Description

Guangxi Yuchai Machinery YC4D80-T10 2009 Parts Catalog

You need the right part number, not a guess. Every time I see a DIYer order a cylinder head gasket by engine family and get the wrong thickness, I think about the hours wasted. This Guangxi Yuchai Machinery YC4D80-T10 2009 Parts Catalog is the factory-issued 76-page document that lists every production part for this diesel engine. No aftermarket interpretation. No translation errors. Just the exploded views and part numbers that rolled off the Yuchai line in June 2009.

What Is Inside This 76-Page Document?

This catalog breaks down the YC4D80-T10 into major assemblies. You get a table of contents starting on page 3 that lists each component group by part number and name. The first assembly is Engine Suspension Assembly (D7019-1001000/04), then Cylinder Block Assembly (D30-1002010A/04), Gear Housing Parts (D30-1002030A/08), Cylinder Head Assembly (D30-1003000B/08), and Piston & Connecting Rod Assembly (D30-1004000/04). Every part in those groups has a unique factory number. You don’t have to call the dealer and describe what you see—you just hand them the number.

The catalog covers the whole engine: crankshaft vibration damper, camshaft, valve tappets, intake and exhaust pipes, oil pan, oil pump, oil cooler, dipstick, fuel supply system, fuel filter, air filter, and more. Each assembly has its own page with an exploded-view drawing. The part number, name, and quantity per engine are listed right on the drawing. That is how you avoid buying a water pump that doesn’t fit because the bolt pattern changed in 2008.

Cylinder Block and Gear Housing: Page 3

Page 3 shows the Cylinder Block Assembly and Gear Housing Parts with their sub-components. The block assembly number D30-1002010A/04 includes the block, main bearing caps, rear oil seal retainer, and dowel pins. If you are rebuilding a YC4D80-T10, you need the exact part numbers for those dowel pins—they locate the gear housing. A generic pin from a bin might be 0.1 mm off, and then your timing gear alignment goes to hell. This catalog keeps that from happening.

Piston & Connecting Rod Assembly Details

The piston and connecting rod section lists the piston, rings, wrist pin, connecting rod, rod bearings, and bolts. Overbore sizes? Yes, if the engine was produced with options, they appear in the parts list. The catalog tells you which oversize pistons (0.50 mm, 1.00 mm, etc.) were originally available from the factory. Do not trust a parts store listing that says “fits YC4D80”. Trust the factory print dated 2009.

Why an OEM Parts Catalog Beats Aftermarket Lists

Aftermarket catalogs often combine multiple model years, obscure supersessions, or drop older part numbers. This Parts Catalog specifically covers the YC4D80-T10 (D7019) as built in 2009. Yuchai reserves the right to change parts without notice, but this document is the snapshot of what left the factory that year. If you need a fuel injection pipe for a D7019 engine, you see the assembly number D7019-1104000/12 and the individual pipe part numbers. No second-guessing.

For other Yuchai engines, check out the Parts Catalogue YC6J245-30 (J61LA) Diesel Engine”>. For older equipment, the Massey-Harris-Ferguson FF 30 GS Parts Catalog 1957″> is a completely different beast but equally thorough. Industrial engines often share parts; the Futura Wear Technology Parts Catalog”> covers wear components for many makes.

3 Common Mistakes When Ordering Parts

Mistake 1: Ordering “engine gasket set” from a generic supplier. You get six different head gaskets and none match the fire ring on your YC4D80-T10. Use the catalog to find the specific head gasket part number under Cylinder Head Assembly. Mistake 2: Assuming the oil pump is identical across D30 builds. The D30-1011000A/07 assembly has a specific rotor set. Put in a different one and oil pressure drops. Mistake 3: Forgetting that the 2009 model has a specific air filter assembly D7019-1109000/06. Later models use a different filter element. The catalog saves you from buying the wrong one.

How the Manual Is Organized: Assembly Numbers and Page References

Each assembly has a four-part number (e.g., D7019-1001000/04) and a page reference. The catalog is structured sequentially from engine suspension to air filter and beyond. Bilingual—Chinese on left, English on right. Every part name in English is clear enough for any North American mechanic. You don’t need to read Chinese to get the part numbers. Drawings are line art with callouts matching the parts list. No photos, but that’s fine—a good drawing shows you the relationship between parts better than a photo of a greasy engine.

Source Authenticity: Factory Print, Not a Copy

This is a direct reproduction of the original Guangxi Yuchai Machinery Co., Ltd. document. Page 2 carries the foreword from Yuchai, dated June 2009. The catalog includes production drawings and technical documents that were current at that time. I’ve seen aftermarket “parts manuals” that just collect part numbers from forums—this is the real thing. It’s the same binder Yuchai dealers pulled from when you called in 2009.

For background on how diesel engines are engineered, read the Internal Combustion Engine”> article. For the broader automotive industry context, Automotive Industry Overview”> gives perspective on parts standardization.

Frequently Asked Questions

Does this catalog include torque specifications?

No. This is a parts catalog, not a service manual. You’ll need a separate repair manual for assembly torque values and procedures.

Can I use this to rebuild my YC4D80-T10 engine?

You can use it to identify every part number you need for a rebuild. Each assembly is broken down to the last bolt and seal. But for the step-by-step rebuild procedure—clearances, torque sequences, timing marks—you need the factory service manual. This catalog gets you the correct parts; the service manual tells you how to install them.

Is the catalog in English?

Yes, bilingual. Each part name appears in Chinese and English. The drawings and numbers are universal.

What if I need a part that’s not listed?

This catalog covers all original production parts for the YC4D80-T10 as of June 2009. If you need a superseded part or an updated design, you may need to contact Yuchai directly. However, this is the definitive reference for the original part numbers. Any deviation should be verified against later technical bulletins.

You’ve got an engine to fix or maintain. Stop wasting time cross-referencing part numbers from memory. Get the factory data that matches your 2009 YC4D80-T10. Access the Factory Manual now and keep a copy on your shop tablet. When you need a part number, you’ll have it in seconds—no guesswork, no returns, no excuses.