Part of the Yanmar Parts Manuals.
Mike the crank on a high hour 3TNV88 and the next question is which undersize bearings Yanmar actually makes, and what number to put on the order sheet. This parts catalog answers that for the 3TNV88-N5FA, with exploded figures and factory part numbers for every assembly from cylinder block and crankshaft through the fuel injection pump, injectors, cooling water system, and starting motor.
It is Yanmar publication YOOF9000, an 18 page English catalog covering 3TNV88-N5FA engines manufactured since October 2003. Each illustration keys to a parts list on the following page, so you can put a name and number to the part in your hand without a dealer counter to lean on, then order with the engine model and serial number the way Yanmar asks.
Download the PDF and print the figures you need; pages that can get oily at the bench beat scrolling with dirty hands.
What's Inside This Yanmar 3TNV88-N5FA Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 3 | Fig.1. Cylinder Block |
| Gear Housing | 4 | Fig.2. Gear Housing |
| Flywheel Housing & Oil Sump | 5 | Fig.3. Flywheel Housing & Oil Sump |
| Cylinder Head & Bonnet | 6 | Fig.4. Cylinder Head & Bonnet |
| Suction Manifold & Air Cleaner | 7 | Fig.5. Suction Manifold & Air Cleaner |
| Exhaust Manifold & Silencer | 8 | Fig.6. Exhaust Manifold & Silencer, Loose Parts |
| Camshaft & Driving Gear | 9 | Fig.7. Camshaft & Driving Gear |
| Crankshaft & Piston | 10 | Fig.8. Crankshaft & Piston |
| Lub.Oil System | 11 | Fig.9. Lub.Oil System |
| Cooling Water System | 12 | Fig.10. Cooling Water System |
| Fuel Injection Pump | 13 | Fig.11. Fuel Injection Pump |
| Fuel Injection Valve | 14 | Fig.12. Fuel Injection Valve |
| Fuel Line | 15 | Fig.13. Fuel Line |
| Starting Motor | 16 | Fig.14. Starting Motor |
| Generator | 17 | Fig.15. Generator |
| Gasket Set | 18 | Fig.16. Gasket Set, Optional Parts |
Every system also includes a parts list.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Thermo switch activation temperature | 110 C | p. 12 |
| Main Metal Undersize | 0.25 | p. 3 |
| Piston Pin Diameter | 26 | p. 10 |
| Crankpin Metal Undersize | 0.25 | p. 10 |
| Piston Ring Oversize | 0.25 | p. 10 |
| Lub. Oil Pressure Switch Activation | 0.5KG | p. 11 |
| Lub. Oil Filter Size | 80x80L | p. 11 |
| V-Pulley Diameter | 110 | p. 12 |
| V-Belt Type/Size | A37.5 | p. 12 |
| Thermostat Opening Temperature | 71 | p. 12 |
| O-Ring G-type Diameter | 65.0 | p. 15 |
Yanmar 3TNV88-N5FA Common Problems This Manual Covers
Worn crank journals after teardown
Measuring a high hour crank often ends with journals under size and a decision to grind. The Crankshaft & Piston figure lists the 0.25 undersize crankpin metal and 0.25 oversize ring sets, so you can order rebuild parts by Yanmar number instead of guessing.
Manual Section: Crankshaft & Piston p. 10Overheating from cooling system wear
A stuck thermostat or a tired water pump lets temperature climb until the rings and bores pay for it. The Cooling Water System figure identifies the thermostat (71 degree opening), the thermo switch (110 C), and the A37.5 V-belt so replacements match what Yanmar fitted.
Manual Section: Cooling Water System p. 12Low oil pressure warnings
Oil starvation kills these engines fast, and a clogged filter or a failed switch can either cause the problem or hide it. The Lub.Oil System figure carries part numbers for the 80x80L oil filter and the 0.5KG oil pressure switch.
Manual Section: Lub.Oil System p. 11Hard starting from air in fuel
Air pulled through a perished line or O-ring makes a small diesel crank forever before it fires. The Fuel Line figure shows every pipe, clamp, and seal feeding the injection pump, so you can replace the leak path instead of bleeding the system again next week.
Manual Section: Fuel Line p. 15White smoke and fouled injectors
Contaminated fuel wears nozzles and shows up as white smoke, rough running, and lost power. The Fuel Injection Valve figure breaks each injector down into its serviceable parts with Yanmar numbers for reordering.
Manual Section: Fuel Injection Valve p. 14Slow cranking or dead starter
A starter that drags or just clicks is a common end of life failure on engines that live outdoors. The Starting Motor figure identifies the starter and its hardware so you can order an exact replacement rather than a near match.
Manual Section: Starting Motor p. 16Reusing gaskets on reassembly
Once the engine is stripped, old gaskets are a false economy. The Gasket Set figure lists the complete set under its own part number, along with optional parts, so everything goes back together on fresh sealing surfaces.
Manual Section: Gasket Set p. 18Frequently Asked Questions
Which engine does this parts catalog cover?
It covers the Yanmar 3TNV88-N5FA engine manufactured since October 2003, published as Yanmar catalog YOOF9000. The Preface instructs you to quote the engine model and serial number, plus each part name and number, on your order sheet. p. 1
Is this a service manual with torque specs and procedures?
No. It is a factory parts catalog: 16 exploded figures, each keyed to a numbered parts list, for identifying parts and quantities when ordering. It does not contain repair procedures, torque sequences, or clearance tables.
Does it list undersize bearings and oversize rings for a rebuild?
Yes. The Crankshaft & Piston section lists 0.25 undersize crankpin metal and 0.25 oversize ring sets, and the Cylinder Block section lists 0.25 undersize main metal, so you can order bearing and ring sizes to match the machining. p. 10
Can I identify cooling system parts from it?
Yes. The Cooling Water System section on page 12 lists the thermostat (71 degree opening), the thermo switch (110 C), the A37.5 V-belt, and the V-pulley (D=110), each with its Yanmar part number and quantity. p. 12
What format is this manual in?
You get a 18-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Can I print specific sections of this Parts Catalog?
Yes. The PDF has no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
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