Description

Caterpillar 320D L, 320D 2010 Parts Catalog – Factory OEM Print

You call the dealer, give them a serial number, and they quote you a part that doesn’t match what you pulled off the machine. That’s the kind of headache this Caterpillar 320D L, 320D 2010 Parts Catalog kills dead. I’ve been wrenching for 28 years, and I’ve seen more misordered hydraulic lines and mislabeled seals than I care to count. The root cause is almost always an aftermarket parts book that took a guess at supersessions or skipped regional variations. This is not that. This is the actual factory book Caterpillar printed in 2010 for the 320D and 320D L excavators. 728 pages. No reprints. No copy-shop garbage.

Why a Factory Parts Catalog Beats Aftermarket

Aftermarket catalogs copy the OEM data once and then let it rot. They don’t recieve updates for engineering changes, and they flat-out ignore regional option codes. The Parts Catalog you’re looking at came from Caterpillar’s own SIS database. It covers machines with FAL1-Up, KGF1-Up serial prefixes and the C6.4 engine. Every illustration is a direct scan of the original, not a redrawn cartoon. When you need a part number for a CHASSIS AR or an ENGINE AR-COMPLETE, you get the exact number that fits your machine’s build. The index on page A17 lets you cross-reference by part name, so you don’t have to flip through every section blind.

What the 728 Pages Cover

The manual starts with GENERAL INFORMATION (page A6) that explains how to read the illustrations and how Caterpillar structures their group numbers. Then you hit REPAIR ALTERNATIVES, SUPPLEMENTAL COOLANT ADDITIVES, and a MAINTENANCE PARTS section starting on page A11 that lists filters, belts, and common wear items with their factory part numbers. After that comes the heavy lifting: MACHINE ARRANGEMENT (page 1) breaks down the chassis, cab options, hydraulic options, cold weather kits, couplers, and regional configurations. ENGINE ARRANGEMENT (page 50) covers the whole C6.4 engine – from the engine mounting group to the fan pulley. Under BASIC ENGINE (page 79) you get the CAMSHAFT GP, CYLINDER HEAD GP, PISTON & ROD GP, and every other subassembly broken into exploded views with callouts. The LUBRICATION SYSTEM and COOLING SYSTEM sections follow with their own line groups. Each part has a reference number and a quantity. That’s it – no fluff, no filler.

Engine Arrangement: Where to Find the Right Components

If you’re rebuilding the top end, turn to ENGINE ARRANGEMENT, page 50. The TABLE OF CONTENTS lists every group under ENGINE AR-COMPLETE (page 60), INSTALLATION AR-ENGINE (page 78), and BASIC ENGINE. For example, the CYLINDER HEAD AS is on page 88 – it shows the head, valves, springs, retainers, and the correct gasket set number. Need the CRANKSHAFT GP? Page 83. FLYWHEEL GP? Page 90. Each page has a parts illustration with leader lines pointing to a numbered list. The part number, description, and quantity per machine are right there. Do yourself a favor – look up the part number before you order, not after you have the wrong box on the bench.

Using the Index and Maintenance Parts Sections

The index starting on page A17 is alphabetical by part name. If you know you need a “breather” but don’t know which group it’s in, the index sends you to BREATHER GP under LUBRICATION SYSTEM (page 136). The MAINTENANCE PARTS section (page A11) is a separate quick-reference for oil filters, fuel filters, air filters, belts, and coolant additives. It lists the part numbers and quantities for scheduled maintenance. That section alone saves you the time of digging through the entire engine arrangement when all you need is a fuel filter. Wrap the manual in a binder and keep it on the shop desk. Trust me, you’ll use it.

Who Needs This Catalog?

If you own a 320D or 320D L, run a fleet of these machines, or work in a shop that services them, this is the only parts reference you should trust. Aftermarket catalogs are fine for a rough idea, but when you need the correct seal kit for a hydraulic cylinder or the right shim for the valve mechanism, you can’t afford a mismatch. Home garage guys who do their own rebuilds will find the exploded views worth the price alone. Dealers and parts counter staff – this is the same data the dealer parts system uses, just in a PDF that doesn’t need an internet connection. And for the training side, check out the related manuals: CAT 320D L Hydraulic Excavator Service Manual and Caterpillar 320D-336D Excavators 2008 Training Manual for deeper repair procedures. Caterpillar 320D & 320D L Excavators Parts Manual is the companion you want if you need separate volume coverage.

For a broader context on how OEM documentation supports the Automotive Industry Overview, remember that factory manuals are the foundation. Automotive Industry Overview

Frequently Asked Questions

Does this Parts Catalog include part numbers for every component on the 320D L?

Yes. It lists factory part numbers for every group shown in the table of contents.

How do I use this catalog to verify a part number I already have?

Use the alphabetical index on page A17. Look up the part name (e.g., “CYLINDER HEAD AS”), then turn to the page listed (page 88 in that case). Compare your part number against the illustration callout. If the number matches, you’re good. If it doesn’t, check the NOTES column for supersessions or regional changes. The manual also includes a MEMORANDA page at the front that lists any running changes made after the original print date. That page is critical – many techs skip it and end up ordering a deleted part number that got replaced by a new revision. The OEM catalog catches those updates because it’s the same dataset the dealer system uses.

Look, you’ve got a 728-page factory document that tells you exactly what part goes where. No third-party guesswork. No generic illustrations. Access the Factory Manual and keep your rebuilds on track.