John Deere 4219DF Specifications
| Engine Model: John Deere 4219DF |
| Engine Type: 4-cycle inline 4-cylinder naturally aspirated liquid-cooled diesel |
| Total Displacement: 219.4 cu.in (3.6 L) |
| Rated Engine Power: 68 Hp (51 kW) at 2500 rpm |
| Fuel System Type: Direct fuel injection |
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The John Deere 4219DF is a 3.6-liter,
four-cylinder, naturally aspirated diesel engine designed for
agricultural and industrial service. This power plant represents a
mechanically governed, direct injection engine known for its durability
and fuel efficiency in medium-duty applications. Its architecture
prioritizes simplicity, serviceability, and long-term reliability in
conditions demanding consistent torque and power.
The engine employs a robust valve-in-head design with a camshaft
situated in the cylinder block. The 4219DF delivers an output in the
range of 68 Hp and has a historical application in a series of John
Deere utility tractors and stationary equipment. Its design reflects an
engineering focus on operator-friendly maintenance and sustained
performance over extended service intervals.
Engine Type: 4-cylinder, inline, 4-stroke cycle, vertical, liquid-cooled
diesel.
Combustion System: Direct injection.
Aspiration: Naturally aspirated.
Rotation: Counterclockwise when viewed from the flywheel end.
Firing Order: 1-3-4-2.
Bore: 102.0 mm (4.02 inches).
Stroke: 110.0 mm (4.33 inches).
Displacement: 3.6 liters (219.4 cubic inches).
Compression Ratio: 17.0:1.
Governor Type: Mechanical, minimum-maximum speed.
Rated Power Output: 51 kW (68 Hp) at 2500 crankshaft rpm.
High Idle Speed: Governed setting per application.
Low Idle Speed: 750 to 800 crankshaft rpm.
Fuel Shutoff: Mechanical or manual control.
Dry Weight: 340 kg (750 lbs), subject to configuration.
The cylinder block is a single-piece, high-strength gray iron casting.
It employs a deep-skirt design that contributes to structural integrity
and dampens operational vibrations. The cylinder bores are integral to
the block casting, machined and honed to precise dimensions and surface
finish to ensure correct piston ring function and longevity. The
crankshaft is supported by five main bearings.
Main bearing caps are fabricated from forged steel and are secured with
two vertical bolts each. The block incorporates a one-piece rear seal
housing and provides mounting provisions for ancillary components. The
design facilitates coolant flow around cylinder bores and includes
internal galleries for lubricating oil distribution.
The cylinder head is a cast iron, single-piece component. It employs a
crossflow port design with individual intake and exhaust ports for each
cylinder. The head accommodates two valves per cylinder: one intake and
one exhaust. Valve seats are integrally cast and machined. Intake and
exhaust valves are manufactured from heat-resistant steel alloys, with
exhaust valves receiving additional hardening for thermal durability.
Valve guides are cast integral to the head. Valve actuation uses
shaft-mounted, individual rocker arms. Valve lash is set manually via
screw-type adjusters on the rocker arms. The camshaft is located in the
cylinder block, operating the valves through solid lifters and pushrods.
The cylinder head uses a single, multilayer steel head gasket.
The fuel system is a direct injection, pump-line-nozzle configuration. A
camshaft-driven, plunger-type transfer pump supplies fuel from the tank
to the injection pump. The system includes a primary fuel filter with a
sediment bowl and a replaceable secondary filter element. The injection
pump is an in-line, plunger-type unit (John Deere model) with integral
mechanical governor.
The governor regulates fuel delivery to maintain engine speed under
varying loads. High-pressure steel lines connect the injection pump to
each injector. The injectors are multi-hole, pencil-type units that
atomize fuel directly into the combustion chamber. A manual rack stop
lever or cable provides a fuel shutoff function.
The lubrication system is a full-pressure, gear-driven design. A
gear-type oil pump, driven from the crankshaft, draws oil from the oil
pan through a pickup tube and screen. Pressurized oil flows through a
full-flow, replaceable spin-on oil filter. After filtration, oil is
distributed via main galleries to the crankshaft main bearings,
connecting rod bearings, and camshaft bearings.
A dedicated passage supplies oil to the valve rocker shaft assembly. The
system lubricates the cylinder walls and piston pins via oil splash. A
pressure relief valve, located in the oil pump or gallery, maintains
system pressure within design parameters. The total oil system capacity
is 7.6 liters (8.0 U.S. quarts) with filter change. Oil meeting
performance classification CC or CD is specified.
The cooling system is a pressurized, liquid-cooled, pump-circulated
design. A centrifugal water pump, belt-driven from the crankshaft
pulley, circulates coolant. Coolant flow is directed first through the
cylinder block, then upward into the cylinder head, and finally to the
radiator.
A wax-pellet-type thermostat regulates coolant temperature by
controlling flow to the radiator. System pressure is maintained by a
radiator pressure cap, usually set for 55 kPa (8 psi). A belt-driven fan
draws air through the radiator core. The total coolant capacity is 10.4
liters (11.0 U.S. quarts). A 50/50 mixture of ethylene-glycol antifreeze
and water is required for frost protection and corrosion inhibition.
Electrical System: The engine employs a 12 Volt electric starting system
with a gear-reduction starter motor. A 12 Volt alternator, belt-driven,
provides charging current. Pre-combustion chamber glow plugs, energized
via a key-switch controlled timer, assist in cold-weather starting.
Air Intake System: A dry-type, replaceable paper element air cleaner is
standard. The intake manifold is a cast iron component. Exhaust System:
The exhaust manifold is a one-piece cast iron design.
Flywheel and Housing: The engine uses a SAE standard flywheel housing.
The flywheel is a cast iron, machined component with a ring gear for
starter engagement. Flywheel configuration is application-dependent.
Compression Release: A manual compression release mechanism is
incorporated into the valve train to reduce cranking effort during
starting.
Overall Length (Front of damper to rear of flywheel housing): 760 mm
(29.9 in).
Overall Width (Maximum at valve cover): 610 mm (24.0 in).
Overall Height (Top of valve cover to bottom of oil pan): 780 mm (30.7
in).
Dry Weight (Engine, less coolant and oil, standard accessories): 340 kg
(750 lbs).
Engine Oil Change Interval: 100 service hours or annually. Oil Filter
Change: Replace with every oil change. Fuel Filter (Primary/Secondary)
Service: Drain sediment bowl daily; replace secondary filter element
every 500 service hours. Air Filter Element Service: Clean element every
100 service hours; replace as required based on service conditions.
Coolant Change Interval: 2000 service hours or 2 years.
Valve Lash Adjustment (Cold Setting): Intake valve: 0.15 mm (0.006 in);
Exhaust valve: 0.20 mm (0.008 in). Inspect and adjust every 1000 service
hours. Fuel Injection Pump Timing: Set according to factory
specification; inspection recommended every 2000 service hours.
Injection Nozzle Service: Test spray pattern and opening pressure every
2000 service hours. Fan Drive Belt Tension: Adjust to 13 mm (0.5 in)
deflection under moderate thumb pressure.
Cylinder Head Bolts: Torque in specified sequence to 95 Nm (70 lb-ft),
then final tighten an additional 1/4 turn (90 deg). Main Bearing Cap
Bolts: 160 Nm (118 lb-ft).
Connecting Rod Cap Nuts: 85 Nm (63 lb-ft) followed by a 60-degree angle
tighten.
Flywheel to Crankshaft Bolts: 115 Nm (85 lb-ft).
Rocker Arm Shaft Bracket Bolts: 55 Nm (41 lb-ft).
Injector Clamp Bolt: 35 Nm (26 lb-ft).
Oil Pan Bolts: 24 Nm (18 lb-ft).
Water Pump Mounting Bolts: 40 Nm (30 lb-ft).
The John Deere 4219DF engine was principally installed in a series of
John Deere agricultural tractors. Specific tractor models include the
John Deere 1830, 2030, 2120, and 2130. These tractors are utility and
row-crop models employed for light to medium-duty farming operations,
loader work, and as power units for implements. Beyond agricultural
tractors, this engine platform was also used in various industrial
applications.
These uses include power generation sets, irrigation pumps, and
stationary equipment requiring a reliable, mechanically controlled
diesel power source. The engine's design characteristics made it
suitable for applications where electronic complexity was undesirable
and mechanical robustness was paramount.
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