Part of the Yanmar Parts Manuals.
Looking for exact replacement numbers for your excavator engine? This 124-page Yanmar 3TNE82A-ETB, 3TNV82A-QTB, QTB1, TB125 Parts Catalog PDF breaks down the complete block, fuel system, and cooling assembly for your TB125. You get clear exploded views showing the exact orientation of every cylinder head, gear housing, and fuel injection pump component. Open to detailed parts lists featuring factory numbers for the governor assembly, exhaust manifold, and starting motor to guarantee accurate ordering. Verify you are sourcing the correct A-38 V-belt for the 3TNE series, or confirm the 7x14 crankshaft key dimensions before placing a parts order. Ordering the wrong component keeps your machine dead in the dirt. Grab this bookmarked file right now, pull up the correct number on your phone, and get the exact part shipped today.
What's Inside This Yanmar 3TNE82A / 3TNV82A Series Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 5-6 | Cylinder Block Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Gear Housing | 7-8 | Gear Housing Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Flywheel Housing & Oil Sump | 9-10 | Flywheel Housing & Oil Sump Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Cylinder Head & Bonnet | 11-12 | Cylinder Head & Bonnet Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Suction Manifold & Air Cleaner | 13-14 | Suction Manifold & Air Cleaner Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Exhaust Manifold & Silencer | 15-16 | Exhaust Manifold & Silencer Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Camshaft & Driving Gear | 17-18 | Camshaft & Driving Gear Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Crankshaft & Piston | 19-20 | Crankshaft & Piston Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Lub.Oil System | 21-22 | Lub.Oil System Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Cooling Water System | 23-24 | Cooling Water System Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Fuel Injection Pump | 25-26 | Fuel Injection Pump Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Governor | 27-28 | Governor Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Fuel Injection Valve | 29-30 | Fuel Injection Valve Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Fuel Line | 31-32 | Fuel Line Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Starting Motor | 33-34 | Starting Motor Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Generator | 35-36 | Generator Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Gasket Set | 37 | Gasket Set Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Parts Index | 38-41 | Parts Index Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Exhaust Manifold & Silencer (Qtb) | 95-96 | Exhaust Manifold & Silencer (Qtb) Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Exhaust Manifold & Silencer (QTB1) | 97-98 | Exhaust Manifold & Silencer (QTB1) Parts, Exploded Parts Diagram, Part Numbers, Quantities |
| Tool & Gasket Set | 121 | Tool & Gasket Set Parts, Exploded Parts Diagram, Part Numbers, Quantities |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| L.O. Pressure Switch Activation | 0.5 KG | p. 21 |
| Crankshaft Key Size | 7X 14 | p. 19 |
| Main Bearing Undersize | 0.25 | p. 5 |
| 3TNE82A-ETB, 3TNE82A-TB | ||
| Cooling Fan Diameter | 325MM | p. 23 |
| V-Belt Size (3TNE82A-ETB, 3TNE82A-TB) | A-38 | p. 23 |
| Governor Link Length (Mark 0) | 30 | p. 27 |
| 3TNV82A-QTB, QTB1 | ||
| V-Belt Size (3TNV82A-QTB, QTB1) | A36.5 | p. 105 |
