Yanmar 3TNM72-ASA3 User Manual

Features
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Clean Emissions
Building off the Yanmar reputation for clean, quiet, fuel
efficient and reliable compact diesel engines MINIMAX
has achieved compliance with 2008 EPA Tier 4 and EU
stage III A exhaust emissions regulations.
Reliable, Durable, and Quiet
MINIMAX offers enhanced noise and vibration
characteristics due to its Ladder Frame block design, a
stiffer crank and pistons and finer tolerance in the
journal. Gear noise reduction is achieved through an
improved gear tooth profile resulting in less mechanical
noise.
Fuel Delivery and Economy
A newly designed, in-line type fuel injection pump is
utilized to assure more precise fuel delivery, and control.
The result is reduced emissions, improved performance
over a wide range of applications and good fuel
economy which assures that Yanmar’s reputation for
superior starting characteristics continues.
Ultra-Compact and High Performance
MINIMAX offers best-in-class power density as
measured by the ratio of the engine’s output relative to
the engine’s overall external dimensions
Easy Installation
With 176 mm wide base, MINIMAX engines is an easy
replacement for most major applications in this
displacement category.
Additional Information
Yanmar America Corp Distributed By:
951 Corporate Grove Drive
Buffalo Grove, IL 60089
Website www.yanmar.com
Standard Engine Equipment
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General
Intake manifold & exhaust manifold
Muffler/Exhaust Pipe gasket (shipped loose)
Lubrication System
2.9 L Capacity Shallow Oil Pan, Side Drain
Trochoid Oil Pump
Paper Element Oil Filter
Oil Pressure Switch
Crankcase Breather, Closed Type
Electrical System
12V, 40 Amp Alternator
12V Starter Motor
12V Super Quick Glow Plugs
Stop Solenoid Timer (shipped loose)
Fuel System
In-line MC Fuel Injection Pump
Mechanical Fuel Pump
Paper Element Fuel Filter
Water Separator (shipped loose)
Stop Solenoid, Integral to Fuel Injection Pump
Cooling System
Water Pump, Belt Driven
5-Blade, 300mm Cooling Fan—Puller Type
71°C (160°F) Thermostat
Temperature Switch
Fan Belt
Power Take Off
Flywheel
Backplate
3TNM72-ASA3 General Specification
22.8 HP (17.0 kW) @ 3600 rated rpm*
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Type• • • 3 Cylinder, 4-Cycle, Liquid Cooled Diesel Engine
Bore • • • • • • • • • • • • • • • • • • • • • • 72 mm
Stroke • • • • • • • • • • • • • • • • • • • • • 74 mm
Displacement • • • • • • • • • • • • • • • • • .904 L
Aspiration • • • • • • • • • • • • • Naturally Aspirated
Combustion System • • • • • • • • • Indirect Injection
Rotation (from flywheel end) • • • • • • Couterclockwise
Dry Weight • • • • • • • • • • • • •161 lbs. (73 kg)
MINIMAX IDI Series
Industrial Diesel Engine
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Image shown may not be actual engine

Yanmar 3TNM72-ASA3 Specifications

General

Engine Model	3TNM72-ASA3
Number of Cylinders	3
Displacement	0.854 L
Bore x Stroke	72 mm x 70 mm
Rated Speed	3600 rpm
Compression Ratio	23.5:1
Fuel System	Indirect injection
Fuel	Diesel
Lubrication System	Forced lubrication by trochoid pump
Starting System	Electric starter
Engine Type	Vertical, water-cooled, 4-cycle diesel engine
Rated Output	14.7 kW (19.7 hp)
Cooling System	Water-cooled

Summary

General Specifications

Engine Type and Configuration

Details engine type, cylinder count, cycle, cooling, bore, stroke, displacement, aspiration, combustion, rotation, and dry weight.

Features

Emissions Compliance

Highlights compliance with 2008 EPA Tier 4 and EU Stage III A exhaust emissions regulations.

Reliability and Quiet Operation

Focuses on enhanced noise and vibration characteristics due to design features.

Fuel Delivery and Economy

Explains the in-line fuel injection pump for precise delivery, reduced emissions, and good fuel economy.

Compactness and Power Density

Emphasizes best-in-class power density relative to external dimensions.

Easy Installation

Describes the engine's 176 mm wide base for easy replacement in applications.

Standard Engine Equipment

General Equipment

Lists standard general components such as intake manifold and exhaust manifold.

Lubrication System

Details oil pan capacity, oil pump type, and paper element oil filter.

Electrical System

Outlines alternator, starter motor, glow plugs, and stop solenoid timer.

Fuel System Components

Covers fuel injection pump, mechanical fuel pump, fuel filter, and water separator.

Cooling System Details

Lists water pump, fan type, thermostat temperature, and fan belt.

Power Take Off

Mentions flywheel and backplate as components for power take off.

Performance Data

Torque and Output Curves

Displays engine torque and output (HP/kW) versus engine speed (rpm).

Fuel Consumption Rate

Shows BSFC (Brake Specific Fuel Consumption) data in g/kWh and g/PSh.

Dimensions

Engine Physical Dimensions

Provides length, width, and height measurements in inches and millimeters.

Ratings Definitions and Conditions

Net Rated Power Explanation

Explains net engine output and considerations for operating environment and driven machine.

Application Standards

Details inlet air standard conditions for performance ratings (pressure, humidity, temperature).