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Yanmar 3T84HLE Engine

General Technical Data

Engine Specifications

Engine Model ............... Yanmar 3T84HLE
Engine Type ............... Vertical inline 4-stroke liquid-cooled diesel
Number of Cylinders ............... 3
Cylinder Arrangement ............... In-line vertical configuration
Engine Bore, in (mm) ............... 3.31 (84.0)
Engine Stroke, in (mm) ............... 3.39 (86.0)
Displacement, cu.in (L) ............... 87.2 (1.429)
Rated Engine Power, hp (kW) ............... 30.0 (22.4)
Rated Engine Speed, rpm ............... 2600-3000
Peak Torque ............... 85.0 Nm (62.6 lb-ft) at 1800 rpm
Idle Speed, rpm ............... 700-800
Aspiration Type ............... Naturally Aspirated
Operating Speed, rpm ............... 2800
Compression Ratio ............... 18.0:1
Firing Order ............... 1-3-2
Combustion Chamber Type ............... Direct injection swirl design
Rotation Direction ............... Counterclockwise viewed from flywheel side
Crankcase Ventilation ............... Closed breather circuit flow system
Valvetrain Layout ............... Overhead valve actuated via pushrods and lifters
Camshaft Drive ............... Helical gear train link from crankshaft assembly
Main Bearing Type ............... Tri-metal insert shells thin wall profile
Cylinder Liner Structure ............... Parent-bore integral block bore architecture
Crankshaft Material ............... Forged steel alloy with induction hardened journals
Camshaft Material ............... Chilled cast iron alloy with ground lobe surfaces
Cylinder Block Type ............... High-strength cast iron alloy mono-block
Cylinder Head Type ............... Single-piece cast iron overhead valve design
Lubrication System ............... Forced pressure circulation by trochoid pump
Oil Pump Type ............... Gear-driven trochoid assembly
Oil Filter Type ............... Full-flow spin-on cartridge elements
Cooling System ............... Forced liquid circulation with radiator radiator flow
Water Pump Type ............... Belt-driven centrifugal impeller mechanical design
Air Cleaner Type ............... Dry heavy-duty dual element type
PTO Drive System ............... Gear train auxiliary takeoff interface port
Exhaust Gas Compliance ............... Interim Tier 4 equivalent limits
Starting System ............... Electric starting motor assembly
Electrical System ............... 12V DC system architecture
Alternator Capacity ............... 40A built-in regulator configuration

Fuel System

Fuel Injection Pump Type ............... In-line jerk type mechanical distributor unit
Injection Pump Manufacturer ............... Yanmar proprietary mechanical design
Fuel Feed Pump Type ............... Mechanical diaphragm actuation layout
Fuel Injection Timing ............... 14.0 degrees BTDC
Fuel Injection Pressure, psi (bar) ............... 2842.0 (196.0)
Fuel Injection Nozzle Type ............... Multi-hole mini nozzle configuration
Number of Nozzle Hole ............... 4 orifice openings per assembly tip
Nozzle Hole Diameter, in (mm) ............... 0.0098 (0.25)
Fuel Filter Type ............... Spin-on cartridge featuring integral water separator
Fuel Tank Return Line Flow ............... Continuous bypass return flow channel
Governor Type ............... All-speed centrifugal mechanical weight assembly
Governor Regulation Rate ............... 8.0 to 12.0 percent standard curve
Minimum Fuel Delivery Line Inner Diameter, in (mm) ............... 0.196 (5.0)
Maximum Fuel Pump Inlet Vacuum, inHg (mmHg) ............... 2.95 (75.0)
Fuel Return Line Maximum Backpressure, psi (bar) ............... 2.9 (0.2)
Injection Nozzle Opening Pressure Range, psi (bar) ............... 2842.0-2987.0 (196.0-206.0)
Fuel Transfer Pump Delivery Pressure, psi (bar) ............... 2.9-4.3 (0.2-0.3)
Injection Pipe Outer Diameter, in (mm) ............... 0.236 (6.0)
Injection Pipe Inner Diameter, in (mm) ............... 0.078 (2.0)
Fuel Cut-Off Device ............... 12V DC electric solenoid shutdown valve
Cold Start Aid ............... 12V intake air glow plug preheater circuit
Glow Plug Current Draw, A ............... 10.0 per plug heating element
Fuel System Bleeding Method ............... Manual priming lever with air bleed screws
Maximum Allowable Fuel Temperature, F (C) ............... 122.0 (50.0)
Fuel Grade Recommendation ............... Ultra-low sulfur diesel number 2-D standard

Dimensions and Weight

Overall Length, in (mm) ............... 22.2 (565)
Overall Width, in (mm) ............... 19.1 (485)
Overall Height, in (mm) ............... 24.2 (615)
Dry Weight, lbs (kg) ............... 326 (148)

Maintenance Data

Service Information

Cylinder Compression Pressure, psi (bar) ............... 398.0-426.0 (27.4-29.4)
Minimum Compression Pressure, psi (bar) ............... 341.0 (23.5)
Oil Pressure at Rated Speed, psi (bar) ............... 42.6-56.8 (2.9-3.9)
Oil Pressure at Idle Speed, psi (bar) ............... 8.5 (0.5)
Thermostat Opening Valve Temperature, F (C) ............... 160.0 (71.0)
Thermostat Full Lift Open Temperature, F (C) ............... 185.0 (85.0)
Radiator Cap Pressure Rating, psi (bar) ............... 12.8 (0.88)
Intake Valve Clearance, in (mm) ............... 0.0059-0.0078 (0.150-0.200)
Exhaust Valve Clearance, in (mm) ............... 0.0059-0.0078 (0.150-0.200)

Engine Oil and Coolant

Engine Oil Type .................. SAE 10W-30, SAE 15W-40
API Service Classifications ......................... CD, CE, CF-4
Engine Oil Capacity with Filter, qt (L) ............... 5.81 (5.5)
Engine Oil Capacity (Pan Only), qt (L) ............... 5.28 (5.0)
Cooling System Capacity, qt (L) ............... 4.22 (4.0)

Service Intervals

Change engine oil ............... Every 150 hours
Replace oil filter ............... Every 150 hours
Replace fuel filter ............... Every 250 hours
Service air filter ............... Every 100 hours
Replace air filter ............... Every 500 hours
Change coolant ............... Every 1000 hours
Valve-lash adjustment ............... Every 500 hours
Check fuel system ............... Every 1000 hours
Compression test ............... Every 1000 hours
Belt inspection ............... Every 100 hours

Service Specifications

Cylinder Bore Inside Dimension, in (mm) ............... 3.3070-3.3082 (84.000-84.030)
Cylinder Bore Maximum Wear Limit, in (mm) ............... 3.3150 (84.200)
Crankshaft Main Journal Outer Diameter, in (mm) ............... 1.9645-1.9653 (49.900-49.920)
Crankpin Journal Outer Diameter, in (mm) ............... 1.7283-1.7291 (43.900-43.920)
Main Bearing Oil Clearance, in (mm) ............... 0.0015-0.0035 (0.040-0.090)
Connecting Rod End Side Clearance, in (mm) ............... 0.0078-0.0157 (0.200-0.400)
Connecting Rod Bearing Clearance, in (mm) ............... 0.0015-0.0031 (0.040-0.080)
Crankshaft Thrust End Play, in (mm) ............... 0.0043-0.0090 (0.110-0.230)
Piston Skirt Outer Diameter, in (mm) ............... 3.3039-3.3051 (83.920-83.950)
Piston Pin Bore Inner Diameter, in (mm) ............... 1.0236-1.0240 (26.000-26.010)
Piston Pin Outer Diameter, in (mm) ............... 1.0232-1.0236 (25.990-26.000)
Piston Pin to Piston Pin Bore Clearance, in (mm) ............... 0.0003-0.0007 (0.007-0.019)
Top Ring Groove Width, in (mm) ............... 0.0787-0.0795 (2.000-2.020)
Second Ring Groove Width, in (mm) ............... 0.0787-0.0795 (2.000-2.020)
Oil Ring Groove Width, in (mm) ............... 0.1574-0.1582 (4.000-4.020)
Top Ring Side Clearance, in (mm) ............... 0.0027-0.0043 (0.070-0.110)
Second Ring Side Clearance, in (mm) ............... 0.0015-0.0031 (0.040-0.080)
Oil Ring Side Clearance, in (mm) ............... 0.0011-0.0027 (0.030-0.070)
Top Ring End Gap, in (mm) ............... 0.0078-0.0157 (0.200-0.400)
Second Ring End Gap, in (mm) ............... 0.0078-0.0157 (0.200-0.400)
Oil Ring End Gap, in (mm) ............... 0.0078-0.0157 (0.200-0.400)
Cylinder Head Lower Deck Surface Flatness, in (mm) ............... 0.0019 (0.050)
Cylinder Block Upper Deck Surface Flatness, in (mm) ............... 0.0019 (0.050)
Intake Valve Stem Outer Diameter, in (mm) ............... 0.2736-0.2742 (6.950-6.965)
Exhaust Valve Stem Outer Diameter, in (mm) ............... 0.2732-0.2738 (6.940-6.955)
Intake Valve Guide Inner Diameter, in (mm) ............... 0.2755-0.2761 (7.000-7.015)
Exhaust Valve Guide Inner Diameter, in (mm) ............... 0.2755-0.2761 (7.000-7.015)
Intake Valve Stem to Guide Clearance, in (mm) ............... 0.0013-0.0025 (0.035-0.065)
Exhaust Valve Stem to Guide Clearance, in (mm) ............... 0.0017-0.0029 (0.045-0.075)
Valve Face Angle ............... 45.0 degrees
Valve Seat Contact Width, in (mm) ............... 0.0433-0.0551 (1.100-1.400)
Valve Head Recess Depth, in (mm) ............... 0.0275-0.0354 (0.700-0.900)
Valve Spring Free Lenght, in (mm) ............... 1.4881 (37.800)
Camshaft Journal Outer Diameter, in (mm) ............... 1.5716-1.5724 (39.920-39.940)
Camshaft Bearing Bore Inner Diameter, in (mm) ............... 1.5748-1.5759 (40.000-40.030)
Camshaft Bearing Clearance, in (mm) ............... 0.0023-0.0043 (0.060-0.110)
Intake Cam Lobe Height, in (mm) ............... 1.3346-1.3385 (33.900-34.000)
Exhaust Cam Lobe Height, in (mm) ............... 1.3346-1.3385 (33.900-34.000)
Camshaft End Play, in (mm) ............... 0.0019-0.0059 (0.050-0.150)
Rocker Arm Shaft Outer Diameter, in (mm) ............... 0.4716-0.4724 (11.980-12.000)
Rocker Arm Bushing Inner Diameter, in (mm) ............... 0.4732-0.4740 (12.020-12.040)
Rocker Arm Shaft to Bushing Clearance, in (mm) ............... 0.0007-0.0023 (0.020-0.060)

Tightening Torques

Cylinder Head Bolt ............... 70.0-80.0 Nm (51.6-59.0 lb-ft)
Main Bearing Cap Bolt ............... 50.0-60.0 Nm (36.8-44.2 lb-ft)
Connecting Rod Cap Bolt ............... 40.0-45.0 Nm (29.5-33.1 lb-ft)
Flywheel Mount Bolt ............... 80.0-85.0 Nm (59.0-62.6 lb-ft)
Camshaft Thrust Flange Bolt ............... 23.0-28.0 Nm (16.9-20.6 lb-ft)
Crankshaft Front Pulley Nut ............... 115.0-125.0 Nm (84.8-92.2 lb-ft)
Timing Gear Housing Cover Bolt ............... 23.0-28.0 Nm (16.9-20.6 lb-ft)
Rocker Arm Shaft Support Bolt ............... 23.0-28.0 Nm (16.9-20.6 lb-ft)
Valve Cover Acorn Nut ............... 8.0-11.0 Nm (5.9-8.1 lb-ft)
Oil Sump Drain Plug Screw ............... 50.0-60.0 Nm (36.8-44.2 lb-ft)
Oil Pan Perimeter Bolt ............... 23.0-28.0 Nm (16.9-20.6 lb-ft)
Fuel Pump Mount Nut ............... 23.0-28.0 Nm (16.9-20.6 lb-ft)
Injection Nozzle Holder Clamping Bolt ............... 25.0-30.0 Nm (18.4-22.1 lb-ft)
Fuel High Pressure Line Nut ............... 29.0-34.0 Nm (21.3-25.0 lb-ft)
Exhaust Manifold Stud Nut ............... 25.0-30.0 Nm (18.4-22.1 lb-ft)
Intake Manifold Flange Bolt ............... 23.0-28.0 Nm (16.9-20.6 lb-ft)
Water Pump Flange Bolt ............... 23.0-28.0 Nm (16.9-20.6 lb-ft)
Thermostat Housing Bolt ............... 23.0-28.0 Nm (16.9-20.6 lb-ft)
Starter Motor Mounting Bolt ............... 45.0-55.0 Nm (33.1-40.5 lb-ft)
Alternator Pivoting Support Bolt ............... 23.0-28.0 Nm (16.9-20.6 lb-ft)
Alternator Tension Lock Adjusting Bolt ............... 9.0-12.0 Nm (6.6-8.8 lb-ft)
Oil Pressure Switch Sensor ............... 12.0-15.0 Nm (8.8-11.0 lb-ft)
Coolant Temperature Sensor ............... 25.0-30.0 Nm (18.4-22.1 lb-ft)
Intake Air Glow Plug ............... 15.0-20.0 Nm (11.0-14.7 lb-ft)
Fuel Filter Bracket Base Bolt ............... 23.0-28.0 Nm (16.9-20.6 lb-ft)
Bell Housing Outer Flange Bolt ............... 45.0-55.0 Nm (33.1-40.5 lb-ft)
Idler Gear Shaft Bracket Bolt ............... 23.0-28.0 Nm (16.9-20.6 lb-ft)
Oil Pump Assembly Plate Screw ............... 7.0-10.0 Nm (5.1-7.3 lb-ft)
Oil Strainer Pick-up Tube Bolt ............... 23.0-28.0 Nm (16.9-20.6 lb-ft)
Breather Valve Cover Plate Screw ............... 7.0-10.0 Nm (5.1-7.3 lb-ft)
Fuel Feed Pump Flange Attachment Nut ............... 8.0-12.0 Nm (5.9-8.8 lb-ft)
Flywheel Housing Backing Bolt ............... 45.0-55.0 Nm (33.1-40.5 lb-ft)

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• Yanmar Engines Specs
  
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