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John Deere 4045D Specifications
| Engine Model: John Deere 4045D |
| Engine Type: 4-cycle inline 4-cylinder direct injection liquid-cooled diesel |
| Total Displacement: 276 cu.in (4.5 L) |
| Rated Engine Power: 85 Hp (63 kW) at 2400 rpm |
| Aspiration Type: Naturally aspirated |
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| General Technical Data |
The John Deere 4045D is a four-cylinder, naturally aspirated diesel engine forming a core model within John Deere's industrial power line. This engine is engineered for reliability and durability in a diverse range of stationary and mobile applications. Its direct injection, mechanically governed fuel system provides robust and simple operation, while the liquid-cooled, cast-iron construction ensures longevity under continuous load.
The 4045D is recognized for its operational
economy and serviceability, making it a preferred power source for
agricultural, industrial, and construction machinery where electronic
complexity is not required.
Engine Model: John Deere 4045D.
Engine Type: Four-stroke, direct injection, naturally aspirated diesel
engine.
Number of Cylinders: 4, in-line.
Bore: 106.5 mm (4.19 inches).
Stroke: 127.0 mm (5.00 inches).
Displacement: 4.5 liters (276 cubic inches).
Compression Ratio: 16.5:1.
Aspiration: Naturally aspirated.
Rated Power (Gross): 85 Hp (63 kW) at 2400 RPM. Net power varies by
application.
Peak Torque: 352 Nm at 1600 RPM. (260 lb-ft).
Firing Order: 1-3-4-2.
Rotation (flywheel end): Counterclockwise.
Governor Type: Mechanical, variable-speed minimum-maximum type.
Emissions Compliance: Meets Tier 2/Stage II emissions standards.
| Cylinder Block |
The cylinder block is a one-piece cast iron construction. It uses a deep-skirt design that enhances rigidity and reduces vibration. Cylinder liners are replaceable, dry-type units manufactured from centrifugally cast iron. The block incorporates five main bearing caps, also constructed from cast iron.
Main bearing caps are secured with two vertical bolts per cap. Internal oil galleries and coolant passages are cast into the block. A one-piece gear case cover, mounted on the front of the block, houses the timing gears and front seal.
| Cylinder Head and Valves |
The cylinder head is a single-piece cast iron component. It is secured to the block with a multi-bolt pattern requiring a specific tightening sequence. The head uses a direct injection configuration. It houses two valves per cylinder: one intake and one exhaust.
Valve seats are induction hardened for wear resistance. Valve guides are replaceable. Valve actuation is via pushrods and rocker arms from a single camshaft located within the cylinder block. The camshaft is gear-driven from the crankshaft. Valve stem seals control oil consumption.
| Fuel System |
The fuel system is a direct injection, mechanically governed system. A rotary-type injection pump, driven by the engine timing gears, delivers high-pressure fuel to individual injector lines. Unit injectors, one per cylinder, atomize fuel directly into the combustion chamber.
The system’s mechanical governor regulates fuel delivery to maintain the set engine speed under load variation. The fuel supply circuit includes a primary sediment filter with a water separator and a secondary spin-on fuel filter. A mechanical lift pump transfers fuel from the tank.
| Lubrication System |
The lubrication system is a forced-feed, full-flow filtration design. A gear-type oil pump, driven from the front gear train, draws oil from the sump through a pickup tube and screen. Oil is pumped through a full-flow, replaceable spin-on oil filter. An engine coolant-cooled oil cooler is standard equipment.
Pressurized oil is delivered to the crankshaft main and connecting rod bearings, the camshaft bearings, the rocker arm shaft, and the valve train. The engine oil capacity is 10.2 liters (2.7 U.S. gallons). Oil must meet John Deere Plus-50 II or equivalent API CJ-4, ACEA E7 specifications.
| Cooling System |
The engine uses a pressurized, forced-circulation liquid cooling system. A centrifugal water pump, belt-driven from the crankshaft, circulates coolant. Coolant flows through the cylinder block, cylinder head, and oil cooler. System temperature is regulated by a thermostatic valve.
The system is designed for use with a radiator and fan. Coolant must be a 50/50 mixture of clean water and ethylene glycol antifreeze with a supplemental coolant additive (SCA). Total coolant capacity is 14 liters (3.7 U.S. gallons).
| Other Systems |
Starting System: A 12-volt electrical system with a solenoid-actuated
starter motor.
Charging System: A 12-volt, 65-ampere alternator with an integrated
voltage regulator.
Air Intake System: Includes a dry-type, two-stage air filter.
Exhaust System: Vertical exhaust outlet is standard.
Engine Braking: Not equipped.
| Dimensions and Weight |
Length (from flywheel housing to front pulley): 847 mm (33.3 inches).
Width (over valve cover): 668 mm (26.3 inches).
Height (over valve cover): 832 mm (32.8 inches).
Dry Weight (engine only): 435 kg (959 lbs).
| Maintenance Data |
Engine Oil Change Interval: 250 hours or annually for severe service.
Oil Filter Change: Every oil change interval.
Fuel Filter Primary (water separator): Drain water daily. Replace
element every 250 hours.
Fuel Filter Secondary: Replace every 500 hours.
Coolant: Test SCA concentration every 250 hours; replace coolant every
3000 hours or 3 years.
Air Filter Element: Service or replace based on restriction indicator.
Valve Clearance Adjustment (cold engine): Intake valve: 0.36 mm (0.014
inches). Exhaust valve: 0.46 mm (0.018 inches). Check every 1000 hours.
Belt Tension: Check and adjust fan/alternator belt tension every 250
hours.
| Tightening Torques |
Cylinder Head Bolts: Multi-stage sequence required. Initial stage: 102
Nm. (75 lb-ft). Second stage: 149 Nm. (110 lb-ft). Final stage: Tighten
an additional 50 to 70 deg angular rotation.
Main Bearing Cap Bolts: 115 Nm. (85 lb-ft).
Connecting Rod Cap Bolts: Initial torque 54 Nm. (40 lb-ft), then tighten
an additional 90 to 100 deg angular rotation. Rocker Arm Shaft Bracket
Bolts: 61 Nm. (45 lb-ft).
Oil Pan Bolts: 27 Nm. (20 lb-ft).
Flywheel to Crankshaft Bolts: 163 Nm. (120 lb-ft).
| Machinery Applications |
The John Deere 4045D is engineered for a broad spectrum of industrial and agricultural machinery. Its primary applications include agricultural tractors in the mid-power range, such as various John Deere 5000 Series tractors. The engine is common in industrial power units, driving hydraulic systems for log splitters, balers, and irrigation pumps.
It serves as a prime mover for generator sets in the 30-50 kVA range. Additional uses include powering air compressors, skid-steer loaders, and small construction equipment like rollers and trenchers. The engine's mechanical simplicity and proven durability make it a staple in equipment requiring reliable, continuous-duty power.
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