Part of the Yanmar Parts Manuals.
Mic the crank journals on a Yanmar 4TNV98CT-WTBZ and the next call is standard shells or 0.25 undersize, and this parts catalog (Yanmar publication YOOF2161) confirms the undersize main and crank pin bearings exist before the machine shop cuts anything. It covers the 4TNV98CT-WTBZ common rail turbocharged diesel, serial prefix 00185-, and lists the 4JH-DT, 4JH-DTZ, 4JH-DTZP, 4JH-DTZA and 4JH-DTZY model codes.
Twenty-one numbered figures run from the Cylinder Block through the Gasket Set: cylinder head, camshaft and gears, the RHF5 turbocharger, fuel supply pump, common rail injectors, DPF, starter, alternator, ECU and harnesses. With the engine stripped on the stand, you match the figure to the part in your hand and order the exact Yanmar number instead of guessing.
It is a 50 page bookmarked PDF in English, bought once and yours to keep, printable page by page for the bench. Every hour the engine sits apart waiting on a wrong shell costs more than this catalog does.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 6-7 | Camshaft Bush, Thrust Bearing, Main Spare Parts Bearing, Under-Sized Part Bearing, Thrust Over-Sized Part Bearing |
| Gear Housing | 8-9 | Oil Pump Assy, Filler Cover, Pipe, Oil Seal, Cover |
| Flywheel Housing & Oil Sump | 10-11 | Cap, D115/95XT11 Seal, Oil Sump Assy, Pin |
| Cylinder Head & Bonnet | 12-13 | Valve Cap, Intake Valve, Exhaust Valve, Valve Spring, Spring Retainer, Valve Stem Seal, Injector Gasket, Arm Support Assy |
| Suction Manifold | 14-15 | Stud, Bolt, Clamp, Washer |
| Exhaust Manifold | 16-17 | 12X1 Gasket, EGR Cooler Gasket, Gasket, Stud |
| Diesel Particulate Filter (DPF) | 18-19 | Silencer Gasket, Bolt, Nut |
| Camshaft & Driving Gear | 20-21 | Tappet, Push Rod, Thrust Bearing, Idle Gear Assy, Idle Gear Spare Parts Bush |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main Bearing Undersize | 0.25 US | p. 7 |
| Thrust Bearing Oversize | 0.25 OS | p. 7 |
| Flywheel Housing Oil Seal Dimension | D115/95XT11 | p. 11 |
| Exhaust Manifold Bolt Grade | M10x95, Grade 10.9T | p. 17 |
| EGR Cooler Bolt Grade | M8x50, Grade 10.9 | p. 17 |
| DPF Bolt Grade | M8x28, Grade 10.9T | p. 19 |
| Crank Pin Bearing Undersize | 0.25 US | p. 25 |
| Piston Assembly Oversize | 0.25 OS | p. 25 |
| Piston Ring Assembly Oversize | 0.25 OS | p. 25 |
| Cooling Water V-Belt Size | B 44.5 | p. 31 |
