Part of the Yanmar Repair Manuals.
A connecting rod hanging half torqued on the stand stops the whole rebuild if the one figure you need is missing. This Yanmar service manual for the 1SM, 2SM, and 3SM diesel engines is where those figures live: the 9 kg-m (65 ft-lb) rod bolt torque, the 160 kg/cm² injection pressure for the nozzle tester, the 2 to 2.5 kg/cm² lubricating oil pressure the factory set at delivery.
Across 104 pages (publication A0A1005.8511) it walks the full teardown and reassembly in order, then handles the fuel injection pump, injection valve, cylinder head, cylinder liner replacement, pistons and rods, and clutch housing separately. Adjustment procedures, maintenance standards for main parts, and a troubleshooting chapter covering the reduction reversing gear round it out, with approved oils listed at the back.
It downloads as a bookmarked PDF, so the same book is on the bench, on a laptop, or printed page by page wherever the engine sits apart.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Preface | 6 | |
| Outline of Structures | 7 | |
| Fuel and Lubricating Oil | 8-12 | Fuel (Light Oil, Properties of Fuel & Engine Performances, Cautions on Fuel), Lubricating Oil (Engine Oil) |
| Servicing and Periodical Checking | 13-17 | 3-1.Main Points of Servicing and Training, 3-2.Time of Periodical Checking |
| Engine Disassembly | 18-34 | 4-1.Preparation for Disassembly, 4-2.Precautions for Disassembly, 4-3.Disassembling Procedure |
| Engine Reassembly | 35-52 | 5-1.Precautions for Reassembly, 5-2.Reassembling Procedure |
| Disassembly and Reassembly of Other Parts | 53-71 | 6-1.Fuel Injectoin Pump, 6-2.Fuel Injection Valve, 6-3.Cylinder Head, 6-4.Replacement of Cylinder Liner, 6-5.Piston Rings, Piston and Connecting Rod, 6-6.Clutch Housing |
| Adjustment and Servicing | 72-90 | 7-1.How to Adjust the Adjusting Part, 7-2.Servicing and Repairing of Major Parts, 7-3.Maintenance Standards of Main Parts |
| Countermeasures to Engine Troubles | 91-99 | 8-1.Engine Troubles, Causes and Measures, 8-2.Causes and Measures for Reduction Reversing Gear |
| Storage of Engine | 100 | |
| List of Approved Oils | 101-103 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Piston & Connecting Rod bolt torque | 9 kg-m (65 ft-lb) | p. 66 |
| Fuel injection pressure | 160 kg/cm² | p. 70 |
| New engine lubricating oil pressure (delivery from factory) | 2~2.5 kg/cm² | p. 74 |
| Lubricating oil pressure (cold weather start) | 4 kg/cm² | p. 74 |
| Lub. Oil Change Interval | 3000 hr. | p. 16 |
| Lub. Oil Pressure (delivery) | 2-2.5 kg/cm² | p. 74 |
