John Deere 4239TF001 Specifications
| Engine Model: John Deere 4239TF001 |
| Engine Type: 4-stroke in-line 4-cylinder turbocharged liquid-cooled diesel |
| Total Displacement: 239 cu.in (3.9 L) |
| Rated Engine Power: 100-110 Hp (75-82 kW) at 2500 rpm |
| Fuel System Type: Direct Injection |
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The John Deere 4239TF001 is a 3.9-liter, inline
4-cylinder diesel engine from the 300-series family, designed for
agricultural, construction, and industrial applications. The "TF"
designation indicates a turbocharged, fixed-geometry aspiration system
without an intercooler. This engine is renowned for its durability,
using replaceable wet cylinder liners and a robust cast iron
construction.
It operates on a mechanical direct injection fuel system with a
Stanadyne rotary distributor pump, offering straightforward
serviceability. The engine produces between 100 and 110 horsepower,
making it suitable for mid-range tractors, backhoes, dozers, and various
stationary power units. It features a counterclockwise rotation when
viewed from the flywheel end.
Engine Type: 4-cycle, turbocharged, inline 4-cylinder diesel
Family: John Deere 300-series
Displacement: 239 cu-in (3.9 L)
Bore x Stroke: 4.19 in x 4.33 in (106.5 mm x 110 mm)
Compression Ratio: 16.2:1
Firing Order: 1-3-4-2
Rotation (facing flywheel): Counterclockwise
Rated Power: 100-110 hp (75-82 kW) at 2500 rpm
Peak Torque: 250-265 lb-ft (340-360 Nm) at 1400-1600 rpm
Rated Speed: 2500 rpm
Low Idle Speed: 800-950 rpm
Aspiration: Turbocharged, fixed geometry (no intercooler)
The cylinder block is constructed from high-grade cast iron with a
deep-skirt design for enhanced rigidity. It incorporates five main
bearing supports to maintain crankshaft alignment under heavy loads. A
distinctive feature of this engine family is the use of replaceable wet
cylinder liners.
These liners are in direct contact with the engine coolant, providing
superior heat dissipation from the combustion chamber. The block
includes integral passages for the cooling and lubrication systems. The
wet liner design allows for overhaul without replacing the entire block,
extending the service life of the engine in demanding applications.
The cylinder head is manufactured from cast iron to match the thermal
expansion characteristics of the block, ensuring a reliable sealing
interface. It utilizes an overhead valve (OHV) configuration with two
valves per cylinder, totaling eight valves for the entire engine. The
valve train includes pushrods and rocker arms actuated by a camshaft
located within the cylinder block. Intake and exhaust valves are fitted
with rotators to prevent carbon buildup and ensure even wear.
The valve seat inserts are induction-hardened to withstand the
mechanical and thermal stresses of turbocharged operation. Valve
clearance adjustment is performed by turning an adjusting screw on the
rocker arm while holding a locknut.
The engine employs a mechanical direct injection system operating at
pressures sufficient for efficient atomization without an electronic
control unit. The injection pump is a Stanadyne (Roosa Master) DB2 or
DB4 series rotary distributor pump. This pump meters and distributes
fuel to individual injection lines leading to each cylinder.
Injectors are of the pencil-type design with a preset opening pressure.
The fuel system includes a manual primer pump located on the secondary
fuel filter housing to assist with priming after filter changes. A fuel
transfer pump, mounted on the injection pump, draws fuel from the tank
through a primary filter before supplying the secondary filter and
injection pump.
Oil Capacity (including filter): 9.0-12.7 US qt (8.5-12.0 L)
Oil Pressure at rated speed: 35-50 psi (2.4-3.4 bar)
Oil Pressure at low idle: Minimum 10 psi (0.7 bar)
Recommended Oil Grade: SAE 15W-40 (API CI-4 or higher)
Oil Filter: Full-flow spin-on type with integral bypass valve
System Features: Gear-type oil pump mounted on the front of the
crankshaft. Includes a piston cooling jet system that directs oil spray
to the underside of each piston crown for temperature management.
Coolant Capacity (engine only): Approx. 9.0 US qt (8.5 L)
Thermostat opening temperature: 180°F (82°C)
Coolant Type: Ethylene glycol-based with corrosion inhibitors
Water Pump: Belt-driven centrifugal type
System Features: A bypass thermostat maintains rapid warm-up. The
radiator capacity depends on the specific vehicle application. The
coolant pump circulates fluid through the cylinder block, cylinder head,
and a separate oil cooler mounted on the side of the engine block.
| Intake and Exhaust Systems |
Air Intake System: Dry-type air cleaner with a restriction indicator.
The turbocharger (fixed geometry) is mounted on the exhaust manifold
side.
Exhaust System: Cast iron manifold with a turbocharger mounting flange.
The turbocharger is oil-cooled via a supply line from the main oil
gallery.
Electrical System: 12-volt (standard) or 24-volt (optional for
construction equipment).
Starter Motor: 12V or 24V, pre-engaged type.
Alternator: 12V or 24V, 40-65 ampere output depending on application.
Governor: Mechanical centrifugal type integrated into the injection
pump, providing variable speed control.
Dry Weight (without accessories): 805 lb (365 kg)
Length (front to rear): 30.3 in (769 mm)
Width: 22.5 in (572 mm)
Height: 31.5 in (800 mm)
Oil Pan Depth: Variable (shallow for tractors, deep for industrial
units)
Engine Oil Change Interval: 250 hours under normal conditions.
Engine Oil Change Interval: 150 hours severe service.
Oil Filter Change: Every oil change.
Fuel Filter Change (secondary): 500 hours.
Fuel Filter Change (primary): 250 hours or as indicated by water-in-fuel
sensor.
Valve Clearance (Intake and Exhaust - cold engine): 0.014 in (0.36 mm).
Valve Clearance Inspection Interval: 1000 hours.
Air Cleaner Service: When restriction indicator shows red or at 500
hours max.
Coolant Change Interval: 2000 hours or 24 months.
Wet Liner Protrusion above block deck: 0.001-0.005 in (0.03-0.13 mm).
Idle Speed Adjustment (low idle): 800-950 rpm.
High Idle Speed (no load): 2725-2775 rpm.
Cylinder Head Bolts (final step): 110 lb-ft (150 Nm)
Connecting Rod Bolts: 65 lb-ft (90 Nm)
Main Bearing Cap Bolts: 85 lb-ft (115 Nm)
Flywheel Bolts: 85 lb-ft (115 Nm)
Flywheel Housing Bolts: 40 lb-ft (55 Nm)
Crankshaft Pulley Bolt: 200 lb-ft (270 Nm)
Rocker Arm Shaft Bracket Bolts: 18 lb-ft (25 Nm)
Valve Rocker Adjusting Locknut: 12 lb-ft (17 Nm)
Injection Nozzle Holder (injector nut): 44 lb-ft (60 Nm)
Injection Pump Drive Gear Nut: 65 lb-ft (88 Nm)
Oil Pan Bolts: 18 lb-ft (24 Nm)
Water Pump Mounting Bolts: 18 lb-ft (24 Nm)
Starter Motor Mounting Bolts: 32 lb-ft (44 Nm)
Front Timing Gear Cover Bolts: 15 lb-ft (20 Nm)
Wet Liner Flange Retaining Screws (if removable): 10 lb-ft (14 Nm)
The John Deere 4239TF001 engine appears in numerous vehicles and
machinery produced from the mid-1980s through the late 1990s.
Agricultural Tractors: John Deere 2555, 2755, 2855 (turbocharged
versions only). Also found in the 2355 and 2655 models offered in select
markets.
Construction Backhoes: John Deere 310C Turbo, 410C, 510C, 510D, and 710B
backhoe loaders.
Construction Dozers: John Deere 450E, 450G, 550E, and 550G crawler
dozers.
Excavators: John Deere 490D hydraulic excavator.
Industrial Power Units: High-output stationary units for portable air
compressors, hydraulic pump drives, agricultural irrigation pumps, wood
chippers, and concrete mixers. These units often include a radiator,
fuel tank, and instrument panel as a package.
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