Part of the Yanmar Repair Manuals.
A TNE that cranks strong but fires late is asking about compression, valve lash, or injection, and guessing wrong costs a weekend of parts. This Yanmar service manual (publication M9961-02E050, 422 pages, PDF download) settles it: measure compression pressure, check injector pop pressure and spray pattern, then read the results against factory service data.
Coverage runs across the TNE and TNV industrial diesel families built from 1995 to 2008, from the two cylinder 2TNE68 through the 3TNE and 4TNE range, including the turbocharged 3TNE84T and 4TNE84T, with service data extending to TNV models such as the 3TNV82A, 4TNV94L and 4TNV106.
Once the block is on the stand, you will live in the measuring procedures chapter: wear limits and corrective action for the cylinder head, pistons and rings, connecting rods, crankshaft and camshaft, backed by full disassembly and reassembly steps and exploded views. Thirty bookmarks take you from symptom to spec in a couple of clicks.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Specifications and Performance | 7-19 | 2Tne68, 3Tne68, 3Tne74, 3Tne78A, 3Tne82A, 3Tne82, 3Tne84, 3Tne88 |
| Cross Sectional Views | 20-21 | Special Swirl Pre-Combustion Chamber System, Direct Injection System |
| Cooling Water, Lubricating Oil and Fuel Oil | 22-24 | Cooling Water, Lubricating Oil, Fuel Oil, Cooling Water System, Lubrication System, Fuel System |
| Troubleshooting | 25-27 | Trouble Causes and Remedies, Trouble Diagnosis Through Measurement of Compression Pressure |
| Special Service Tools and Measuring Instruments | 28-32 | Valve Guide, Connecting Rod Bushing, Valve Spring, Filter, Camshaft Bushing, Cylinder Liner, Piston, Piston Ring |
| Measurement, Inspection and Adjustment | 33-47 | Measuring the Compression Pressure, Valve Head Clearance, Checking the V-Belt Tension, Measuring and Checking the Injection Pressure and Spray Patterns of the Fuel Injection Valve |
| Measuring Procedures, Service Data and Corrective Action | 48-74 | Cylinder Head, Cylinder Block, Valve Rocker Arm, Piston and Piston Ring, Connecting Rod, Camshaft, Crankshaft, Gears |
| Disassembly and Reassembly | 75-83 | Disassembly, Precautions Before and During Reassembly |
| Service Data | 84-89 | Cylinder Head, Cylinder Block, Valve Rocker Arm, Piston, Piston Ring, Connecting Rod, Camshaft, Crankshaft |
| Fuel Injection Pump for Indirect Injection System | 91-95 | Fuel Injection Pump, Delivery Valve, Plunger, Fuel Control Rack, Fuel Control Pinion, Plunger Guide Outer Roller, Plunger Guide Inner Roller, Plunger Roller Guide |
| Fuel Injection Pump for Direct Injection System | 96-108 | Fuel Injection Pump, Plunger, Delivery Valve, Plunger Guide, Plunger Barrel, Fuel Injection Pump Camshaft, Bearing, Control Rack |
| Governor | 109-120 | Fo Limiter Assembly, Angleich Spring Assembly, Governor Lever Assembly, Governor Weight Assembly, Torque Spring Assembly |
| Turbocharger | 121-126 | Specifications, Construction, Waste Gate Valve Adjusting Method, Exploded View of Turbocharger, Tightening Torque, Service Standards |
| Service Information for Carb Ulg Regulation | 127-133 | Emission Control Labels, Limiting the No-Load Maximum and Minimum Revolutions, Limiting the Fuel Injection Volume |
| Exploded Views of Engine Components | 134-422 | Cylinder Head, Piston, Connecting Rod, Crankshaft, Camshaft, Fuel Injection Pump, Turbocharger, Gears |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 3TNV82A | ||
| Cylinder head bolt torque, 3TNV82A | 61.7 to 65.7 N•m | p. 354 |
| TNV84 to 88 | ||
| Cylinder head bolt torque, TNV84 to 88 | 85.3 to 91.1 N•m | p. 354 |
| TNV series | ||
| Fuel filter element replacement interval | Every 250 hours or 3 months | p. 174 |
| Water separator draining interval | Daily | p. 174 |
| Water separator cleaning interval | Every 250 hours or 3 months | p. 174 |
| 3TNV82A to 4TNV106 (T) | ||
| Fuel filter element tightening torque | 20 to 24 N•m | p. 178 |
| 2TNE68 | ||
| Cooling water capacity (engine only), 2TNE68 | 0.6 L | p. 7 |
| 3TNE68 | ||
| Cooling water capacity (engine only), 3TNE68 | 0.9 L | p. 8 |
| RHB31 | ||
| Blower impeller set nut tightening torque (left-handed screw), RHB31 | 0.9 to 1.1 N•m | p. 277 |
| RHB51 | ||
| Blower impeller set nut tightening torque (left-handed screw), RHB51 | 1.8 to 2.2 N•m | p. 277 |
| All Models | ||
| Thermostat valve opening temperature | 69.5-72.5 °C | p. 45 |
| Thermostat lift height | Min. 4.5 mm (at 85°C and above) | p. 89 |
