Part of the Yanmar Parts Manuals.
Somewhere between a seized water pump and a parts counter that has never heard of a 3TNE68L-UBC, an engine sits waiting. This 32 page Yanmar parts catalog is how you stop guessing at numbers for the 3TNE68L-UBC industrial diesel, including the (B19) build, with exploded diagrams running from the Cylinder Block through the Governor, Starting Motor, and Generator.
Every wearing assembly gets its own plate: crankshaft and pistons with rings and bearings, camshaft and tappets, cylinder head with suction and exhaust valves, the fuel injection pump down to plunger and delivery valve, the lube oil pump and filter, and the cooling water pump with thermostat and V-belt.
Whether this engine lives in a genset, a pump set, or in pieces on your bench, the catalog turns a box of worn parts into an order that comes back right the first time.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 3-4 | Gear Housing Assy, Gear Case Cover Assy, Oil Seal HTC456208, Knock Pipe, Cover, Gasket, Lub. Oil Supply Cap, Blind Cover |
| Gear Housing | 5-6 | Flywheel Housing, Flywheel Cover Cap, Oil Seal Case Assy, Oil Seal, Oil Sump Assy, Oil Sump Spacer |
| Flywheel Housing & Lub. Oil Sump | 7-8 | Head Bonnet Assy, Lub. Oil Supply Cap, Joint, Shelter Plate, Gasket, Bonnet Gasket, Pipe 12X, Knob |
| Cylinder Head & Bonnet | 9-10 | Suction Manifold, Suction Manifold Gasket, Exhaust Manifold, Exhaust Manifold Gasket |
| Suction & Exhaust Manifold | 11-12 | Camshaft Assy, Camshaft Gear, Thrust Bearing, Tappet, Push Rod, Fuel Cam Bearing, Fuel Injection Pump Cam Assy, Fuel Injection Pump Gear |
| Camshaft & Driving Gear | 13-14 | Crankshaft Assy, Crankshaft Gear, Flywheel Assy, Ring Gear, V-Pulley, Piston W/ Rings, Ring Set, Connecting Rod Assy |
| Crankshaft & Piston | 15-16 | Lub. Oil Pump Assy, Lub. Oil Pump Gasket, Dipstick Guide, Dipstick, Lub. Oil Filter, Oil Press Valve Assy, Oil Intake Pipe Assy, Oil Pressure Switch |
| Lub. Oil System | 17-18 | C.w Pump Assy, Cooling Water Pump Gasket, Thermo Switch, Gasket, Cooling Water Pump V-Pulley, V-Belt, Thermostat Cover, Thermostat |
| Cooling Water System | 19-20 | Fuel Injection Pump Assy, Plunger W/ Barrel, Retainer, Plunger Spring, Delivery Valve W/ Seat, Delivery Valve Spring, Delivery Valve Holder, Delivery Gasket |
| Fuel Injection Device | 21-22 | Fuel Pipe W/ Joint, Pipe Joint, Fuel Pipe, Fuel Oil Pipe Assy, Fo-T, Gasket, Pipe Joint Bolt Assy, Fuel Strainer |
| Fuel Line | 23-24 | Gasket, Governor Case Cover, Governor Weight Assy, Governor Sleeve, Governor Case, Link Color, Link, Spacer Assy |
| Governor | 25-26 | Starter, Amature Assy, Thrust Washer Kit, Pinion Stopper Set, Field Coil Assy, Brush, Rear Cover Assy, Starter Metal |
| Starting Motor | 27-28 | Generator, Collar, Plate Assy, Stator, Coupler, Flywheel Assy, Belt Adjuster |
| Generator | 29-32 | Gasket Set, Cylinder Head Gasket, Valve Stem Seal, Nozzle Gasket, Bonnet Gasket, Suction Manifold Gasket, Exhaust Manifold Gasket, Lub. Oil Pump Gasket |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Plug type/size | PT1/8 | p. 2 |
| Bolt size | M 6X 12 PLATED | p. 2 |
| Bearing, Thrust size | .25US | p. 2 |
| Stud size | M 8X 22 | p. 4 |
| Oil Seal type | HTC456208 | p. 4 |
| O-Ring size | 1A P 12.0 | p. 4 |
| Fan diameter | D=290 | p. 18 |
| Pipe length | L=500 | p. 22 |
