This 46-page 4TNV86CT-PTB Parts Catalog covers the complete parts breakdown for the P-TB260BEAC engine family. Inside, every major assembly is mapped from the cylinder block and gear housing through the crankshaft, piston, DPF, and turbocharger. You get OEM part numbers for every component in the exploded views, spanning lube oil, camshaft, flywheel housing, cylinder head, and cooling water system, with cross-reference callouts so you match a worn part to its factory number without guessing. Pull the crank and measure wear: the catalog lists the 0.25mm undersize main bearing by part number so you call in the right spec first time. No more reading serial numbers to a counter and hoping they match. Bookmarked by assembly, so you jump straight to the right section and read out the part number yourself.
What's Inside This Yanmar 4TNV86CT-PTB Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 4-5 | Camshaft Bush, Thrust Bearing Assy, Main Spare Parts Bearing Assy, Main Under-Sized Part Bearing Assy, Thrust Over-Sized Part Bearing |
| Gear Housing | 6-7 | Filler Cap, Pipe, Oil Seal, Pump Cover |
| Flywheel Housing & Oil Sump | 8-9 | Cap, Oil-Pan Spacer, Oil Pan Assy, Oil Seal Case Assy, Oil Seal |
| Cylinder Head & Bonnet | 10-12 | Rocker Shaft Assy, Rocker Arm Shaft, Rocker Arm Support, Rocker Spring, Rocker Arm Assy, Valve Cap, Suction Valve, Valve Spring |
| Suction Manifold | 13-14 | Stud, Bolt, Clamp, Washer |
| Exhaust Manifold | 15-16 | 12X1 Gasket, Gasket, Bolt, Clamp |
| Diesel Particulate Filter (DPF) | 17-18 | Silencer Gasket, Bolt, Nut |
| Camshaft & Driving Gear | 19-20 | Tappet, Push-Rod, Thrust Bearing, Idle Gear Spare Parts Bush |
| Turbine | 21-22 | Turbine Assy, Gasket, Bolt, Stud, Nut |
| Crankshaft & Piston | 23-24 | Crankshaft Assy, Crankshaft Gear, Crank V-Pulley, Ring Gear, Ring, Connecting Rod Assy, Crank Pin Bearing, Piston Pin Spare Parts Bearing |
| Lub.Oil System | 25-26 | Pump Gasket, Dipstick, Dipstick Guide, Gasket, Oil Inlet Pipe Assy, Oil Cooler Assy, Oil Cooler Bracket, Filter Bracket Assy |
| Lub.Oil Pipe | 27-28 | Hydraulic Switch, Retainer, 10X1 Gasket, Rubber Joint, PT3 Elbow, Check Valve Assy, Cooling Nozzle |
| Cooling Water System | 29-46 | Water Pump Gasket, Pump Plate, Joint, PT1 Elbow, Thermostat Gasket, 8X1 Gasket, Cooling Water Pump V-Pulley, A37 V-Belt |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main Bearing Undersize | 0.25mm | p. 5 |
Yanmar 4TNV86CT-PTB Common Problems This Manual Covers
Yanmar 4TNV86CT-PTB injector part number unclear when ordering p. 31
Check the fuel system parts list on page 31. Injectors, the fuel rail assembly, and the rail pressure sensor are itemized separately. Confirm your exact engine suffix before ordering; sub-components can differ between variants. Cross-reference the parts index for serial number applicability before placing the order.
Manual Section: Cooling Water SystemWater pump assembly and impeller part numbers listed separately, kit versus individual components unclear p. 29
Open the cooling system diagram on page 29. The water pump assembly, impeller, thermostat, V-belt, and hose assemblies are listed as individual line items, not as a kit. Identify in the exploded view exactly which sub-components you need. The fan and belt carry separate part numbers, so order each entry individually.
Manual Section: Cooling Water SystemOil filter, dipstick, and oil cooler part numbers scattered across lub oil section p. 25
Open the Lub.Oil System diagram on page 25. The pump assembly, filter assembly, oil cooler, dipstick, and cooling water pipe are listed as separate entries. Identify each component in the exploded view before ordering. For oil pipe joints, elbows, and rubber hoses, cross-reference the Lub.Oil Pipe section starting on page 27.
Manual Section: Lub.Oil SystemCrankshaft main bearing part number needed, standard versus undersize not clear from parts diagram p. 23
Open the Crankshaft & Piston diagram on page 23. Bearings, connecting rods, ring assemblies, and pistons are itemized separately. If the crankshaft has been reground, the standard bearing will not fit. Check page 5: the only listed undersize is 0.25mm. Order the undersize bearing part number that matches the crank pin spec on that page.
Manual Section: Crankshaft & PistonDPF assembly components unclear, DOC case and soot filter case appear as separate line items p. 17
Check the DPF exhaust parts diagram on page 17. The DPF assembly, DOC case, and soot filter case are listed as individual components, not sold as one unit. DPF sensors and associated brackets also appear as separate entries on the same page. Identify the specific sub-component in the exploded view before ordering to avoid purchasing the full assembly.
Manual Section: Diesel Particulate Filter (DPF)Cylinder head gasket part number needed but bonnet components and head gasket share the same section p. 10
Open the Cylinder Head & Bonnet diagram on page 10. The head gasket, valve cover gasket, and bonnet components are each listed with separate part numbers. Locate the specific gasket in the exploded view before ordering. Verify the part number against your engine serial number range using the parts index, as gasket specs can vary across the engine serial range.
Manual Section: Cylinder Head & BonnetFrequently Asked Questions
What are the replacement specifications for Fuel filter?
The manual identifies several fuel filter components, such as the "FILTE ASSY, FO" with part number Y129A00-55600 and the "FILTER, FUEL OIL" with part number Y129A00-55800. However, specific replacement specifications like intervals or technical details are not provided in this parts catalog.
What are the replacement specifications for Oil filter?
The manual lists the "FILTER ASSY, D80X80L" with part number Y129150-35153, located in the Lub.Oil System section. However, specific replacement specifications such as intervals or technical details are not provided in this parts catalog.
How do you fix injector part number unclear when ordering?
Check the fuel system parts list on page 31. Injectors, the fuel rail assembly, and the rail pressure sensor are itemized separately. Confirm your exact engine suffix before ordering; sub-components can differ between variants. Cross-reference the parts index for serial number applicability before placing the order.
How do you fix water pump assembly and impeller part numbers listed separately, kit versus individual components unclear?
Open the cooling system diagram on page 29. The water pump assembly, impeller, thermostat, V-belt, and hose assemblies are listed as individual line items, not as a kit. Identify in the exploded view exactly which sub-components you need. The fan and belt carry separate part numbers, so order each entry individually.
Is this 4TNV86CT-PTB & variants Parts Catalog a digital download?
Immediate download of the complete 46-page searchable Parts Catalog. Access it on any device, from a laptop at your desk to a phone in the field.
Is this 4TNV86CT-PTB & variants Parts Catalog printable?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
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