Yuchai Machinery YC6M220G 2008 Parts Catalog – 75 Pages

Description

If you’re ordering parts for a Yuchai YC6M220G and the aftermarket catalog shows a piston ring for a different bore size, you know the feeling. That’s why you need the factory document. Right now I’m talking about the Yuchai Machinery YC6M220G 2008 Parts Catalog – 75 pages of OEM part numbers and exploded views straight from Guangxi Yuchai Machinery Co., Ltd. No third-party guessing. No blurred scans. This is the same booklet the dealer pulls off the shelf.

Cylinder Block & Cylinder Head Assembly

The catalog opens with the engine suspension assembly (M3020-1001000) and then jumps straight into the cylinder block – item M3015-1002000. You get the block itself, liners, main bearing caps, and every bolt with its part number. Then the cylinder head assembly (M3001-1003000) shows the head gasket, valves, springs, and rocker arm components. Each part is drawn in a clean line diagram with a reference number that ties back to the parts list. Need the intake valve? It’s on that drawing with its own part number. No cross-referencing a generic website.

What Does This Parts Catalog Include?

It lists every major assembly for the YC6M220G (M3020) diesel engine. You get the piston and connecting rod group (M3000-1004000), crankshaft vibration damper (M3001-1005000), camshaft (M3400-1006000), and valve train (M3000-1007000). Then it moves to the intake and exhaust manifolds, oil sump, oil pump, oil filter, oil cooler, dipstick, fuel supply system, fuel filter, air cleaner, and injection pump. That’s the full rotating and stationary hardware. The last page covers the injection pump and governor linkage. Each drawing shows the orientation so you don’t bolt something on backwards.

75 Pages of Factory-Original Diagrams

Unusual for a parts catalog of this era, this one prints both Chinese and English labels. Each page is a single assembly drawing with a parts table below. The table gives you the item number, part number, name, quantity per engine, and any remark. For example, the fuel filter assembly (M3001-1105000) shows the filter head, cartridge, drain valve, and mounting bracket. You get the exact part numbers Yuchai stamped on the box. That means you can order the correct part the first time from a dealer. No returns, no waiting.

Compare the Aftermarket to This OEM Print

I’ve seen aftermarket parts catalogs that list a generic “piston ring set” for a YC6M220G. That set might fit a different Yuchai model. But this OEM catalog shows the specific ring set part number for the M3020 engine. If you’re rebuilding one of these, you cannot afford to guess the ring width or oil ring tension. The OEM diagram also shows the orientation of the ring end gaps. Aftermarket books never include that detail. Stick with the factory source. For a different Yuchai engine, check out the Guangxi Yuchai Machinery YC6J245-30 Parts Catalog – 74 Pages of Factory Specs. Or if you need the smaller YC4D series, the Guangxi Yuchai Machinery YC4D80-T10 2009 Parts Catalog – OEM Diesel Engine Parts covers that. For older equipment, the Massey-Harris-Ferguson FF 30 GS 1957 Parts Catalog | OEM Fastener Guide is a different animal but same level of factory detail.

Fuel Supply System: Parts Breakdown in the Catalog

Item 16 in the contents is the supply system assembly (M3053-1104000). This drawing covers the fuel lines from tank to injection pump, including the hand primer pump, fuel return line, and banjo bolts. Every clamp and grommet gets a part number. If you’re chasing a fuel leak and you can’t find the correct sealing washer in a generic set, this page will save you a headache. The catalog also includes the injection pump assembly (item 19, M3001-1111000) with all its internal parts – plunger, delivery valve, tappet, and governor components. That’s detailed enough for a full pump rebuild if you have the manual.

For background on how these engines operate, you can read this Wikipedia article on diesel engines. For deeper understanding of the four-stroke cycle, see this Wikipedia article on diesel engines.

Frequently Asked Questions

Does this catalog include torque specifications for the cylinder head bolts?

No, this is a parts catalog, not a service manual. It shows part numbers and exploded views. You need the Yuchai YC6M220G service manual for torque specs.

How do I cross-reference the part numbers in this catalog with current Yuchai production?

Yuchai updated some part numbers after 2008. The catalog includes a note saying Yuchai reserves the right to modify without notice. If you have an engine built after 2008, compare the part number on your existing part to the catalog. If they match, the catalog number is correct. If not, contact a Yuchai dealer with the engine serial number. Many of the core engine part numbers (cylinder block, main bearing set, piston rings) remained the same through the 2010s, but accessory items like filters and gaskets may have supersessions. The catalog gives you the base number so you can ask for supersessions.

This is the exact tool you need if you’re tearing down a YC6M220G and want to order parts without sending a sample to a parts house. That kind of certainty comes from 75 pages of OEM drawings and part numbers printed in 2008. Access the Factory Manual now and stop wasting time on parts that don’t fit.