John Deere 6359D Specifications
| Engine Model: John Deere 6359D |
| Engine Type: 4-stroke in-line 6-cylinder liquid-cooled diesel |
| Total Displacement: 359 cu.in (5.9 L) |
| Rated Engine Power: 90-117 Hp (67-87 kW) at 2400 rpm |
| Fuel System Type: Direct Injection |
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The John Deere 6359D is a 5.9-liter, naturally
aspirated inline-six diesel engine produced by John Deere as part of the
300-series engine family. This engine represents the six-cylinder
configuration of a broader family that includes three-cylinder (3-179D)
and four-cylinder (4-239D) variants. The "D" designation indicates a
naturally aspirated diesel, distinguishing it from later turbocharged or
intercooled versions such as the 6359T.
The 6359D was engineered for use in agricultural tractors, combines,
cotton pickers, and construction equipment requiring moderate power
output with exceptional durability and serviceability. The engine
features a replaceable wet sleeve cylinder liner design, a mechanical
direct injection fuel system, and a cast iron construction that provides
long service life under continuous heavy-load operation.
Production spanned from approximately the early 1980s through the late
1990s, with the engine powering numerous John Deere 40-series,
50-series, and 55-series tractors. The 6359D was eventually superseded
by turbocharged variants offering higher power density, but its
reputation for reliability and rebuildability sustains ongoing demand in
the used parts market.
Engine Type: Inline-6, four-stroke, naturally aspirated, diesel.
Displacement: 359 cu.in (5.9 L).
Bore: 4.19 in (106.5 mm).
Stroke: 4.33 in (110.0 mm).
Compression Ratio: 16.2:1 for standard naturally aspirated.
Firing Order: 1-5-3-6-2-4.
Rated Power: 90-117 hp (67-87 kW).
Rated Engine Speed: 2,400 rpm for most applications.
Maximum Torque: 290 lb-ft (393 Nm) at 1,400 rpm.
The cylinder block is constructed from high-strength cast iron with a
deep-skirt design for maximum rigidity under continuous load. The block
incorporates seven main bearing bulkheads, providing exceptional
crankshaft support for the inline-six configuration. The most
significant design feature is the replaceable wet sleeve cylinder liner
arrangement. Each cylinder receives an individual liner with an overall
length of 7.720 in (196.93 mm) and a bore diameter of 106.5 mm. The
lower portion of each liner is sealed by O-rings pressed into the
cylinder block, preventing coolant migration into the crankcase while
allowing the liner to expand uniformly with heat.
This wet sleeve design permits complete engine overhaul without removing
the block from the vehicle chassis, a critical advantage for
agricultural and construction equipment where downtime directly impacts
revenue. The block includes an integral oil sump mounting flange with a
gasket sealing surface machined for uniform clamping pressure. A
side-mounted injection pump mounting pad is cast into the right side of
the block, while the left side features provisions for the oil filter
housing and alternator mounting bracket. The block also incorporates
cooling passages that direct coolant flow around the full circumference
of each cylinder liner for uniform thermal management.
The cylinder head is a single-piece cast iron unit with a cross-flow
design, locating the intake ports on the right side and the exhaust
ports on the left side of the engine. This configuration improves
volumetric efficiency by separating hot exhaust gases from the cooler
intake charge. The head incorporates a pre-combustion chamber design or
direct injection bowl-in-piston combustion chamber, depending on the
specific application and injection system configuration.
The valvetrain operates on an overhead valve (OHV) configuration with
pushrods and rocker arms. The camshaft is located within the cylinder
block and driven by a gear train from the crankshaft. Each cylinder
receives two valves: one intake and one exhaust. Valve stem diameter is
0.375 in (9.53 mm) for both intake and exhaust valves. The valves are
arranged in a single row along the cylinder head centerline, actuated by
individual rocker arms mounted on a single shaft. Valve seat inserts are
pressed into the cylinder head and machined to a 45-degree face angle
for positive sealing. Valve springs are single-coil type with harmonic
dampers to control surging across the engine speed range.
The rocker arm assembly is supported on a steel shaft running the length
of the cylinder head. Individual screw-type adjusters with locking nuts
provide precise valve lash adjustment without requiring removal of the
rocker arm assembly.
The fuel system employs a mechanical direct injection design with a
distributor-type injection pump. Pump suppliers included Stanadyne
(Roosa Master) and Bosch, depending on the specific application and
production date. The injection pump is mounted on the right side of the
cylinder block and driven by a gear from the camshaft.
The injection pump performs three functions: pressurizing fuel to
injection pressure, metering the precise quantity of fuel for each
injection event, and distributing fuel to the correct cylinder at the
correct time. The pump incorporates a mechanical governor that maintains
engine speed under varying loads by adjusting fuel delivery. This
governor is essential for PTO-driven implements, as it prevents engine
speed drop when heavy loads are applied. The fuel shutoff solenoid,
controlled by the ignition switch, cuts fuel delivery to stop the
engine.
High-pressure injection lines carry fuel from the pump to individual
injectors mounted in the cylinder head. Injectors are of the
nozzle-and-holder type, calibrated to open at a specific pressure,
delivering fuel in a fine spray pattern for complete combustion. A
secondary hand-priming pump is mounted on the injection pump to bleed
air from the system after filter changes or maintenance. A replaceable
spin-on fuel filter is mounted between the fuel transfer pump and the
injection pump.
The lubrication system is a fully pressurized, wet-sump design with a
gear-type oil pump mounted inside the oil pan. The oil pump draws
through a screened pickup tube and delivers oil to a full-flow, spin-on
type oil filter mounted on the left side of the cylinder block. From the
filter, oil circulates through main oil galleries drilled longitudinally
through the block, supplying the crankshaft main bearings, connecting
rod bearings, camshaft bearings, and the rocker arm assembly through
external oil feed lines.
An oil pressure relief valve, integrated into the oil pump housing,
opens at approximately 60-65 psi (414-448 kPa) to prevent
over-pressurization during cold starts. Normal operating oil pressure
ranges from 35-50 psi (241-345 kPa) at rated speed. A used running
engine has been observed producing 55 psi at idle and 75 psi at full
throttle, indicating the robust condition possible with the design. Oil
capacity varies by chassis application, ranging from 11.4 L (12.0 US qt)
for the John Deere 3640 to 15.1 L (16.0 US qt) for larger chassis
configurations.
The lubrication system also supplies oil to the piston cooling jets,
which spray oil against the underside of each piston crown for thermal
management under sustained heavy loads.
The cooling system is a pressurized, thermostatically controlled liquid
cooling setup with a belt-driven centrifugal water pump. Coolant
circulates from the radiator lower tank through the water pump, into the
cylinder block water jacket, upward through the cylinder head, and
returns to the radiator upper tank through a cast outlet at the front of
the head. The system includes a wax-type thermostat with a nominal
opening temperature of 180°F (82°C). A bypass circuit permits coolant
circulation within the engine during warm-up, bypassing the radiator
until operating temperature is reached.
Coolant capacity varies by chassis application. For the engine alone,
capacity ranges from 13.0-15.0 L (14-16 US qt). In the John Deere 3640
tractor, total system capacity including radiator is 19.0 L (20.1 US
qt). The system is pressurized to 7-10 psi (48-69 kPa) by a radiator cap
with a pressure relief valve, raising the boiling point of the coolant.
A belt-driven fan, mounted on the water pump hub and enclosed in a fan
shroud, draws air through the radiator core. The fan shroud is essential
for maintaining cooling airflow at low engine speeds common in PTO
applications.
Electrical System: The engine uses a 12-volt electrical system with
negative ground. A belt-driven alternator with a nominal output of 55
amperes supplies charging current. A starter motor with solenoid
engagement cranks the engine through a ring gear mounted on the
flywheel. Some industrial applications offered a 24-volt electrical
system option.
Starting System: The starter motor is a gear-reduction type for high
cranking torque relative to electrical draw. Newer replacement units use
gear reduction designs for improved cold-starting performance.
Air Intake System: A dry-type air cleaner with a replaceable paper
filter element is mounted on the intake side of the engine. Some tractor
applications use a dual-element air cleaner with a primary filter and a
secondary safety filter. A restriction indicator mounted in the cab
alerts the operator when the filter requires service.
Governor System: The mechanical governor is integrated into the
injection pump housing. A flyweight mechanism senses engine speed and
adjusts the fuel control rack position to maintain the selected engine
speed. An operator-controlled throttle lever sets the desired governed
speed.
Overall length from the front gear train cover to the flywheel housing
mounting face is 1,200 mm (47 in). Width, measured across the cylinder
head and injection pump, is 700 mm (28 in). Height from the oil pan rail
to the top of the valve cover is 900 mm (35 in). The complete engine dry
weight is 1,100 lb (500 kg). The cast iron cylinder block alone
contributes significantly to this mass, providing the rigidity required
for sustained heavy-load operation.
Engine Oil Capacity: With filter change, 11.4-15.1 L (12.0-16.0 US qt)
depending on chassis. John Deere 3640 uses 11.4 L (12.0 US qt). Oil
Pressure: Normal operating range is 35-50 psi (241-345 kPa) at rated
speed. Minimum acceptable pressure at hot idle is 15 psi (103 kPa).
Coolant Capacity: Engine only, 13.0-15.0 L (14-16 US qt). With radiator,
up to 19.0 L (20.1 US qt) as in the John Deere 3640. Thermostat Opening
Temperature: 180°F (82°C).
Valve Lash Adjustment: Required as part of scheduled maintenance.
Clearances are measured with the engine cold. Intake: 0.014 in (0.36
mm). Exhaust: 0.018 in (0.46 mm). Injection Pump Timing: Set to
specifications provided on the pump data plate. Base timing is expressed
in degrees before top dead center and varies by application. Injector
Opening Pressure: Calibrated to 2,500-2,800 psi (17,200-19,300 kPa)
depending on injection pump model.
Valve Stem Diameter: 0.375 in (9.53 mm) for both intake and exhaust
valves. Piston Pin Diameter: 1.375 in (34.93 mm). Cylinder Liner
Protrusion: Wet sleeves require 0.001-0.003 in (0.03-0.08 mm) protrusion
above the block deck surface for proper head gasket sealing. Main
Journal Diameter: 3.1230-3.1240 in (79.32-79.35 mm). Rod Journal
Diameter: 2.7480-2.7490 in (69.80-69.82 mm).
Air Cleaner Service: Dry-type element requires replacement when
restriction indicator shows red or after 500 operating hours under
normal conditions. More frequent service is required in dusty
environments. Fuel Filter Replacement: Replace spin-on fuel filter every
250 operating hours. Prime the system using the hand-priming pump after
filter changes. Valve Adjustment Interval: Every 1,000 operating hours
or as indicated by increased engine noise. Adjust with engine cold and
the piston of each cylinder at top dead center on the compression
stroke.
Cylinder Head Bolts (Short bolts): 95 lb-ft (129 Nm).
Cylinder Head Bolts (Long bolts): 110 lb-ft (149 Nm).
Connecting Rod Cap Bolts (Black bolts): 52 lb-ft (70 Nm).
Connecting Rod Cap Bolts (Silver bolts) 63 lb-ft (85 Nm).
Main Bearing Cap Bolts: 85 lb-ft (115 Nm).
Flywheel Bolts: 85 lb-ft (115 Nm).
Rocker Arm Shaft Bracket Bolts: 25-30 lb-ft (34-41 Nm).
Camshaft Thrust Plate Bolts: 18-22 lb-ft (24-30 Nm).
Intake Manifold Nuts: 25-30 lb-ft (34-41 Nm).
Exhaust Manifold Nuts: 20-25 lb-ft (27-34 Nm).
Injection Pump Mounting Nuts: 20-25 lb-ft (27-34 Nm).
Injector Hold-Down Clamp Bolts: 25-30 lb-ft (34-41 Nm).
Oil Pan Bolts: 12-15 lb-ft (16-20 Nm).
Valve Cover Bolts: 6-8 lb-ft (8-11 Nm).
Water Pump Mounting Bolts: 25-30 lb-ft (34-41 Nm).
Crankshaft Pulley Bolt: 200-220 lb-ft (271-298 Nm).
Starter Motor Mounting Bolts: 35-40 lb-ft (47-54 Nm).
Glow Plug Torque: 12-15 lb-ft (16-20 Nm).
The John Deere 6359D engine was widely used across agricultural,
construction, and industrial equipment manufactured from approximately
1981 to 1999.
Agricultural Tractors (40-Series):
John Deere 2940, 3040, 3140, 3640. The 3640 produced 117 hp (87.2 kW) at
2,400 rpm with 17.4:1 compression.
Agricultural Tractors (50-Series):
John Deere 2950, 3050, 3150, 3350. The 2950 used the 6359DL variant.
Agricultural Tractors (55-Series):
John Deere 2155, 2255, 2955, 3055, 3155.
Other Tractor Models: John Deere
840, 940, 1040, 1140, 1550, 1630, 1640, 1750, 1840, 1850, 2040, 2130,
2150, 2240, 2250, 2350, 2450, 2550, 3340. Also including Renault Ceres
75 and 320 series tractors using the same engine under license.
Combine Harvesters: John Deere 955,
975, 985, 1055, 1075 combines. Also 4420, 4425, 4435 models.
Cotton Harvesting Equipment: John
Deere 484, 7440 cotton strippers; 9910 and 9920 cotton pickers.
Construction Equipment:
Wheel Loaders: John Deere 444D.
Motor Graders: John Deere 570B.
Backhoe Loaders: John Deere 210C, 310C, 315C, 415B.
Crawlers: John Deere 350D, 355D, 400G.
Excavators: John Deere 70, 70D, 290D.
Industrial and Power Unit Applications:
Power Units: John Deere 6359D power unit used for stationary
applications such as irrigation pumps, generators, and industrial
drives.
Forklifts: John Deere 482C.
Sprayers: John Deere 6000 series.
Windrowers: John Deere 2360, 3430.
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