Description

Nissan Diesel BD3004 1996 Parts Catalog

If you are pulling a Nissan Diesel BD3004 engine apart and need to know which piston ring goes where or what part number that fuel injection nozzle carries, you do not want a third-party parts list. You want the factory book. This is the genuine OEM Nissan Diesel BD3004 1996 Parts Catalog – 111 pages of exploded-view drawings and exact part numbers. I have seen too many guys order the wrong crankshaft bearing because they trusted an aftermarket cross-reference. That mistake costs you a week of downtime and a return shipping fee. This catalog eliminates that.

111 Pages of Factory Exploded Diagrams

Every page in this catalog was printed by Nissan Diesel in 1996. The table of contents breaks down into sections: Block, Oil Pan, Front Cover, Flywheel Housing; then Head, Piston, Crankshaft, Pulley, Flywheel, Valve Mechanism; Manifold, Air Compressor, Oil Pump, Fuel Filter, Air Cleaner; Fuel System; Cooling System; Electronic Parts, Power Conduction; Accessory, Tool; and a full Parts Index at the back. Page 37 shows the piston and crankshaft assembly with a clear figure number E120A and variant codes (A1, B1) so you can match your specific engine application. No vague silhouettes – these are dimensional drawings with callouts tied to the parts list.

Does This Parts Catalog Cover the Fuel System?

Yes, and in detail. The Fuel System section includes piping, nozzle and holder (inner parts), fuel injection pump (fitting parts and inner parts), governor, feed pump, and coupling. If you need the part number for the delivery valve holder or the governor spring, it is in here. Unlike generic diesel fuel system diagrams, these drawings are specific to the BD3004 with its inline pump layout. Refer to the “SPECIFICATION CONMINATION TABLE” (sic) on page 35 to confirm your engine’s fuel system variant before ordering.

Cylinder, Crankshaft, Valve – Exact Part Numbers

The “HEAD, PISTON, CRANKSHAFT, PULLEY, FLYWHEEL, VALVE MECHANISM” section covers the cylinder head, piston and crankshaft assembly, crank pulley and flywheel, and valve mechanism. Need a new valve guide? The book gives you the part number right next to the illustration. Crankshaft main bearing inserts are listed with size grades. This is the kind of detail that keeps an overhaul from turning into a parts-chasing nightmare. The manual applies to BD3004 engine numbers E/#013223 and later (including Hitachi construction machinery from E/#000001).

Why an OEM Parts Catalog Beats Aftermarket Lookup Tables

Aftermarket software often lumps parts across multiple engine families, then you get a “compatible” part that fits but the dimensions are off by 0.5 mm. This catalog was created by Nissan Diesel for the BD3004 industrial engine only. The exploded diagrams show how each component fits relative to the others – you see the bolt lengths, the seal orientation, the exact number of washers. For a professional or serious DIY mechanic, that visual reference is worth the price alone. Also, the catalog includes the “APPLICABLE MODEL TABLE” and “SPECIFICATION CONMINATION TABLE” that let you narrow down parts based on your engine’s application (standard construction, generator set, etc.). If you have ever tried to order parts for a BD3004 used in a Hitachi excavator vs. a Komatsu generator, you appreciate this.

Using the Applicable Model and Specification Combination Tables

Do not skip the front matter. The “機種一覧表” (Model List) on page 33 assigns an APP.NO. to each configuration. Then the “仕様組合せ一覧表” (Specification Combination Table) on page 35 maps that APP.NO. to section codes like E120A. That tells you exactly which illustration applies to your engine. For example, APP.NO. 01 is the basic engine, 02 is standard construction machinery, 03 is generator set (4-pole), etc. You look up your engine number stamped on the cylinder block, find the correct APP.NO., then go to the right figure page. This system is logical but you must read the instructions (pages 6–15 in the catalog) to use it correctly. I have seen guys ignore these tables and order the wrong oil pan because they assumed all BD3004 pans are the same. They are not.

For related engine family parts, you might also consider the Nissan Diesel TD27 2006 Parts Catalog – OEM Genuine if you are working on a TD27. For a larger industrial diesel, the NISSAN DIESEL PE6 PE6T 1989 Service Manual covers the PE6 inline six. And if you are into older farm equipment, the Massey-Harris-Ferguson FF 30 GS 1957 Parts Catalog | OEM Fastener Guide shows how OEM catalogs used to be done.

Understanding the fundamentals of diesel engine architecture can help you interpret parts diagrams more effectively – read this Wikipedia article on diesel engines for an overview. For deeper technical background, this Wikipedia article on diesel engines covers injection systems and combustion cycles.

Can I use this catalog to look up torque specifications for the cylinder head?

No. This is a parts catalog, not a service manual. It lists part numbers and shows assembly order but does not provide torque values or clearance specs. You need the factory service manual for that information.

What if my BD3004 engine number is earlier than the range listed in the catalog?

The catalog covers BD3004 engines from E/#013223 onward (Hitachi: E/#000001). Earlier engines may have different part numbers for the cylinder head gasket, oil pan, or crankshaft. Contact Nissan Diesel with your full engine number to confirm compatibility before ordering parts based on this catalog alone.

Do not rely on memory or cross-reference apps for your next BD3004 rebuild. Access the Factory Manual and keep it on your workbench. You will have every part number, every exploded view, and every application code right where you need it.