• INDUSTRIAL ENGINES
• SMALL ENGINES
• OUTBOARD ENGINES
• CAR ENGINES

• All Manufacturers

  • Honda
  • Kawasaki
  • Kohler
  • Kubota
  • Mercury
  • Yamaha
  • BMW
  • Toyota
  • Mitsubishi
  • Nissan
  • Yanmar
  • Cummins
  • Deutz
  • Caterpillar
  • Isuzu
  • Perkins
  • Mazda
  • Opel
  • Saab
  • Subaru
  • Suzuki
  • Volkswagen
  • Audi
  • Volvo
  • Renault
  • Chevrolet
  • Volvo Penta
  • John Deere
  • International
  • Ford
  • Hyundai
  • Chrysler
  • Mercedes Benz
  • Evinrude
  • Johnson
  • Tohatsu
  • Detroit Diesel
  • Tecumseh
  • Briggs Stratton

Yanmar 3TNE84 Specifications

____________________________________________________________________________________

• Yanmar 3TNE84 Engine Specifications
• Yanmar 3TNE84 Engine Troubleshooting

Engine Model .................. Yanmar 3TNE84
Engine Type .................. 4-cycle vertical three-cylinder liquid-cooled diesel
Number of Cylinders .................. 3
Displacement, cu.in (L) .................. 91.3 (1.496)
Cylinder Bore, in (mm) .................. 3.31 (84.0)
Piston Stroke, in (mm) .................. 3.55 (90.0)
Engine Power, hp (kW) .................. 38.0 (28.3)
Engine Speed, rpm .................. 3600
Idling Speed, rpm .................. 2800
Aspiration Type .................. Naturally aspirated
Compression Ratio .................. 18:1
Firing Order .................. 1-3-2
Lubrication System .................. Forced lubrication with trochoid pump
Oil Filter Type .................. Full flow, replaceable
Air Cleaner Type .................. Dual element
Cooling System .................. Liquid-cooled with radiator
Starting System .................. Electric Starter
Electrical System Rating, Volts .................. 12
Charging System .................. Alternator

Fuel System .................. Direct injection
Fuel Pump Type .................. Mechanical
Fuel Filter Type .................. Replaceable element
Governor Type .................. Mechanical, centrifugal
Fuel Type .................. Diesel Fuel

Overall Lenght, in (mm) .................. 21.9 (555)
Overall Width, in (mm) .................. 19.1 (485)
Overall Height, in (mm) .................. 24.6 (625)
Net Weight, lbs (kg) .................. 328 (149)

Cylinder Bore Inside Diameter (Std), mm (in) .................. 84.00-84.03 (3.314-3.315)
Cylinder Bore Inside Diameter (Wear Limit), mm (in) .................. 84.20 (3.322)
Crankshaft Journal Outside Diameter, mm (in) .................. 53.952-53.962 (2.1283-2.1287)
Crank Journal to Bushing Oil Clearance, mm (in) .................. 0.038-0.068 (0.0015-0.0027)
Crankshaft Journal Bend, mm (in) .................. 0.020 (0.0008)
Crankpin Bushing Inside Diameter, mm (in) .................. 51.000-51.010 (2.0118-2.0122)
Crankpin Outside Diameter, mm (in) .................. 47.952-47.962 (1.8916-1.8920)
Piston Outside Diameter (Std), mm (in) .................. 83.945-83.975 (3.3114-3.3126)
Piston Outside Diameter (Wear Limit), mm (in) .................. 83.90 (3.3097)
Piston to Cylinder Clearance, mm (in) .................. 0.04-0.07 (0.0016-0.0028)
Piston Pin Outside Diameter, mm (in) .................. 25.987-26.00 (1.0251-1.0256)
Piston Pin Hole Diameter, mm (in) .................. 26.00-26.009 (1.0256-1.0260)
Piston to Piston Pin Clearance, mm (in) .................. 0.022 (0.0009)
Top Ring Width, mm (in) .................. 1.97-1.99 (0.0777-0.0785)
Top Ring Side Clearance, mm (in) .................. 0.075-0.110 (0.0030-0.0043)
Top Ring End Gap, mm (in) .................. 0.2-0.4 (0.0079-0.0158)
Second Ring Width, mm (in) .................. 1.97-1.99 (0.0777-0.0785)
Second Ring Side Clearance, mm (in) .................. 0.045-0.080 (0.0018-0.0032)
Second Ring End Gap, mm (in) .................. 0.2-0.4 (0.0079-0.0158)
Oil Ring Width, mm (in) .................. 3.97-3.99 (0.1566-0.1574)
Oil Ring Side Clearance, mm (in) .................. 0.025-0.060 (0.0010-0.0024)
Oil Ring End Gap, mm (in) .................. 0.20-0.45 (0.0079-0.0178)

Cylinder Head Combustion Surface Distortion, mm (in) .................. 0.05 (0.0020)
Intake Valve Clearance, mm (in) .................. 0.15-0.25 (0.006-0.010)
Exhaust Valve Clearance, mm (in) .................. 0.15-0.25 (0.006-0.010)
Intake Valve Seat Angle, Degrees .................. 120
Exhaust Valve Seat Angle, Degrees .................. 90
Intake Valve Seat Width, mm (in) .................. 1.07-1.24 (0.0422-0.0489)
Exhaust Valve Seat Width, mm (in) .................. 1.24-1.45 (0.0489-0.0572)
Intake Valve Stem Outside Diameter, mm (in) .................. 7.955-8.025 (0.3138-0.3166)
Exhaust Valve Stem Outside Diameter, mm (in) .................. 7.955-8.030 (0.3138-0.3168)
Intake Valve Guide Inside Diameter, mm (in) .................. 7.975-8.010 (0.3146-0.3160)
Exhaust Valve Guide Inside Diameter, mm (in) .................. 7.970-8.015 (0.3144-0.3162)
Intake Valve Stem to Guide Clearance, mm (in) .................. 0.035-0.070 (0.0014-0.0028)
Exhaust Valve Stem to Guide Clearance, mm (in) .................. 0.045-0.075 (0.0018-0.0030)
Intake Valve Head Thickness, mm (in) .................. 1.244-1.444 (0.0491-0.0570)
Exhaust Valve Head Thickness, mm (in) .................. 1.35-1.55 (0.0533-0.0611)
Intake Valve Spring Free Length, mm (in) .................. 42.0 (1.657)
Exhaust Valve Spring Free Length, mm (in) .................. 42.0 (1.657)
Camshaft Journal Outside Diameter (Gear), mm (in) .................. 44.925-44.950 (1.7722-1.7732)
Camshaft Journal Clearance (Gear), mm (in) .................. 0.040-0.130 (0.0016-0.0051)
Camshaft Journal Outside Diameter (Center), mm (in) .................. 44.910-44.935 (1.7716-1.7726)
Camshaft Journal Clearance (Center), mm (in) .................. 0.065-0.115 (0.0026-0.0045)
Camshaft Journal Outside Diameter (Flywheel), mm (in) ............... 44.925-44.950 (1.7722-1.7732)
Camshaft Journal Clearance (Flywheel), mm (in) .................. 0.05-0.10 (0.002-0.004)

Engine Oil Type (Summer) .................. SAE 10W-30
Engine Oil Type (Winter) ......................... SAE 5W-20
API Service Classifications ......................... CC or higher
Engine Oil Capacity, qts (L) .................. 7.2 (6.9)
Compression Pressure, psi (MPa) .................. 470 (3.24)
Intake Valve Clearance, mm (in) .................. 0.15-0.25 (0.006-0.010)
Exhaust Valve Clearance, mm (in) .................. 0.15-0.25 (0.006-0.010)
Fuel Injection Timing (FlD, BTDC), deg .................. 24±1
Fuel injection Pressure, psi (MPa) .................. 2840 (19.6)
Coolant Capacity (Engine), qts (L) .................. 2.2 (2.1)

Cylinder Head Bolt, Nm (ft-lb) .................. 85-91 (63-67)
Connecting Rod Bolt, Nm (ft-lb) .................. 44-54 (32-40)
Flywheel Bolt, Nm (ft-lb) .................. 83-88 (61-65)
Metal Cap Bolt, Nm (ft-lb) .................. 96-100 (71-74)
Crankshaft V-Pulley Bolt, Nm (ft-lb) .................. 113-122 (83-90)
Fuel Injection Nozzle Nut, Nm (ft-lb) .................. 7-9 (5-6.5)
Timing Clamping Nut, Nm (ft-lb) .................. 59-69 (43-51)
Governor Support Nut, Nm (ft-lb) .................. 44-49 (32-36)
High Pressure Pipe Sleeve Nut, Nm (ft-lb) ........ 29-34 (22-25)

____________________________________________________________________________________

Gasoline and Diesel Engines Technical Data