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Yanmar 3TNV88F Specifications

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• Yanmar 3TNV88F Engine Specifications
• Yanmar 3TNV88F Engine Troubleshooting

Engine Model .................. Yanmar 3TNV88F
Engine Type .................. 4-cycle vertical three-cylinder liquid-cooled diesel
Number of Cylinders .................. 3
Displacement, cu.in (L) .................. 100.1 (1.642)
Cylinder Bore, in (mm) .................. 3.47 (88.0)
Piston Stroke, in (mm) .................. 3.55 (90.0)
Rated Power, hp (kW) .................. 24.5 (18.2)
Rated Speed, rpm .................. 2400
Idling Speed, rpm .................. 1600
Aspiration Type .................. Naturally aspirated
Compression Ratio .................. 19:1
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
Emission Level .................. Tier 4
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 .................. Electronic
Fuel Type .................. Diesel Fuel

Overall Lenght, in (mm) .................. 23.3 (590)
Overall Width, in (mm) .................. 22.7 (575)
Overall Height, in (mm) .................. 25.0 (635)
Net Weight, lbs (kg) .................. 335 (152)

Cylinder Bore Inside Diameter (Std), mm (in) .................. 88.00-88.03 (3.471-3.473)
Cylinder Bore Inside Diameter (Wear Limit), mm (in) .................. 88.20 (3.479)
Crankshaft End Play, mm (in) .................. 0.13-0.23 (0.0051-0.0091)
Connecting Rod Journal Outside Diameter, mm (in) .............. 47.952-47.962 (1.8879-1.8883)
Connecting Rod Bearing Inside Diameter, mm (in) ................ 48.000-48.026 (1.8898-1.8909)
Main Bearing Journal Outside Diameter, mm (in) .................. 49.952-49.962 (1.9666-1.9670)
Main Bearing Inside Diameter, mm (in) .................. 50.000-50.020 (1.9685-1.9693)
Crankshaft Journal Bend, mm (in) .................. 0.020 (0.0008)
Piston Outside Diameter (Std), mm (in) .................. 87.940-87.970 (3.4622-3.4634)
Piston Outside Diameter (Wear Limit), mm (in) .................. 87.90 (3.4604)
Piston Pin Outside Diameter, mm (in) .................. 25.995-26.000 (1.0234-1.0236)
Piston Pin Hole Diameter, mm (in) .................. 26.000-26.009 (1.0236-1.0240)
Piston to Piston Pin Clearance, mm (in) .................. 0.014 (0.0006)
Top Ring Width, mm (in) .................. 1.97-1.99 (0.0777-0.0785)
Top Ring Side Clearance, mm (in) .................. 0.070-0.105 (0.0028-0.0041)
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) .................. 0.035-0.070 (0.0014-0.0028)
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) .................. 0.2-0.4 (0.0079-0.0158)

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 Stem Bend, mm (in) .................. 0.035-0.070 (0.0014-0.0028)
Exhaust Valve Stem Bend, mm (in) .................. 0.045-0.075 (0.0018-0.0030)
Intake Valve Stem Outside Diameter, mm (in) .................. 7.955-7.975 (0.3132-0.3140)
Exhaust Valve Stem Outside Diameter, mm (in) .................. 7.955-7.960 (0.3132-0.3134)
Intake Valve Guide Inside Diameter, mm (in) .................. 8.010-8.025 (0.3154-0.3159)
Exhaust Valve Guide Inside Diameter, mm (in) .................. 8.015-8.030 (0.3156-0.3161)
Intake Valve Spring Free Length, mm (in) .................. 42.0 (1.657)
Exhaust Valve Spring Free Length, mm (in) .................. 42.0 (1.657)
Intake Cam Lobe Height, mm (in) .................. 38.6-38.8 (1.52-1.53)
Exhaust Cam Lobe Height, mm (in) .................. 38.6-38.8 (1.52-1.53)
Camshaft End Play, mm (in) .................. 0.05-0.20 (0.002-0.0079)
Camshaft Outside Diameter (Gear), mm (in) .................. 44.925-44.950 (1.7687-1.7697)
Camshaft Outside Diameter (Center), mm (in) .................. 44.910-44.935 (1.7681-1.7691)
Camshaft Outside Diameter (Flywheel), mm (in) .................. 44.925-44.950 (1.7687-1.7697)

Engine Oil Type (Summer) .................. SAE 10W-30, 15W-40
Engine Oil Type (Winter) ......................... SAE 5W-30
API Service Classifications ......................... CF, CF-4, or CI-4
Engine Oil Capacity, qts (L) .................. 7.0 (6.7)
Coolant Capacity (Engine), qts (L) .................. 2.1 (2.0)
Compression Pressure, psi (MPa) .................. 500 (3.43)
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)
Lubrication Oil Pressure, psi (MPa) .................. 42-52 (0.29-0.36)
Fuel injection Pressure, psi (MPa) .................. 2840-2990 (19.6-20.6)

Cylinder Head Bolt, Nm (ft-lb) .................. 85-91 (63-67)
Connecting Rod Bolt, Nm (ft-lb) .................. 44-49 (32-36)
Flywheel Bolt, Nm (ft-lb) .................. 83-88 (61-65)
Main Bearing Cap Bolt, Nm (ft-lb) .................. 93-98 (69-72)
Crankshaft Pulley Bolt, Nm (ft-lb) .................. 113-122 (83-90)
Glow Plug, Nm (ft-lb) .................. 14.5-19.5 (11-15)
Fuel Injector Bolt, Nm (ft-lb) .................. 39 (29)
Fuel Pump Drive Gear Nut, Nm (ft-lb) .................. 78-88 (58-65)
Fuel Injection Pump Mounting Nut, Nm (ft-lb) .................. 23-28 (17-21)
Fuel Injector Nozzle Case Nut, Nm (ft-lb) .................. 39-44 (30-33)
High Pressure Fuel Injection Line Nut, Nm (ft-lb) ........ 29-34 (22-25)

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Gasoline and Diesel Engines Technical Data