Description

Yanmar L100N5-GETM3 2009 Parts Catalog – Factory Specs for the L100N5-GETM3

Ever pulled a part out of a box and found it didn’t match the hole it was supposed to fill? That’s the kind of waste I see when guys grab aftermarket parts catalogs or rely on third-party cross-reference sites. You end up with a piston ring that’s 0.002” too thin or a gasket set missing the specific crush washer for the injector bleed port. Yanmar L100N5-GETM3 2009 Parts Catalog stops that nonsense cold. This is the same book Yanmar dealers used in 2009 to order parts for the L100N5-GETM3 diesel engine. 17 pages of factory part numbers, exploded diagrams, and interchangeability symbols that tell you exactly whether a revision supersedes your current piece or sends you to the scrap bin.

Dec, 2009 publication date. That matters because Yanmar made small running changes to the L100N5-GETM3 during production, and this catalog captures the engine as built from December 2009 onward. If your engine has an earlier serial number, you need a different catalog. The preface on page 1 spells out the scope: every part incorporated in the model since that date. Page 2 shows the “Directions for the Parts Catalog” format – you get reference levels, interchangeability symbols (N, R, Q, S, W, X, K, E), and effective machine numbers. Skip reading those directions and you’ll order a roller bearing that won’t fit the updated camshaft journal. I’ve seen it happen.

Cylinder Block and Head Breakdown

Group 1 covers the Cylinder block, Group 2 the Cylinder Head & Bonnet. Each figure shows an exploded view with the ref number keyed to a parts list. The Valve train components live in Group 7 (F.I.PUMP & F.I.VALVE) – that’s your injection pump and fuel injection valve, not the intake/exhaust valves. Those are in the cylinder head group. Read the list carefully; Yanmar groups things by function, not location.

17 Pages of Factory Part Listings

10 major group sections in 17 pages. Each section gives you the parts list with quantities for different product symbols (A, B, C, D, E, F, H) so you know which part goes to which variant of the L100N5-GETM3. The Camshaft and Crankshaft are in Group 4 – CRANKSHAFT, PISTON & CAMSHAFT. The Cooling device is Group 6 – COOLING DEVICE. You also get a TOOL, LABEL & GASKET SET section (Group 9) and PACKAGED PART (Group 10). No separate torque specs or service procedures; this is strictly a parts identification tool.

What About the Cooling and Valve Components?

Need the water pump or thermostat housing? Group 6 lists every cooling system part with the same reference system. For fuel system parts, Group 7 includes the F.I. pump and F.I. valve – that’s your injection pump and nozzle holder assembly. The Valve in that context means the fuel injection valve, not the poppet valve in the head. Use the interchangeability symbols to see if a newer part number supersedes the old one. Symbol R means both old and new are interchangeable both ways; Q means new works with old but old won’t fit the new build. Don’t trust your memory – check the table on page 3.

Get the Right Part Numbers with Interchangeability Symbols

If you’re rebuilding a L100N5-GETM3 and you pull part number 114980-51700 (fuel injection pump) off the shelf, but the catalog shows it’s level 1 and has a quantity of 1 for product symbol D, you need to verify the effective machine number. The catalog uses level numbers (1, 2, 3) to show sub-components. A level 2 part like the roller bearing (12270-51050) is inside the pump – order that separately if the assembly is not serviceable. The symbol N warns you the new part won’t interchange into the old assembly. Ammann Yanmar B12 B17 Parts Catalog covers a different platform – don’t cross-use those diagrams.

For another Yanmar manual with the same structure, see Yanmar YB271, B27 1994 Parts Catalog – OEM Factory Specs and Yanmar YB301 YB351 1991 Parts Catalog – 248 Pages OEM. Those follow the same layout but with different engine families.

Source Authenticity: OEM vs Aftermarket

I’ve watched techs lose an hour fighting a gasket that came in a “universal” set because the aftermarket catalog omitted the 12mm O-ring for the oil cooler bypass. This Yanmar catalog is OEM – printed from the same plates Yanmar issued to dealers. The 0CR10-G00100 document number confirms it. No third-party re-draw or guessed part numbers. When you see “(D=E00156)” in the remarks column, that’s a factory note telling you part E00156 applies to engine families 4JH-DT and 4JH-DTZ. Aftermarket catalogs drop those footnotes. Automotive Industry Overview doesn’t cover specific parts, but it reminds you why standards matter – this catalog meets the factory standard.

Factories change parts for reliability upgrades. The interchangeability symbol record tells you exactly what happened. Automotive Industry Overview provides context on why manufacturers issue revisions – but the catalog gives you the hard data.

Who Should Use This Catalog

You’re a shop owner in San Antonio or a farmer in Oklahoma who owns a L100N5-GETM3-powered piece of equipment. Maybe a contractor runs a concrete pump with this Yanmar. You need to identify the correct bearing or gasket set without dismantling the engine twice. This catalog pays for itself the first time you avoid a wrong order. Pair it with a service manual for torque values – this is not a repair manual.

That’s the bottom line. Access the Factory Manual and keep it in your tablet or print it for the tool chest. 17 pages, liquidation into your parts sourcing workflow.

Does this manual include torque specifications?

No, this is a parts catalog, not a service manual.

How do I use the interchangeability symbols?

The catalog defines nine symbols (N, R, Q, S, W, X, K, E) on page 3. For example, symbol N means the new part is interchangeable for the old part but the old part is not interchangeable for the new part. Study the “Directions for the Parts Catalog” section before ordering any level 1 assembly – you might need to order sub-components separately. Use the effective machine number to ensure your engine serial falls within the range listed in columns (A)-(F).