Got a parts sourcing problem on your Yanmar TL230 Track Loader? This 46-page Yanmar 4TNV98-ZNTBL, TL230, P-TL230EAC parts catalog lays out the complete factory parts structure for the engine and all its systems. Inside: a full set of exploded-view diagrams, each paired with a numbered parts list covering cylinder block, gear housing, flywheel housing, cylinder head, camshaft, crankshaft, fuel injection pump, governor, fuel injectors, starting motor, alternator, ECU, and gasket sets. Every diagram shows each component with its factory part number, so you can identify exactly what you're ordering before you pick up the phone. For bearing sourcing, the catalog specifies main bearing undersize at 0.25 and thrust bearing oversize at 0.25; those are the variants you need to name when placing the order. Stop guessing part numbers from memory. Bookmarked by system, so you jump straight to the right section, pull the number, and get back to work.
What's Inside This Yanmar 4TNV98-ZNTBL, TL230, P-TL230EAC Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 6-7 | Cylinder Block Assy, Camshaft Bush, Thrust Bearing Assy, Cylinder Head Gasket, Main Bearing Set Repair Part, Main Bearing Under-Sized Part, Thrust . Over-Sized Part Bearing |
| Gear Housing | 8-9 | Gear Case, Lub. Oil Pump Assy, Packing, Oil Filler Adaptor, Pipe, Filler Cover, Fuel Injection Pump Cover, Fuel Injection Pump S Cover |
| Flywheel Housing & Oil Sump | 10-11 | Flywheel Housing, Flywheel Cover Cap, Oil Seal, Oil Sump Assy |
| Cylinder Head & Bonnet | 12-13 | Engine Lifter, Valve Bridge Seat a, Cylinder Head Assy, Valve, Valve Spring, Spring Retainer, Valve Stem Seal, Valve Bridge Assy |
| Suction Manifold & Air Cleaner | 14-15 | Packing, Intake Manifold Cmp, Intake Manifold, Gasket, Air Heater, Bend, Air Cleaner Assy, Housing Bottom |
| Exhaust Manifold & Silencer | 16-17 | Exh Manifold Assy, Exhaust Manifold, Gasket, Silencer Gasket, Silencer, Silencer Stay, Pipe Cmp, EGR Pipe Gasket |
| Camshaft & Driving Gear | 18-19 | Tappet, Push Rod, Camshaft Assy, Thrust Metal, Camshaft Gear, Shaft, Idle Gear Assy, Idle Gear Repair Part Bush |
| Crankshaft & Piston | 20-21 | Crankshaft Comp, Crankshaft Gear, Crankshaft V-Pulley, Flywheel Assy, Ring Gear, Piston Assy, Piston Ring Set, Connecting Rod Assy |
| Lub.Oil System | 22-23 | Dipstick, Dipstick S, Lub. Oil Case Assy, Adapter, Cover, Spacer, Filter 80X80L, Lub.oi Bracket Assy |
| Cooling Water System | 24-25 | Water Pump Assy, Cw-P Gasket, Cooling Water Pump Pulley, V-Belt, Fan, Fan Spacer, Thermostat Case Assy, Thermometer |
| Fuel Injection Pump | 26-27 | Flange, Stopper, Delivery W Setting, Spring, Lifter, Timer Set, Timer Cmp, Backup Ring |
| Governor | 28-30 | Case Packing, Sensor, Sensor Gear, Round Gasket |
| Fuel Injection Valve | 31 | Fuel Injector, Nozzle Assy, Nozzle Holder Assy, Nozzle Spring, Nozzle Spring Seat, Stop Plate, Pipe Seal, Bracket |
| Fuel Line | 32-33 | Fuel Filter Z Bracket, Fuel Oil Z Filter, Fuel Z Pipe Assy, Fuel Pipe Z Protector, Fuel Oil Z Pipe, Tube Z, F.o.return Pipe Assy, Fuel Return Packing |
| Starting Motor | 34-35 | 3KW Starter 12V, Armature Assy, Field Coil Assy, Brush, Rear Cover, Brush Holder, Brush Spring, Magnetic Switch Assy |
| Generator | 36-37 | Alternator, Rotor Assy, Bearing Cover, Drive Flame Assy, Plate, Rear Flame Assy, Pulley, Collar |
| Electronic Control Unit (ECU) | 38-39 | ECU Shield, Controller Collar, Cushion Rubber, Collar |
| Gasket Set | 40-41 | Cylinder Head Gasket, Packing, Valve Stem Seal, Nozzle Protector, Nozzle Seat, Bonnet Gasket, Gasket, Silencer Gasket |
| Loose Part | 42-46 | Type C Relay Ca, Accel Sensor Assy, Return Spring, Body, Support, Shaft Asy, Accel Sensor Lever, Power Relay |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main Bearing Undersize | 0.25 | p. 7 |
| Thrust Bearing Oversize | 0.25 | p. 7 |
| Bolt M10x35 Plated Quantity (Flywheel Housing) | 9 | p. 11 |
| Cotter Assy Quantity | 16 | p. 13 |
| Piston Assy Quantity | 4 | p. 21 |
| Pin Bearing Undersize | 0.25 | p. 21 |
| V-Belt Quantity | 1 | p. 25 |
| Fuel Injector Quantity | 4 | p. 31 |
| Brush (+) Quantity (Starting Motor) | 2 | p. 35 |
| Screw 5.0x8 Quantity (ECU) | 6 | p. 39 |
| Valve Stem Seal (EXH) Quantity | 8 | p. 41 |
| Fuel Return Packing Quantity | 5 | p. 41 |
Yanmar 4TNV98-ZNTBL, TL230, P-TL230EAC Common Problems This Manual Covers
Yanmar TL230 track loader coolant loss — need water pump and thermostat part numbers p. 24
Check the Cooling Water System exploded view starting on page 24. The pump assembly, thermostat, V-belt (1 belt per engine), fan, and all hose connections are itemized there. Cross-reference the parts list on page 25 for exact part numbers before ordering. Verify your serial number range applies to all cooling components before submitting the order.
Manual Section: Cooling Water SystemFuel filter and separator part numbers needed, cold-start complaints after recent filter swap p. 32
Pull the Fuel Line diagram on page 32. The fuel filter, fuel pump, and separator assembly are all listed with individual part numbers. The engine runs 4 injectors (page 31) — if you're chasing a hard-start complaint after a filter job, also verify the fuel injector part numbers match your serial range. Order the complete separator assembly, not just the element, if the housing shows cracks or seal wear.
Manual Section: Fuel LineHead gasket and valve stem seals part numbers for cylinder head rebuild on 4TNV98 engine p. 40
Open the Gasket Set section on page 40. The complete gasket kit, O-rings, and packing are listed there. The exhaust valve stem seals count 8 per engine (page 41) — confirm that quantity before ordering to avoid a second parts run. For cylinder head components including valves, rocker arms, and the head gasket itself, cross-reference the Cylinder Head and Bonnet diagram starting on page 12.
Manual Section: Gasket SetGlow plug and air filter element part numbers for scheduled maintenance kit p. 14
Locate air filter element part numbers in the Suction Manifold and Air Cleaner section on page 14, where the intake manifold, air cleaner housing, and filter element are all itemized. Glow plugs (heater/air heater listed same section) are also diagrammed there. Pull both exploded views and verify quantities match your engine serial number range before building a maintenance kit order.
Manual Section: Suction Manifold & Air CleanerECU replacement part number needed — distributor flagged wrong unit installed on engine p. 38
Find the ECU component part number in the Electronic Control Unit section on page 38. The ECU assembly, shield, collars, rubber cushions, and mounting screws (6 screws per unit, page 39) are all listed. Note that installing a replacement ECU requires proper information loading by an authorized distributor to prevent engine operation failure — confirm the correct part number against your serial number before ordering, as an incorrect ECU will require additional service labor on top of the part cost.
Manual Section: Electronic Control Unit (ECU)Wiring harness and starter motor brush part numbers after electrical fault on track loader p. 34
Check the Starting Motor diagram on page 34 for the full starter assembly breakdown, including the magnetic switch, pinion, armature, and field coil. Each starter carries 2 positive brushes (page 35) — if the brush set is worn, order by part number from the diagram rather than by generic spec. For wiring harness and relay part numbers related to broader electrical faults, check the Loose Part index on page 44, which covers relays, sensors, and harness components.
Manual Section: Starting MotorFrequently Asked Questions
How to reset error codes on Yanmar 4TNV98-ZNTBL?
The manual indicates that the Electronic Control Unit (ECU), part number Y129939-75110, cannot be ordered as a standard part. Any ECU-related service, including potential resetting of error codes, requires replacement with a "SERVICE ECU" by an authorized distributor to ensure proper engine information is installed.
How to reset the engine control unit after replacing sensors on 4TNV98-ZNTBL?
The manual states that the Electronic Control Unit (ECU), part number Y129939-75110, cannot be ordered as a standard part. If the ECU needs to be reset or reprogrammed after replacing sensors, it must be done using a "SERVICE ECU" by an authorized distributor to install the proper engine information.
How do you fix yanmar TL230 track loader coolant loss — need water pump and thermostat part numbers?
Check the Cooling Water System exploded view starting on page 24. The pump assembly, thermostat, V-belt (1 belt per engine), fan, and all hose connections are itemized there. Cross-reference the parts list on page 25 for exact part numbers before ordering. Verify your serial number range applies to all cooling components before submitting the order.
How do you fix fuel filter and separator part numbers needed, cold-start complaints after recent filter swap?
Pull the Fuel Line diagram on page 32. The fuel filter, fuel pump, and separator assembly are all listed with individual part numbers. The engine runs 4 injectors (page 31) — if you're chasing a hard-start complaint after a filter job, also verify the fuel injector part numbers match your serial range. Order the complete separator assembly, not just the element, if the housing shows cracks or seal wear.
What do I get after purchasing this Yanmar 4TNV98-ZNTBL, TL230, P-TL230EAC?
A 46-page Parts Catalog in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Can I print this manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Document Quality
This document is a scanned PDF with an OCR layer, so you can search and copy the full text. The text is crisp and clear throughout, making it easy to read. Diagrams and illustrations are raster images, but their labels are generally readable. Pages are clean with no noticeable scan artifacts or skewed content. There is one blank "Memo" page included.
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