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John Deere 4045AFM85 Engine

General Technical Data

Engine Specifications

Engine Model ............... John Deere PowerTech 4045AFM85
Engine Type ............... 4-cycle inline 4-cylinder direct injection liquid-cooled marine diesel
Number of Cylinders ............... 4
Cylinder Arrangement ............... In-line
Engine Bore, in (mm) ............... 4.21 (107.0)
Engine Stroke, in (mm) ............... 5.00 (127.0)
Displacement, cu.in (L) ............... 275 (4.5)
Rated Engine Power, hp (kW) ............... 160-225 (119-168)
Rated Engine Speed, rpm ............... 2300-2600
Peak Torque ............... 502 lb-ft (681 Nm) at 2000-2100 rpm
Idle Speed ............... 600 rpm
Aspiration Type ............... Turbocharged and air-to-coolant aftercooled
Operating Speed ............... 2300-2600 rpm
Compression Ratio ............... 16.7:1
Firing Order ............... 1-3-4-2
Combustion System ............... High pressure common rail direct injection structure
Valves Per Cylinder ............... 4 overhead valves activated by pushrods
Crankshaft Type ............... Forged steel with induction hardened journals
Camshaft Type ............... Gear-driven steel alloy monoblock
Piston Type ............... Articulated or single piece aluminum alloy with oil cooling gallery
Cylinder Block Type ............... Cast iron with replaceable wet liners
Cylinder Head Type ............... Cast iron 4-valve per cylinder design
Lubrication System ............... Full-pressure force-feed system
Oil Pump Type ............... Gear-driven displacement pump
Oil Filter Type ............... Full-flow spin-on cartridge element
Cooling System ............... Liquid-cooled heat exchanger or keel-cooled configurations
Water Pump Type ............... Belt-driven centrifugal fresh water pump
Air Cleaner Type ............... Dry heavy-duty cleanable element
Emissions Certification ............... EPA Commercial Marine Tier 3 and IMO MARPOL Annex
Starting System ............... Electric starter motor assembly
Electrical System ............... 12V or 24V isolated ground options

Fuel System

Injection Pump Type ............... High pressure common rail electronic pump assembly
System Fuel Pressure, psi (bar) ............... 23200-29000 (1600-2000)
Fuel Injection Control ............... Electronic engine control unit actuated solenoid valves
Fuel Transfer Pump ............... Electric self-priming booster pump mechanism
Governor Type ............... Full electronic control unit management
Primary Fuel Filter ............... Water separator spin-on element with 10 micron rating
Secondary Fuel Filter ............... High efficiency spin-on element with 2 micron rating
Fuel Return Flow Rate, gal/hr (L/h) ............... 32.0 (121.0)
Max Fuel Inlet Temperature, deg F (deg C) ............... 104 (40.0)
Max Fuel Inlet Restriction, in.Hg (kPa) ............... 6.0 (20.0)
Max Fuel Return Pressure, in.Hg (kPa) ............... 10.0 (34.0)
Fuel Leak-off System ............... Low pressure return manifold line routed to main line
Fuel Injector Type ............... Multi-orifice electronic vertical central layout injectors
Fuel Leakage Sensor ............... Optional double wall high pressure pipe alarm device
Fuel Supply Pipe Diameter, in (mm) ............... 0.375 (9.5)
Fuel Return Pipe Diameter, in (mm) ............... 0.312 (8.0)
Fuel Injection Timing ............... Variable dynamic control via microprocessor electronic map
Fuel Rail Type ............... Forged steel thick wall accumulation rail manifold

Dimensions and Weight

Overall Length, in (mm) ............... 43.5 (1105)
Overall Width, in (mm) ............... 34.0 (865)
Overall Height, in (mm) ............... 37.9 (965)
Dry Weight, lbs (kg) ............... 1274 (578)
Wet Weight, lbs (kg) ............... 1367 (620)

Maintenance Data

Service Information

Oil Pressure at Low Idle, psi (bar) ............... 15.0 (1.0)
Oil Pressure at Rated Speed, psi (bar) ............... 50.0-65.0 (3.4-4.5)
Max Allowed Oil Temperature, F (C) ............... 248 (120.0)
Thermostat Start To Open Temperature, F (deg C) ............... 180 (82.0)
Thermostat Fully Open Temperature, F (deg C) ............... 203 (95.0)
Max Cooling Loop Pressure Cap, psi (kPa) ............... 15.0 (103.0)
Drive Belt Tension Deflection, in (mm) ............... 0.25 (6.4)

Engine Oil and Coolant

Engine Oil Type .................. SAE 10W-30, 15W-40
API Service Classifications ......................... CH-4 or higher
Engine Crankcase Oil Capacity, qt (L) ............... 15.5 (14.7)
Total Cooling System Fluid Vol, qt (L) ............... 18.0 (17.0)

Service Intervals

Change engine oil ............... Every 500 hours
Replace oil filter ............... Every 500 hours
Replace fuel filter ............... Every 500 hours
Inspect air filter ............... Every 250 hours
Replace air filter ............... Every 1000 hours
Change coolant ............... Every 3000 hours
Valve-lash adjustment ............... Every 2000 hours
Check fuel system ............... Every 1500 hours
Compression test ............... Every 1500 hours
Belt inspection ............... Every 100 hours

Service Specifications

Cylinder Bore Inside Diameter, in (mm) ............... 4.2125-4.2141 (106.998-107.038)
Cylinder Bore Maximum Out of Roundness, in (mm) ............... 0.0010 (0.025)
Cylinder Bore Maximum Taper, in (mm) ............... 0.0020 (0.050)
Connecting Rod Small End Bushing I.D, in (mm) ............... 1.6152-1.6161 (41.026-41.049)
Connecting Rod Big End Journal Diameter, in (mm) ............... 2.7480-2.7492 (69.800-69.830)
Connecting Rod Bearing Clearance, in (mm) ............... 0.0014-0.0035 (0.036-0.088)
Connecting Rod Side Clearance, in (mm) ............... 0.0047-0.0130 (0.120-0.330)
Crankshaft Main Journal Diameter, in (mm) ............... 3.1236-3.1248 (79.340-79.370)
Crankshaft Main Bearing Clearance, in (mm) ............... 0.0016-0.0039 (0.041-0.100)
Crankshaft Thrust End Play, in (mm) ............... 0.0031-0.0114 (0.080-0.290)
Crankshaft Out of Round Maximum, in (mm) ............... 0.0002 (0.005)
Piston Skirt Outside Diameter, in (mm) ............... 4.2082-4.2098 (106.888-106.928)
Piston to Cylinder Bore Clearance, in (mm) ............... 0.0035-0.0051 (0.090-0.130)
Piston Pin Bore Inside Diameter, in (mm) ............... 1.6144-1.6150 (41.006-41.021)
Piston Pin Outside Diameter, in (mm) ............... 1.6138-1.6142 (40.990-41.000)
Top Ring Groove Clearance, in (mm) ............... 0.0031-0.0047 (0.080-0.120)
Second Ring Groove Clearance, in (mm) ............... 0.0024-0.0039 (0.060-0.100)
Oil Ring Groove Clearance, in (mm) ............... 0.0016-0.0031 (0.040-0.080)
Top Ring End Gap, in (mm) ............... 0.0118-0.0197 (0.300-0.500)
Second Ring End Gap, in (mm) ............... 0.0157-0.0256 (0.400-0.650)
Oil Ring End Gap, in (mm) ............... 0.0118-0.0216 (0.300-0.550)
Cylinder Head Flatness Distortion, in (mm) ............... 0.0020 (0.050)
Valve Guide Inside Diameter, in (mm) ............... 0.3157-0.3169 (8.020-8.050)
Intake Valve Stem Outside Diameter, in (mm) ............... 0.3134-0.3142 (7.960-7.980)
Exhaust Valve Stem Outside Diameter, in (mm) ............... 0.3126-0.3134 (7.940-7.960)
Intake Valve Stem to Guide Clearance, in (mm) ............... 0.0016-0.0035 (0.040-0.090)
Exhaust Valve Stem to Guide Clearance, in (mm) ............... 0.0024-0.0043 (0.060-0.110)
Intake Valve Head Recess, in (mm) ............... 0.0240-0.0433 (0.610-1.100)
Exhaust Valve Head Recess, in (mm) ............... 0.0240-0.0433 (0.610-1.100)
Valve Seat Angle, degrees ............... 45.0
Valve Face Angle, degrees ............... 44.5
Valve Spring Free Length, in (mm) ............... 2.1260 (54.000)
Rocker Arm Shaft Outside Diameter, in (mm) ............... 0.9984-0.9992 (25.360-25.380)
Rocker Arm Bushing Inside Diameter, in (mm) ............... 1.0004-1.0016 (25.410-25.440)
Idler Gear Bushing Inside Diameter, in (mm) ............... 1.5008-1.5020 (38.120-38.150)
Idler Gear Shaft Outside Diameter, in (mm) ............... 1.4988-1.4996 (38.070-38.090)
Camshaft Journal Outside Diameter, in (mm) ............... 2.2031-2.2043 (55.960-55.990)
Camshaft Bearing Bore Inside Diameter, in (mm) ............... 2.2063-2.2079 (56.040-56.080)
Camshaft Bearing Clearance, in (mm) ............... 0.0020-0.0047 (0.050-0.120)
Camshaft End Play, in (mm) ............... 0.0024-0.0102 (0.060-0.260)
Cam Lobe Lift (Intake), in (mm) ............... 0.2854 (7.250)
Cam Lobe Lift (Exhaust), in (mm) ............... 0.2913 (7.400)

Tightening Torques

Cylinder Head Bolts (Step One), lb-ft (Nm) ............... 44 (60.0)
Cylinder Head Bolts (Step Two), lb-ft (Nm) ............... 81 (110.0)
Main Bearing Cap Bolts (Step One), lb-ft (Nm) ............... 59 (80.0)
Main Bearing Cap Bolts (Step Two), lb-ft (Nm) ............... 103 (140.0)
Connecting Rod Cap Bolts (Step One), lb-ft (Nm) ............... 37 (50.0)
Connecting Rod Cap Bolts (Step Two), lb-ft (Nm) ............... 74 (100.0)
Flywheel Housing Fasteners, lb-ft (Nm) ............... 81 (110.0)
Flywheel Mounting Screws, lb-ft (Nm) ............... 96 (130.0)
Crankshaft Damper Pulley Bolt, lb-ft (Nm) ............... 148 (200.0)
Camshaft Thrust Plate Bolts, lb-ft (Nm) ............... 26 (35.0)
Camshaft Timing Gear Drive Bolt, lb-ft (Nm) ............... 111 (150.0)
Rocker Arm Shaft Support Fasteners, lb-ft (Nm) ............... 44 (60.0)
Valve Cover Retaining Acorn Nuts, lb-ft (Nm) ............... 11 (15.0)
Timing Gear Cover Screws, lb-ft (Nm) ............... 26 (35.0)
Oil Pan Sump Bottom Drain Plug, lb-ft (Nm) ............... 37 (50.0)
Oil Pan Mounting Flange Screws, lb-ft (Nm) ............... 26 (35.0)
Oil Pump Pick Up Tube Bracket Bolt, lb-ft (Nm) ............... 26 (35.0)
Oil Pump Assembly Retention Screws, lb-ft (Nm) ............... 33 (45.0)
High Pressure Fuel Rail Mount Bolts, lb-ft (Nm) ............... 30 (40.0)
Fuel Injector Hold Down Clamp Bolt, lb-ft (Nm) ............... 28 (38.0)
Fuel Injection Line Fitting Nuts, lb-ft (Nm) ............... 30 (40.0)
Fuel Transfer Pump Chassis Mounting Bolts, lb-ft (Nm) ............... 18 (24.0)
Water Pump Internal Housing Fasteners, lb-ft (Nm) ............... 26 (35.0)
Thermostat Outer Housing Cover Bolts, lb-ft (Nm) ............... 26 (35.0)
Exhaust Manifold Mounting Nuts, lb-ft (Nm) ............... 37 (50.0)
Turbocharger Turbine Flange Stud Nuts, lb-ft (Nm) ............... 33 (45.0)
Alternator Structural Carrier Pivot Bolt, lb-ft (Nm) ............... 37 (50.0)
Electric Starter Motor Flange Nuts, lb-ft (Nm) ............... 59 (80.0)
Intake Manifold Duct Fasteners, lb-ft (Nm) ............... 26 (35.0)
Crankcase Breather Valve Unit Screws, lb-ft (Nm) ............... 9 (12.0)
Oil Cooler Module Body Carrier Bolts, lb-ft (Nm) ............... 33 (45.0)
Oil Pressure Sensor Sending Unit Plug, lb-ft (Nm) ............... 11 (15.0)
Coolant Temperature Sensor Transducer, lb-ft (Nm) ............... 15 (20.0)
Engine Control Unit Heat Sink Bolts, lb-ft (Nm) ............... 18 (24.0)
Flywheel Housing Inspection Window Cover, lb-ft (Nm) ............... 7 (10.0)
Front Engine Mount Anchor Bracket, lb-ft (Nm) ............... 111 (150.0)
Rear Isolation Mount Adaptor Hardware, lb-ft (Nm) ............... 111 (150.0)
Air Intake Air Heater Connection Post, lb-ft (Nm) ............... 11 (15.0)
Fuel Filter Bracket Housing Stud Nuts, lb-ft (Nm) ............... 26 (35.0)
Turbocharger Oil Feed Supply Pipe Nut, lb-ft (Nm) ............... 22 (30.0)
Turbocharger Oil Return Flange Screws, lb-ft (Nm) ............... 18 (24.0)
Raw Water Pump Drive Adaptor Coupling, lb-ft (Nm) ............... 44 (60.0)
Keel Cooling Loop Flange Interface, lb-ft (Nm) ............... 37 (50.0)
Sea Strainer Bracket Fasteners, lb-ft (Nm) ............... 26 (35.0)
Exhaust Elbow Wet Mix Injection Adapter, lb-ft (Nm) ............... 33 (45.0)
Crankshaft Timing Gear Heat Fit Lockbolt, lb-ft (Nm) ............... 111 (150.0)
Internal Balancer Shaft Support Frame, lb-ft (Nm) ............... 44 (60.0)
Auxiliary Power Take Off Drive Pulley, lb-ft (Nm) ............... 96 (130.0)
Instrument Panel Ground Terminal Stud, lb-ft (Nm) ............... 7 (10.0)

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• John Deere Engines Specs
  
• John Deere 4045D Specs
  
• John Deere 4045DF150 Specs
  
• John Deere 4045DF150B Specs
  

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