All 43 pages of this Yanmar 4TN84TL-RBS Parts Catalog (OEM #Y00B5001) map every component in the 4TN84TL-RBS and B50W industrial diesel engine, from crankshaft to governor. Inside: exploded views covering every major assembly, including the cylinder block, gear housing, flywheel housing, turbocharger, fuel injection pump and valve, lubrication oil system, cooling water system, and starting motor. You get factory part numbers and cross-references for each sub-assembly, including intake manifold hardware, fuel pipe clamps and strainers, and a gasket section listing cylinder head gaskets, O-rings, and exhaust manifold seals. Fuel pipe dimensions run 16x950 mm; the air cleaner filter measures 80x80L mm. Stop digging through parts microfiche that doesn't match your engine. Bookmarked sections let you jump straight to any assembly, pull the exact OEM number, and order the right part the first time.
What's Inside This Yanmar 4TN84TL-RBS (B50W) Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Flywheel Housing & Lub.Oil Sump | 1-8 | Cylinder Block, Engine 4TN84TL-Rbs, Gear Housing |
| Camshaft & Driving Gear | 9-16 | Suc.Manifold & Air Cleaner, Cylinder Head & Bonnet, Exh. Manifold & Silencer |
| Lub. Oil Pipe | 17-24 | Crankshaft & Piston, Turbocharger, Lub. Oil System |
| Fuel Injection Pump | 25-28 | Cooling Water System |
| Fuel Pipe | 29-33 | Fuel Injection Valve |
| Engine Stop Device | 34-37 | Governor |
| Generator | 38-41 | Starting Motor |
| Gasket Set (Optional) & Tool | 42-43 | - |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Pipe Dimension | 16x950 mm | p. 8 |
| Filter Size | 80x80L mm | p. 20 |
Yanmar 4TN84TL-RBS (B50W) Common Problems This Manual Covers
Yanmar 4TN84TL-RBS fuel pipe parts unclear, correct strainer and filter assembly hard to identify p. 31
Check the fuel pipe exploded view on page 31. The section catalogs the fuel filter, strainer, valve, and O-ring as separate line items with individual part numbers. The 16x950 mm delivery pipe (part #23065-160950) is a distinct catalog entry from the filter assembly. Cross-reference all positions against your serial number range before submitting the order.
Manual Section: Fuel PipeAir cleaner element part number unclear, wrong replacement ordered twice from dealer p. 11
Open the Suc.Manifold & Air Cleaner exploded view on page 11. The element, clamp, hose, and bracket each carry individual part numbers in the diagram. Verify the element part number against your serial number range before ordering; the housing and element are separate catalog entries and cannot be consolidated into a single assembly part number.
Manual Section: Suc.Manifold & Air CleanerOil sump drain plug seal washer and strainer part numbers missing from shop quote p. 7
Locate the Flywheel Housing & Lub.Oil Sump section on page 7. The exploded view itemizes the sump, plug, seal washer, cap, and gasket individually. The 80x80L oil strainer filter (part #129150-35151) is a separate line item on page 20. Match each component by position number in the diagram before placing the order.
Manual Section: Flywheel Housing & Lub.Oil SumpComplete overhaul gasket kit contents unknown, unsure which seals are included in optional set p. 42
Turn to the Gasket Set section on page 42. The optional kit lists individual components including the cylinder head gasket, exhaust manifold gasket, O-rings, and seals, each with its own part number. Check the table of contents on page 43 to confirm full kit scope and verify all required seals appear in the listing before committing to the rebuild order.
Manual Section: Gasket Set (Optional) & ToolWater pump impeller and thermostat part numbers needed for cooling system service
Open the cooling parts diagram. The impeller, pump housing, thermostat, and fasteners are each listed as separate line items with individual part numbers. Locate each component by its position number in the exploded view and confirm serial number range compatibility; the pump and thermostat are distinct catalog entries, not bundled into a single kit part number.
Manual Section: Cooling PartsFrequently Asked Questions
How do you fix yanmar 4TN84TL-RBS fuel pipe parts unclear, correct strainer and filter assembly hard to identify?
Check the fuel pipe exploded view on page 31. The section catalogs the fuel filter, strainer, valve, and O-ring as separate line items with individual part numbers. The 16x950 mm delivery pipe (part #23065-160950) is a distinct catalog entry from the filter assembly. Cross-reference all positions against your serial number range before submitting the order.
How do you fix air cleaner element part number unclear, wrong replacement ordered twice from dealer?
Open the Suc.Manifold & Air Cleaner exploded view on page 11. The element, clamp, hose, and bracket each carry individual part numbers in the diagram. Verify the element part number against your serial number range before ordering; the housing and element are separate catalog entries and cannot be consolidated into a single assembly part number.
How do you fix oil sump drain plug seal washer and strainer part numbers missing from shop quote?
Locate the Flywheel Housing & Lub.Oil Sump section on page 7. The exploded view itemizes the sump, plug, seal washer, cap, and gasket individually. The 80x80L oil strainer filter (part #129150-35151) is a separate line item on page 20. Match each component by position number in the diagram before placing the order.
How do you fix complete overhaul gasket kit contents unknown, unsure which seals are included in optional set?
Turn to the Gasket Set section on page 42. The optional kit lists individual components including the cylinder head gasket, exhaust manifold gasket, O-rings, and seals, each with its own part number. Check the table of contents on page 43 to confirm full kit scope and verify all required seals appear in the listing before committing to the rebuild order.
Is this Yanmar 4TN84TL-RBS, 4TN84TL-RBS (B50W) Parts Catalog a digital download?
A 43-page Parts Catalog in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Is this Yanmar 4TN84TL-RBS, 4TN84TL-RBS (B50W) Parts Catalog printable?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
Document Quality
This document is a scanned PDF with an OCR layer, allowing you to search and copy all text, including the parts lists and labels within diagrams. The text quality is consistently crisp and easy to read throughout the document. All diagrams and illustrations are clear raster images, and their labels are fully readable. The pages are clean, free of scan artifacts, stains, or skewed content, and there are no notable blank or filler pages.
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