (0.070-0.170)
Oil Pump Gear Backlash, in (mm) ............... 0.0039-0.0079 (0.100-0.200)
Balancer Shaft Journal Diameter, in (mm) ............... 1.8890-1.8898 (47.980-48.000)

Tightening Torques

Cylinder Head Bolts (1-Step), lb-ft (Nm) ............... 44 (60)
Cylinder Head Bolts (2-Step), lb-ft (Nm) ............... 88 (120)
Main Bearing Cap Bolts (1-Step), lb-ft (Nm) ............... 37 (50)
Main Bearing Cap Bolts (2-Step), lb-ft (Nm) ............... 74 (100)
Connecting Rod Cap Bolts (1-Step), lb-ft (Nm) ............... 22 (30)
Connecting Rod Cap Bolts (2-Step), lb-ft (Nm) ............... 44 (60)
Flywheel Bolts, lb-ft (Nm) ............... 81 (110)
Flywheel Housing Bolts, lb-ft (Nm) ............... 37 (50)
Crankshaft Pulley Cap Screw, lb-ft (Nm) ............... 74 (100)
Camshaft Thrust Plate Bolts, lb-ft (Nm) ............... 18 (24)
Camshaft Gear Bolt, lb-ft (Nm) ............... 59 (80)
Rocker Arm Shaft Support Bolts, lb-ft (Nm) ............... 26 (35)
Rocker Arm Adjustment Locknuts, lb-ft (Nm) ............... 20 (27)
Rocker Arm Cover Bolts, lb-ft (Nm) ............... 9 (12)
Timing Gear Cover Bolts, lb-ft (Nm) ............... 18 (24)
Timing Gear Housing to Block Bolts, lb-ft (Nm) ............... 37 (50)
Oil Pan Mounting Bolts, lb-ft (Nm) ............... 18 (24)
Oil Pan Drain Plug, lb-ft (Nm) ............... 37 (50)
Oil Pump Cover Screws, lb-ft (Nm) ............... 9 (12)
Oil Pump Pick Up Tube Bolt, lb-ft (Nm) ............... 18 (24)
Oil Cooler Housing Bolts, lb-ft (Nm) ............... 18 (24)
Water Pump Mounting Bolts, lb-ft (Nm) ............... 18 (24)
Thermostat Housing Bolts, lb-ft (Nm) ............... 18 (24)
Intake Manifold Mounting Bolts, lb-ft (Nm) ............... 18 (24)
Exhaust Manifold Mounting Bolts (1-Step), lb-ft (Nm) ............... 15 (20)
Exhaust Manifold Mounting Bolts (2-Step), lb-ft (Nm) ............... 33 (45)
Turbocharger to Exhaust Manifold Nuts, lb-ft (Nm) ............... 33 (45)
Turbocharger Oil Supply Line Fitting, lb-ft (Nm) ............... 18 (24)
Turbocharger Oil Return Line Bolts, lb-ft (Nm) ............... 9 (12)
Fuel Injection Pump Cassette Mounting Bolts, lb-ft (Nm) ............... 26 (35)
Fuel Injection Lines Union Nuts, lb-ft (Nm) ............... 22 (30)
Fuel Injector Clamp Screws, lb-ft (Nm) ............... 20 (27)
Fuel Filter Base Mounting Bolts, lb-ft (Nm) ............... 18 (24)
Fuel Transfer Pump Mounting Bolts, lb-ft (Nm) ............... 18 (24)
Starter Motor Mounting Bolts, lb-ft (Nm) ............... 37 (50)
Alternator Mounting Bracket Bolts, lb-ft (Nm) ............... 37 (50)
Alternator Pivot Bolt, lb-ft (Nm) ............... 33 (45)
Alternator Tensioning Link Bolt, lb-ft (Nm) ............... 18 (24)
Fan Pulley Mounting Bolts, lb-ft (Nm) ............... 18 (24)
Belt Tensioner Mounting Bolt, lb-ft (Nm) ............... 37 (50)
Oil Pressure Switch, lb-ft (Nm) ............... 11 (15)
Coolant Temperature Sensor, lb-ft (Nm) ............... 15 (20)
Crankshaft Position Sensor Bolt, lb-ft (Nm) ............... 7 (10)
Glow Plugs, lb-ft (Nm) ............... 13 (18)
Balancer Shaft Drive Gear Bolt, lb-ft (Nm) ............... 30 (40)
Balancer Shaft Thrust Plate Bolts, lb-ft (Nm) ............... 9 (12)
Front Auxiliary Drive Pulley Bolt, lb-ft (Nm) ............... 59 (80)
Front Auxiliary Drive Housing Bolts, lb-ft (Nm) ............... 18 (24)
Flywheel Housing Access Cover Screws, lb-ft (Nm) ............... 7 (10)
Exhaust Pipe Flange Nuts, lb-ft (Nm) ............... 33 (45)
Crankcase Breather Valve Cap Screws, lb-ft (Nm) ............... 7 (10)
Fuel Leak Off Rail Return Screws, lb-ft (Nm) ............... 9 (12)
Main Oil Gallery End Plugs, lb-ft (Nm) ............... 26 (35)
Cylinder Block Drain Plug, lb-ft (Nm) ............... 22 (30)
Connecting Rod Journal Plugs, lb-ft (Nm) ............... 15 (20)
Piston Cooling Orifices Screws, lb-ft (Nm) ............... 7 (10)
Camshaft Rear Bore Cover Screws, lb-ft (Nm) ............... 9 (12)
Water Pump Internal Impeller Nut, lb-ft (Nm) ............... 26 (35)
Thermostat Cover Cap Screws, lb-ft (Nm) ............... 9 (12)
Fuel Injection Pump Gear Nut, lb-ft (Nm) ............... 59 (80)
Fuel Supply Line Banjo Bolts, lb-ft (Nm) ............... 15 (20)
Fuel Return Line Banjo Bolts, lb-ft (Nm) ............... 11 (15)
Oil Cooler Bypass Valve Plug, lb-ft (Nm) ............... 26 (35)
Oil Pressure Regulating Valve Plug, lb-ft (Nm) ............... 37 (50)
Turbocharger Compressor Housing Screws, lb-ft (Nm) ............... 7 (10)
Turbocharger Turbine Housing Screws, lb-ft (Nm) ............... 13 (18)
Turbocharger Actuator Bracket Bolts, lb-ft (Nm) ............... 7 (10)
Alternator Output Terminal Nut, lb-ft (Nm) ............... 4 (5)
Starter Motor Positive Terminal Nut, lb-ft (Nm) ............... 9 (12)
Starter Motor Solenoid Control Terminal Nut, lb-ft (Nm) ............... 4 (5)
Fan Drive Mounting Plate Bolts, lb-ft (Nm) ............... 37 (50)
Radiator Mount Bracket Screws, lb-ft (Nm) ............... 18 (24)
Muffler Clamp Nuts, lb-ft (Nm) ............... 22 (30)
Air Cleaner Housing Mounting Bolts, lb-ft (Nm) ............... 18 (24)
Electronic Governor Actuator Screws, lb-ft (Nm) ............... 4 (5)
Intake Air Temperature Sensor, lb-ft (Nm) ............... 15 (20)
Exhaust Gas Temperature Sensor, lb-ft (Nm) ............... 33 (45)
Turbocharger Speed Sensor, lb-ft (Nm) ............... 7 (10)
Fuel Temperature Sensor, lb-ft (Nm) ............... 11 (15)
Fuel Rail Pressure Sensor, lb-ft (Nm) ............... 52 (70)
Pressure Relief Valve Fuel Rail, lb-ft (Nm) ............... 74 (100)
Main Bearing Cap Side Bolts, lb-ft (Nm) ............... 26 (35)
Piston Cooling Jet Check Valve, lb-ft (Nm) ............... 22 (30)
Timing Gear Idler Shaft Bolt, lb-ft (Nm) ............... 37 (50)
Timing Gear Upper Idler Shaft Bolt, lb-ft (Nm) ............... 37 (50)
Oil Pump Idler Gear Shaft Bolt, lb-ft (Nm) ............... 26 (35)
Water Pump Impeller Shaft Retainer Nut, lb-ft (Nm) ............... 37 (50)
Thermostat Bypass Tube Union Nut, lb-ft (Nm) ............... 26 (35)
Coolant Bypass Hose Hose Clamps, lb-ft (Nm) ............... 4 (5)
Oil Cooler Internal Element Center Bolt, lb-ft (Nm) ............... 22 (30)
Oil Filter Header Mounting Bolts, lb-ft (Nm) ............... 18 (24)
Oil Pressure Relief Valve Spring Retainer Plug, lb-ft (Nm) ............... 37 (50)
Crankcase Breather Tube Bracket Bolt, lb-ft (Nm) ............... 9 (12)
Air Compressor Mounting Drive Housing Bolts, lb-ft (Nm) ............... 37 (50)
Air Compressor Drive Gear Retaining Nut, lb-ft (Nm) ............... 74 (100)
Air Compressor Support Bracket Screws, lb-ft (Nm) ............... 18 (24)
Fuel Injection Pump Supply Inlet Banjo Bolt, lb-ft (Nm) ............... 18 (24)
Fuel Injection Pump Return Outlet Banjo Bolt, lb-ft (Nm) ............... 15 (20)
Fuel Injector Nozzle Cap Nut, lb-ft (Nm) ............... 37 (50)
Fuel Injector Internal Pressure Spring Plug, lb-ft (Nm) ............... 26 (35)
Fuel Leak Off Return Line Clip Screws, lb-ft (Nm) ............... 4 (5)
Fuel Transfer Pump Inlet Fitting Joint, lb-ft (Nm) ............... 15 (20)
Alternator Rear Ground Strap Nut, lb-ft (Nm) ............... 7 (10)

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