Description

Hitachi Sumitomo 450LC-3, 470LCH-3 2007 Parts Catalog

I’ve been turning wrenches on heavy equipment for 28 years. Nothing burns shop time like ordering the wrong boom cylinder seal kit because you trusted a third-party parts list. This Hitachi Sumitomo 450LC-3, 470LCH-3 2007 Parts Catalog is the exact OEM document our shop uses when we need to identify a part before we tear into a machine. 98 pages, factory diagrams, and real part numbers – not some photocopy that skips the counterweight support bracket.

Parts Catalog Content: 98 Pages of Factory Specs

This manual splits into two sections: the Operator’s Manual (covering precautions, transport dimensions, and maintenance) and the Parts Catalog proper. The parts section starts with the frame cover and works through every major assembly. You get the counterweight (11.6t), boom (11.5m), arm (8.5m), bucket (0.8m3 JIS 94), control valve, cylinders with wiper seal callouts, and the main piping diagrams. The parts index at the back lets you cross-reference a number without flipping through every page. Page 1 covers the basic precautions – read it before you lift anything.

Boom, Arm, and Cylinder Breakdown

The boom and arm assemblies are drawn out with each bracket, pin, and seal identified. The manual lists both right and left boom cylinders separately, and the buckets get their own exploded view. If you’re rebuilding the super long front attachment (Type 20), you need the exact part numbers for the link A and link B assemblies. Generic catalogs often merge these into one – this OEM catalog keeps them separate. The cylinder sections specify wiper seal type, which matters when you’re replacing seals in a high-wear environment.

Lubrication piping gets its own pages, including the auto-lube circuits for both boom and arm. Missing a grease fitting on the auto-lube line means premature pin wear. The diagrams show you exactly where each line routes. No guesswork.

Counterweight and Main Piping Details

The counterweight section calls out the 11.6t unit and its support bracket. If you’re swapping counterweights between a 450LC-3 and a 470LCH-3, the support brackets differ. The main piping diagrams (noted as 3-2 in the TOC) show the hydraulic line routing for both models. One wrong tube bend and you’ll rub a hole in a hose within 50 hours. This catalog gives you the part numbers for the hard lines and O-rings.

Lifting Capacities and Working Ranges – Why You Need Them

Page 12 lists the lifting capacities for backhoe configuration. If you’re rigging a lift on site, the operator needs those numbers. The working ranges diagram shows you the maximum reach and dig depth for the 11.5m boom. Exceeding those limits can tip the machine. The manual also includes the transport dimensions – you’ll need those when loading the excavator on a lowboy. Overwidth loads get you ticketed. Don’t trust a tape measure; use the factory specs.

Why OEM Documentation Matters More Than Aftermarket

Aftermarket parts catalogs often copy the drawings but use their own part number schemes. Then you order a replacement counterweight bolt and get the wrong thread pitch. This manual is the original Hitachi Sumitomo print. The part numbers in it are what the dealer uses. If you’re working on a serial number 020001 and up (2007+), this is the correct catalog. We keep a printed copy in our shop’s reference library next to the HITACHI ZAXIS 450-3 500LC-3 Workshop Manual”>HITACHI ZAXIS 450-3 500LC-3 Workshop Manual and the Hitachi Sumitomo 450-3, 450LC-3, 470H-3, 470LCH-3, 500LC-3 Parts Catalog”>Hitachi Sumitomo 450-3, 450LC-3, 470H-3, 470LCH-3, 500LC-3 Parts Catalog. For larger machines, the Hitachi Sumitomo ZAXIS850-3 Series Parts Catalog – 451 Pages”>Hitachi Sumitomo ZAXIS850-3 Series Parts Catalog – 451 Pages covers the 850 series.

The Automotive Industry Overview page gives background on why OEM data matters across the board. For construction equipment, the same principles apply – factory specs prevent field failures. Another good read is Automotive Industry Overview for comparison of repair standards.

FAQ

Will this parts catalog fit a 470LCH-3 with a standard-length front attachment?

This catalog covers the super long front attachment (Type 20) for both the 450LC-3 and 470LCH-3. If your machine has a standard boom, you’ll need the main ZAXIS450-3 parts catalog. The introduction on page 2 states that only differing parts are listed. Confirm your serial number range is 020001 and up.

Does it include torque specs for cylinder gland nuts?

No. This is a parts catalog, not a service manual. Torque values are in the workshop manual.

If you’re tired of chasing wrong part numbers and wasting billable hours, get the real thing. Hit the access button and grab this 98-page PDF. The factory diagrams and part numbers are ready to cross-reference on your next rebuild. Access the Factory Manual now and keep your shop running on OEM data.