Finding the exact replacement part for your 3TN75L-RB the first time is what these 43 pages are built to do. Every major system carries its own exploded-view diagram and numbered parts list: cylinder block, gear housing, crankshaft and flywheel, piston and connecting rod, fuel injection pump, governor, starting motor, generator, and the full gasket set. Undersized and oversized callouts cover bearings and pistons, and OEM numbers run from a Parallel Pin 8X16 to the fuel injection nozzle holder assembly. Dimensions are spelled out where they matter: M22 drain plug, 7x14 mm camshaft key, 0.25 mm main bearing undersize. No more chasing part numbers across three browser tabs. Bookmarked by system and searchable by keyword, so you download it, find your part, and call in the right number.
What's Inside This Yanmar 3TN75L-RB Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Engine Section | 1-2 | Cylinder Block Assy, Main Bearing, Thrust Bearing, Camshaft Bush, Cylinder Head Gasket, Joint PT1 |
| Cylinder Block | 3-4 | Gear Housing Assy, Oil Seal, Lub. Oil Supply Cap, Gears Housing Flange, Hydraulic Oil Pump Cover, Hydraulic Oil Pump Gasket, Gasket, Knock Pipe |
| Gear Housing | 5-6 | Flywheel Housing, Flywheel Cover Cap, Oil Seal Case Assy, Oil Seal, Oil Seal Case Gasket |
| Lub.Oil Sump | 9-10 | Head Bonnet Assy, Breather Cover Assy, Shelter Plate, Breather Baffle, Lub. Oil Supply Cap, Bonnet Gasket, Pipe, Breather Pipe |
| Bonnet | 11-12 | Cylinder Head Assy, Valve Guide, Suction Valve, Exhaust Valve, Valve Spring, Spring Retainer, Valve Stem Seal, Valve Cap |
| Cylinder Head | 13-14 | Suction Manifold, Suction Manifold Gasket, Gasket, Exhaust Manifold, Exhaust Manifold Gasket, Air Heater, Air Heater Gasket |
| Suction & Exhaust Manifold | 15-16 | Tappet, Push Rod, Camshaft Assy, Thrust Bearing, Camshaft Gear, Idle Gear Shaft, Gear W/ Bush, Idle Gear Bush |
| Camshaft & Driving Gear | 17-18 | Crankshaft Assy, Crankshaft Gear, Crankshaft V-Pulley, Flywheel W/ Gear, Ring Gear |
| Crankshaft & Flywheel | 19-20 | Piston Assy, Ring Set, Piston W/ Ring, Connecting Rod Assy, Crankpin Bearing, Piston Pin Bush |
| Piston & Connecting Rod | 21-22 | Lub. Oil Pump Assy, Lub. Oil Pump Gasket, Lub. Oil Dipstick, Dipstick Guide, Oil Strainer Gasket, Gasket, Oil Inlet Pipe Assy, Strainer Bracket |
| Lub.Oil System | 23-24 | Cooling Water Pump Assy, Cooling Water Pump Gasket, V-Belt, V-Pulley, Cooling Fan, Thermo Switch, Gasket, Thermostat Cover |
| Cooling Water System | 25-27 | Pump W/ Governor & Feed Pump, Camshaft, Thrust Ball Bearing, Cam Shaft Support, Plunger W/ Barrel, Retainer a, Plunger Spring Shoe, Plunger Spring |
| Fuel Injection Pump | 28-29 | Fuel Injection Valve Assy, Fuel Injection Nozzle Assy, Nozzle Holder Assy, Nozzle Spring, Nozzle Spring Seat, Stop Plate, Injection Pipe Retainer, Fuel Injection Pipe |
| Fuel Injection Pipe | 30-31 | Fuel Strainer Assy, Taper Valve, Taper Valve Spring, Lever, Strainer Cup, Retaining Ring, Spring, Element |
| Fuel Pipe | 32-33 | Fuel Return Pipe, Joint, Cap, Bend Assy, Check Valve Assy, Round Gasket |
| Fuel Return Pipe | 34-35 | Governor Case, Governor Case Gasket, Governor Case Cover, Case Cover Gasket, Link, Governor Weight Assy, Sleeve, Control Shaft Assy |
| Governor | 36-37 | Starter, Armature Assy, Field Coil Assy, Brush, Rear Cover, Brush Holder Assy, Brush Spring, Clutch Assy |
| Starting Motor | 38-39 | Generator, Plate Assy, Stator, Coupler, Flywheel Assy, Collar, Adjuster |
| Generator | 40-41 | Gasket Set, Cylinder Head Gasket, Hydraulic Oil Pump Gasket, Oil Seal Case Gasket, Bonnet Gasket, Suction Manifold Gasket, Exhaust Manifold Gasket, Lub. Oil Pump Gasket |
| Gasket Set & Tool | 42-43 | Optional, Part Number 977770-01212 |
Every system also includes a diagram.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main Bearing Undersize | 0.25 | p. 2 |
| Parallel Pin Dimensions | 8x16 mm | p. 6 |
| Drain Plug Thread Size | M22 | p. 8 |
| Spring Pin Dimensions | 6x12 mm | p. 12 |
| Camshaft Key Dimensions | 7x14 mm | p. 16 |
| Piston Ring Oversize | 0.25 | p. 20 |
| Fuel Filter Dimensions | 90x80 mm | p. 22 |
Yanmar 3TN75L-RB Common Problems This Manual Covers
Yanmar 3TN75L-RB oil filter part number unclear, multiple listings in catalog p. 23
Turn to the Lub.Oil System exploded view starting on page 23. The filter listed is 90x80 mm (part number 129150-35150 on page 22). Cross-reference the parts list to confirm this filter fits your serial number range before ordering.
Manual Section: Lub.Oil SystemFuel injection nozzle assembly part number needed, components sold separately or as kit p. 28
Check the Fuel Injection Pump exploded diagram on page 28. The nozzle assembly lists sub-components individually: nozzle case, holder assembly, nozzle spring, stop pin, and shim pack. Identify whether you need the full Nozzle Assy or a single sub-component, then pull the part number from the diagram callouts before ordering.
Manual Section: Fuel Injection PumpPlunger part number for fuel injection pump hard to locate in parts list p. 28
Open the Fuel Injection Pump section on page 28. The plunger is listed within the F.Inject group alongside the diaphragm, cover, gasket, and priming lever components shown on pages 25-27. Match the callout number in the exploded view to the parts list column to get the correct part number for your serial range.
Manual Section: Fuel Injection PumpValve seat part number needed after white smoke diagnosis, unsure which component to order p. 13
Go to the Cylinder Head section on page 13. The valve seat is listed under the head assembly components. The catalog separates intake and exhaust valve seats, so confirm which side needs replacement before pulling the part number. Cross-check with the Suction and Exhaust Manifold parts on page 15 if the manifold gasket also needs replacing.
Manual Section: Cylinder HeadCrankshaft main bearing part number needed, undersized options not clearly labeled p. 3
Find the Cylinder Block parts list on pages 3-4. Undersized and oversized bearing parts are listed separately in dedicated rows. The main bearing undersize option is 0.25 mm. Locate the undersized parts group on page 3 and match the callout to the correct part number column before ordering.
Manual Section: Cylinder BlockFull gasket set part number for engine overhaul, unsure if kit covers all systems p. 42
Reference the Gasket Set and Tool section on page 42. The complete gasket kit is listed as a single assembly (Gasket Set, part number 977770-01212 on page 43) and includes cylinder head, hydraulic oil pump O-ring, oil seal case O-ring, suction manifold gasket, and exhaust manifold gasket. Verify the kit covers all systems you are rebuilding before ordering individual gaskets separately.
Manual Section: Gasket Set & ToolFrequently Asked Questions
What are the replacement specifications for Oil filter?
The oil filter carries part number 129150-35150, listed as "FILTER 90X80L". You will find it in the Lub.Oil System section.
What are the replacement specifications for Fuel injection nozzle?
Fuel injection nozzle assembly is part number 119810-53000, listed as "NOZZLE ASSY,F.INJECT", with 3 units per engine. The matching fuel injection valve assembly is part number 719810-53100 or 719810-59100.
How do you fix 3TN75L-RB oil filter part number unclear, multiple listings in catalog?
Open the Lub.Oil System exploded view that begins on page 23. The filter shown measures 90x80 mm (part number 129150-35150 on page 22). Before ordering, cross-check the parts list against your serial number range.
How do you fix fuel injection nozzle assembly part number needed, components sold separately or as kit?
Look at the Fuel Injection Pump exploded diagram on page 28. Sub-components are listed one by one: nozzle case, holder assembly, nozzle spring, stop pin, and shim pack. Decide whether you need the full Nozzle Assy or a single piece, then read the part number from the diagram callouts.
How quickly can I access this 3TN75L-RB manual after buying?
Download is immediate. The full 43-page searchable Parts Catalog opens on any device, from the laptop at your desk to a phone out in the field.
Is this 3TN75L-RB Parts Catalog printable?
Yes. Print as many copies as you like, with no restrictions. Plenty of mechanics print just the section they need and carry it to the shop floor.
Document Quality
This PDF is a mixed document, featuring both OCR-processed text pages and high-resolution scanned image pages. You can search and copy text from the OCR pages, while the image pages are not text-searchable. All text, including diagram labels, is crisp and easy to read. Diagrams and illustrations are clear raster images, with all labels perfectly legible. 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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