Description

Hitachi Sumitomo OM460LA Parts Catalog

If you are ordering parts for a Hitachi Sumitomo OM460LA diesel engine without a factory parts catalog, you are throwing money at guesses. I have seen guys bolt on the wrong piston because they used a generic cross-reference. This 62-page Parts Catalog solves that. It is the OEM exploded-view guide for the OM460LA engine used in the ZW310 wheel loader. Every part number, every diagram, every note about assembly order is in here.

Hitachi Sumitomo OM460LA Parts Catalog: What Each Section Covers

The manual is split by system. ENGINE BODY includes the crankshaft, flywheel, piston and connecting rod, timing case, and P.T.O. You get separate blow-ups for the crankcase and oil pan. HEAD & VALVE MECHANISM covers the cylinder head and camshaft. Inlet and exhaust systems include intake manifold, exhaust manifold, and turbo charger. Lubrication system has oil piping, oil pump, and oil filter/cooler. Cooling system focuses on the water pump. Fuel system covers injection pump, fuel pump, fuel piping, and fuel filter/separator. Electrical parts include alternator and starter fitting and inner parts. All 62 pages are dedicated to telling you exactly which bolt, seal, or gasket you need.

Why Use an OEM Parts Catalog?

Aftermarket parts catalogs often renumber parts or skip sub-sections. That costs you time when the seal you ordered is the wrong diameter. This catalog came from Hitachi Sumitomo’s own engineering. The part numbers match what the factory stamped on the blocks. The abbreviations (ASSY, STD, OP) are consistent with the Japanese originals. If you are used to aftermarket cross-references, switch. You will stop wasting money on returns. The Automotive Industry Overview backs up the importance of using original manufacturer specs to avoid errors.

62 Pages of Exploded Diagrams and Part Numbers

Each page has a detailed illustration with callouts. The part number list below each diagram gives the part number, description, and quantity per assembly. There are notes like ♯ (not sold separately) and ＊ (sold as set or kit). The engine serial number range is listed on the cover. The manual is bilingual (English and Japanese). If you need to order a replacement for the camshaft or cylinder head, you find the FIG. number from the Contents, then locate the diagram. The Parts Number Index on the last page lets you look up a part number directly.

Cooling System and Fuel System Details

The cooling system section (WATER PUMP) shows the pump assembly and all seals. The fuel system includes the injection pump, fuel pump, piping, and filter/separator. If you are rebuilding the fuel system on an OM460LA, you need to see the routing of the fuel piping. This catalog shows the exact tube lengths and fitting orientations. The cylinder head section includes valve parts. Do not guess on valve guide part numbers; use the exploded view.

Engine Body: Crankshaft, Piston, and Timing Case

The ENGINE BODY section is the largest. It covers the crankshaft and flywheel, piston and connecting rod, timing case, and P.T.O. The crankcase and oil pan are separate illustrations. If you are replacing the engine kit (gaskets, seals), the ‘ENGINE KIT’ page lists every gasket you need. The P.T.O. section shows the power take-off assembly. This is not a repair manual; it is a parts identification tool. But without it, you cannot order the correct crankshaft bearings.

FAQ

Does this catalog include torque specifications?

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

How do I use the catalog to find a part number for my specific engine?

First, locate your engine serial number (on the cylinder block nameplate). The catalog covers OM460LA engines with serial number from 4HF: 000101 and 4HA: 005101. Use the Contents to find the relevant system section. Each section has a FIG. number. Find that figure in the catalog; the illustration shows the assembly with callouts. The parts list below gives the part number. If you already have a part number, go to the Parts Number Index at the end. The index lists all part numbers in alphabetical/numerical order with the page number. That lets you quickly verify if the part you need is listed.

Access the Factory Manual from AutoRepairManuals and keep it on your bench. When a pump fails on a Friday afternoon, you will not guess the seal part number. You will flip to the fuel system pages and order exactly what Hitachi Sumitomo specified.

If you work on other Hitachi Sumitomo equipment, these related catalogs help: Hitachi Sumitomo ZAXIS850-3 Series Parts Catalog – 451 Pages for the ZAXIS850-3, Hitachi Sumitomo ZAXIS 600-650LCH Parts Catalog – 162 Pages for the 600-650LCH, and Hitachi Sumitomo ZX500LC ZX500LCH Parts Catalog – 150 Pages OEM for the ZX500 series.