This highly detailed repair manual covers all repairs and servicing. All technical details taken directly from the manufacturer can be found in this manual, It is the factory manual from the manufacturer. Yanmar 3TG66, 3TG72 Gasoline Engines Technical manual is the same manual used by professional technicians, mechanics and workshops around the world.

Yanmar 3TG66, 3TG72 Gasoline Engines Technical manual has easy to read text sections with top quality diagrams and instructions, will guide you through fundamentals of maintaining and repairing, step-by-step, to teach you what the factory trained technicians already know by heart. For that reason, you will not find it difficult to repair or to maintain some of the innovative features loaded on the vehicle when you have the manual. Using this repair manual is the true way to keep your vehicle working properly.

 

Publication No. CTM12 (16MAY90)

 

Models Covers:

Yanmar 3TG66, 3TG72 Gasoline Engines Technical

 

 

Manual Covers:

Group 05— . . . . . . . . . . . . . . . . . . . . . . . . . .
About This Manual . . . . . . . . . . . . . . . . . . . 05-2
Engine Serial Number Plate . . . . . . . . . . . . . 05-3
Engine Application Chart . . . . . . . . . . . . . . . 05-3
Engine Torque Specifications . . . . . . . . . . . . 05-4
Metric Torque Specifications . . . . . . . . . . . . 05-5
Group 06—Repair Specifications
Engine
3TG72 . . . . . . . . . . . . . . . . . . . . . . . . . 06-1
3TG66 . . . . . . . . . . . . . . . . . . . . . . . . . 06-6
Group 10—Valve Train and Camshaft
Service Equipment and Tools . . . . . . . . . . . . 10-1
Other Materials . . . . . . . . . . . . . . . . . . . . . 10-1
Service Part Kits . . . . . . . . . . . . . . . . . . . . 10-2
Rocker Arm
Remove and Disassemble Cover . . . . . . . . 10-2
Measure and Adjust Valve Clearance . . . . . 10-3
Remove and Disassemble Assembly . . . . . 10-4
Remove and Inspect Pushrods and
Cam Followers . . . . . . . . . . . . . . . . . . 10-7
Install Pushrods and Cam Followers . . . . . . 10-9
Assemble and Install Assembly . . . . . . . . 10-10
Assemble and Install Cover . . . . . . . . . . 10-11
Camshaft
Remove . . . . . . . . . . . . . . . . . . . . . . . 10-12
Disassemble and Inspect . . . . . . . . . . . . 10-14
Assemble . . . . . . . . . . . . . . . . . . . . . . 10-18
Install . . . . . . . . . . . . . . . . . . . . . . . . . 10-18
Group 15—Cylinder Head, Valves, and Manifolds
Essential Tools . . . . . . . . . . . . . . . . . . . . . 15-1
Service Equipment and Tools . . . . . . . . . . . . 15-1
Service Part Kits . . . . . . . . . . . . . . . . . . . . 15-1
Exhaust Manifold
Remove, Repair, and Install . . . . . . . . . . . 15-2
Intake Manifold
Remove, Repair, and Install . . . . . . . . . . . 15-3

Cylinder
Remove . . . . . . . . . . . . . . . . . . . . . . . . 15-4
Disassemble . . . . . . . . . . . . . . . . . . . . . 15-5
Assemble . . . . . . . . . . . . . . . . . . . . . . 15-10
Install . . . . . . . . . . . . . . . . . . . . . . . . . 15-13
Group 20—Flywheel
Service Equipment and Tools . . . . . . . . . . . . 20-1
Flywheel Housing and Flywheel
Remove . . . . . . . . . . . . . . . . . . . . . . . . 20-1
Inspect . . . . . . . . . . . . . . . . . . . . . . . . . 20-3
Install . . . . . . . . . . . . . . . . . . . . . . . . . . 20-3
Group 25—Connecting Rods and Pistons
Service Equipment and Tools . . . . . . . . . . . . 25-1
Other Materials . . . . . . . . . . . . . . . . . . . . . 25-1
Service Part Kits . . . . . . . . . . . . . . . . . . . . 25-1
Connecting Rod
Measure Side Play . . . . . . . . . . . . . . . . . 25-2
Measure Bearing Clearance . . . . . . . . . . . 25-2
Pistons and Connecting Rods
Remove . . . . . . . . . . . . . . . . . . . . . . . . 25-4
Inspect . . . . . . . . . . . . . . . . . . . . . . . . . 25-6
Deglaze Cylinder Bores . . . . . . . . . . . . . 25-13
Assemble . . . . . . . . . . . . . . . . . . . . . . 25-14
Install . . . . . . . . . . . . . . . . . . . . . . . . . 25-16
Group 30—Crankshaft and Main Bearings
Service Equipment and Tools . . . . . . . . . . . . 30-1
Service Part Kits . . . . . . . . . . . . . . . . . . . . 30-1
Other Materials . . . . . . . . . . . . . . . . . . . . . 30-1
Measure Crankshaft End Play . . . . . . . . . . . 30-2
Measure Crankshaft Bearing Clearance . . . . . 30-2
Crankshaft Oil Seal
Remove . . . . . . . . . . . . . . . . . . . . . . . . 30-5
Install . . . . . . . . . . . . . . . . . . . . . . . . . . 30-6
Crankshaft
Remove . . . . . . . . . . . . . . . . . . . . . . . . 30-7
Disassemble and Inspect . . . . . . . . . . . . . 30-9

Crankshaft—Continued
Assemble . . . . . . . . . . . . . . . . . . . . . . 30-12
Install . . . . . . . . . . . . . . . . . . . . . . . . . 30-12
Group 35—Gear Housing
Service Equipment and Tools . . . . . . . . . . . . 35-1
Other Materials . . . . . . . . . . . . . . . . . . . . . 35-1
Timing Gear Cover
Remove . . . . . . . . . . . . . . . . . . . . . . . . 35-2
Install . . . . . . . . . . . . . . . . . . . . . . . . . . 35-3
Timing Gears
Remove and Inspect . . . . . . . . . . . . . . . . 35-4
Install Timing Gears . . . . . . . . . . . . . . . . . . 35-5
Gear Housing
Remove . . . . . . . . . . . . . . . . . . . . . . . . 35-6
Install . . . . . . . . . . . . . . . . . . . . . . . . . . 35-7
Group 40—Lubrication System
Service Equipment and Tools . . . . . . . . . . . . 40-1
Other Materials . . . . . . . . . . . . . . . . . . . . . 40-1
Oil Pump
Remove and Inspect . . . . . . . . . . . . . . . . 40-2
Assemble and Install . . . . . . . . . . . . . . . . 40-3
Oil Pressure Regulating Valve
Remove and Install . . . . . . . . . . . . . . . . . 40-4
Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . 40-5
Group 45—Cooling System
Essential Tools . . . . . . . . . . . . . . . . . . . . . 45-1
Service Equipment and Tools . . . . . . . . . . . . 45-1
Thermostat
Service . . . . . . . . . . . . . . . . . . . . . . . . . 45-2
Water Pump
Remove . . . . . . . . . . . . . . . . . . . . . . . . 45-3
Disassemble . . . . . . . . . . . . . . . . . . . . . 45-3
Assemble . . . . . . . . . . . . . . . . . . . . . . . 45-6
Install . . . . . . . . . . . . . . . . . . . . . . . . . . 45-8
Group 50—Carburetor
Carburetor
Remove and Install . . . . . . . . . . . . . . . . . 50-1
Clean . . . . . . . . . . . . . . . . . . . . . . . . . . 50-4
Assemble . . . . . . . . . . . . . . . . . . . . . . . 50-5
Group 55—Governor
Service Equipment and Tools . . . . . . . . . . . . 55-1
Governor
Remove and Inspect . . . . . . . . . . . . . . . . 55-1
Assemble and Install . . . . . . . . . . . . . . . . 55-5

Group 60—Starter
Service Equipment and Tools . . . . . . . . . . . . 60-1
Starter Specifications . . . . . . . . . . . . . . . . . 60-1
Starter Application Chart . . . . . . . . . . . . . . . 60-1
Bench Test Starter . . . . . . . . . . . . . . . . . . . 60-2
Starter Hitachi 0.8 kW
Disassemble and Service . . . . . . . . . . . . . 60-3
Assemble . . . . . . . . . . . . . . . . . . . . . . . 60-7
Nippon Denso 1.0 kW Starter
Disassemble and Service . . . . . . . . . . . . . 60-8
Assemble . . . . . . . . . . . . . . . . . . . . . . 60-15
Group 65—Alternator
Service Equipment and Tools . . . . . . . . . . . . 65-1
Alternator Specifications . . . . . . . . . . . . . . . 65-1
Service 20 A Kokosan Alternator . . . . . . . . . 65-1
Nippon Denso Alternator
Replace Voltage Regulator . . . . . . . . . . . . 65-4
Disassemble . . . . . . . . . . . . . . . . . . . . . 65-6
Test Rotor . . . . . . . . . . . . . . . . . . . . . . . 65-7
Test Stator and Rectifier . . . . . . . . . . . . . 65-9
Assemble . . . . . . . . . . . . . . . . . . . . . . 65-12
Group 70—Ignition System
Service Ignition Coils . . . . . . . . . . . . . . . . . 70-1
Service Ignition Pulsers . . . . . . . . . . . . . . . . 70-2
And More——–

 

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**Total Pages: 172
**File Format: PDF
**Language: English
**Requirements: Adobe PDF Reader & WinZip
**Compatible: All Versions of Windows & Mac, Linux OS, Iphone, Ipad, Android etc…

 

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