Part of the Yanmar Parts Manuals.
Looking for the exact factory part numbers for your engine rebuild? This 126-page Yanmar TB75/80FR, 4TNE98-TB, 4TNV98-WTB parts catalog PDF breaks down every single component of your diesel power plant. You get detailed exploded diagrams showing the exact assembly order for the cylinder block, fuel injection pump, and gear housing. Open to any section and find complete parts lists with factory numbers, component descriptions, and mounting hardware for everything from the cooling water system to the complete gasket set. Stop guessing if you need the A42 V-belt or the 41.5 variant, and confirm the exact 0.25 undersize main bearing required for your crank. Getting the wrong part stalls the whole shop. Download this file, use the built-in bookmarks to jump straight to your subsystem, and get your parts order right the first time.
What's Inside This Yanmar 4TNE98-TB Parts Manual
| System | Pages |
|---|---|
| Cylinder Block | - |
| Gear Housing | - |
| Flywheel Housing & Oil Sump | - |
| Cylinder Head & Bonnet | - |
| Suction Manifold & Air Cleaner | - |
| Exhaust Manifold & Silencer | - |
| Camshaft & Driving Gear | - |
| Crankshaft & Piston | - |
| Lub.Oil System | - |
| Cooling Water System | - |
| Fuel Injection Pump | - |
| Governor | - |
| Fuel Injection Valve | - |
| Fuel Line | - |
| Engine Stop Device | - |
| Starting Motor | - |
| Generator | - |
| Gasket Set | - |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Oil Pressure Switch Activation | 0.5 KG | p. 21 |
| Main Bearing Undersize | 0.25 | p. 5 |
| Thrust Bearing Oversize | 0.25 | p. 5 |
| TB75/80FR 4TNE98-TB, 4TNE98-TBA | ||
| V-Belt Type | A42 | p. 23 |
| 4TNV98-WTB | ||
| V-Belt Type | 41.5 | p. 111 |
Yanmar 4TNE98-TB Common Problems This Manual Covers
Yanmar 4TNE98-TB low oil pressure warning light stays on, heavy lower end engine knock, or sudden internal damage
Check the Engine Parts Diagram on page 4. Locate the oil pressure switch and verify its activation rating is 0.5 KG. Cross-reference the main bearing undersize kit at 0.25 on page 5 to order the correct replacement components for a complete rebuild.
Manual Section: Engine for 4TNE98-Tb p. 4Worn water pump drive belt squealing, fluctuating engine temperature, or heat-related power loss
Inspect the exploded view for the cooling system drive on page 23. Verify you are ordering the correct A42 type V-Belt for your machine. Match your serial number against the parts list to ensure proper fitment before installing the new belt.
Manual Section: Engine for 4TNE98-Tb p. 23WTB model water pump drive failure, severe overheating, fluctuating temperature, or heat-related power loss
Review the cooling system parts breakdown on page 111. Order the specific 41.5 type V-belt required for the 4TNV98-WTB engine configuration. Check the interchangeability marks in the parts index to confirm you have the latest updated part number for the assembly.
Manual Section: Engine for 4TNV98-Wtb p. 111Heavy lower end knocking noise under load or sudden internal damage during operation
Examine the engine block exploded diagram on page 4. Find the thrust bearing oversize replacement parts listed at 0.25 on page 5. Use the machine serial number guide to match the exact bearing kit required for your specific block casting.
Manual Section: Engine for 4TNE98-Tb p. 5Frequently Asked Questions
What do I get after purchasing this Yanmar TB75/80FR, 4TNE98-TB, 4TNE98-TBA?
Immediate download of the complete 126-page searchable Parts Catalog (12 MB). Access it on any device, from a laptop at your desk to a phone in the field.
Am I able to print pages from this Yanmar TB75/80FR, 4TNE98-TB, 4TNE98-TBA?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
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