Part of the Yanmar Parts Manuals.
The rod caps are off, the crankpin bearings are scored, and the job stalls right there for want of one part number. This PDF is Yanmar's own parts catalog for the 3TNE78A-B1 diesel, publication Y00B5871, and its listings are how you turn a bench full of worn pieces back into an order sheet.
Seventeen sections run through the whole engine: cylinder block, cylinder head and bonnet, camshaft and driving gear, crankshaft and piston, the lubrication and cooling water systems, fuel injection pump, governor, injection pipes and nozzles, starting motor, and generator, down to the optional gasket set. Each one itemizes the assemblies and the small hardware (valve stem seals, thrust bearings, delivery valve shims) that a rebuild actually consumes.
At 36 pages and under a megabyte, it opens on anything and prints clean, so the part numbers are at the bench, or wherever the engine happens to be, when you need them.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | Block Assembly, Plugs, Main Bearings, Thrust Bearings, Camshaft Bush, Cylinder Head Bolts | |
| Gear Housing | Flange, Oil Seal, Lubrication Oil Supply Cap, Cover, Gasket, O-Rings, Bolts | |
| Flywheel HOUSING&LUB.OIL Sump | Flywheel Housing, Cover, Plugs, Sump Assembly, Drain Plug, Oil Seal Case | |
| Cylinder Head & Bonnet | Head Assembly, Valve Guides, Valves (suction/exhaust), Valve Springs, Retainers, Cotters, Valve Stem Seals, Rocker Arm Assembly | |
| Suction Manifold & Air Cleaner | Suction Manifold, Air Cleaner Assembly, Elements, Dust Pan, Wing Bolts, Air Cleaner Supports, Heater | |
| Exhaust Manifold & Silencer | Exhaust Manifold, Gasket, Silencer, Stay, Bolts, Nuts | |
| Camshaft & Driving Gear | Tappets, Push Rods, Camshaft Assembly, Thrust Metal, Camshaft Gear, Idle Gear, Idle Gear Bush | |
| Crankshaft & Piston | Crankshaft Assembly, Crankshaft Gear, Flywheel, Piston w/rings, Piston Pin, Connecting Rod Assembly, Crankpin Bearings | |
| LUB.OIL System | Lubrication Oil Pump, Dipstick, Oil Inlet Pipe, Oil Strainer, Oil Filter, Oil Pressure Switch | |
| Cooling Water System | Water Pump, V-Belt, Fan, Thermostat, Thermoswitch, Cooling Water Pipe | |
| Fuel Injection Pump | Plunger, Barrel, Delivery Valve, Control Rack, Shims, Springs | |
| Governor | Links, Levers, Shafts, Springs, Weights, O-Rings, Washers, Bolts | |
| Fuel Injection Pipe | Fuel Injection Valve Assembly, Nozzle Assembly, Nozzle Holder, Nozzle Springs, Shims, Injection Pipes | |
| Fuel Oil Pipe | 28-29 | Fuel Strainer, Fuel Filter, Fuel Pipes, Clamps, Fuel Oil Pump |
| Starting Motor | Starter Assembly, Armature, Bearings, Field Coil, Brushes, Clutch, Pinion, Shift Lever | |
| Generator | Assembly, Washers, Collar, Stator, Coupler, Flywheel Assembly, Adjuster | |
| Gasket SET(OPTIONAL) & Tool | Liquid Gasket, Flex Horn |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Stud Size | M6 x 30 mm | p. 8 |
| Thermoswitch Activation Temperature | 110 °C | p. 20 |
| V-Belt Type | A-38 | p. 20 |
| Bolt Size | M10 x 65 mm | p. 32 |
