Description

Caterpillar Elevated Sprocket Tractors, Skidders, Low Sprocket Tractors, Track-Type Loaders, Excavators / Front Shovels Parts Catalog

I’ve been around enough shops to know what happens when you guess on a part number. You order a track adjuster for a D8R, get a sprocket for a D9N, and the machine sits for two days while the parts guy backorders the right thing. That’s wasted billable hours, and it’s the reason I keep a copy of this Caterpillar Elevated Sprocket Tractors, Skidders, Low Sprocket Tractors, Track-Type Loaders, Excavators / Front Shovels Parts Catalog within arm’s reach. 866 pages of factory part numbers, no aftermarket guesswork, no outdated cross-references.

This is not a service manual. You won’t find torque specs or overhaul procedures here. But if you need to source undercarriage components—track chains, rollers, idlers, sprockets, final drive seals—this catalog is the only reference that matches Caterpillar’s own numbering system. The cover says “Undercarriage Parts Sales Kit, 3rd Edition.” Caterpillar designed it for dealer salesmen, but in practice it works better on a shop desk than in a salesman’s briefcase.

Undercarriage Parts Coverage by Model

Thumb through the first four pages and you’ll see the table of contents broken into six main sections: Elevated Sprocket Tractors, Skidders, Low Sprocket Tractors, Track-Type Loaders, Excavators / Front Shovels, Paving Products, and Mobile Track. Each section starts with an index listing every model covered. For Elevated Sprocket Tractors alone you get D5M, D4H, 561H Pipelayer, D6M, D5H, D6R, D6H, D7R, D7H, D8R, D8N, 583R, 578 Pipelayer, D8L, D9L, 589 Pipelayer, D9R, D9N, D10R, D10N, D10, D11R, D11N. And that’s just the first 170 pages. The Skidders section covers 517, 527, plus the D4H TSK and D5H TSK variants. Low Sprocket Tractors include D3C through D9 and their pipelayer versions.

Page 3 carries a warning from Caterpillar: this book is not a substitute for the formal Parts Books or Numerical Parts Record. They mean you shouldn’t use it to generate a sales order without cross-checking. For a shop ordering parts, the cross-reference is exactly why you need it. The Part Number Index (starting at page 833) lets you look up any part and see which machines it fits. I’ve used that index to verify a link assembly that listed the same part number for a D6R and a D7H—saved a return.

Excavators / Front Shovels: 240 Pages of Data

The excavator section is the thickest part of the catalog, and it covers everything from the mini 307B up to the 5230 and the long-discontinued 245. You get models like the 320C, 320B, 322B, 325B, 330B, 345B, 350, 375, 5080, 5130B, 5130, plus all the E-series (E70B, E110B, E120B, E140, E180, E200B, E240C, E300B, E450, E650). The section also includes front shovels under the same umbrella. For each model you’ll find exploded-drawing style part lists for the undercarriage frame, track frame, recoil spring group, final drive, and sprocket rim. Need a seal group for a 330B front idler? It’s in there.

Why the OEM Parts Catalog Beats Aftermarket Databases

I’ve tested aftermarket parts catalogs that claim to cover Caterpillar. They choke on the D11N undercarriage because the sprocket segment count changed midway through production. This catalog shows the serial number break for every running change. Caterpillar does not slap a generic drawing on a page and call it done. Each part number is tied to a specific machine arrangement. If you order a sprocket for a D10R using an aftermarket database, you’re rolling dice. With this catalog, you check the arrangement number and the part number lines up. That’s the difference between a job done and a job redone.

Related manuals you should consider: Caterpillar Parts Sales Kit Undercarriage 5th Edition if you need a newer edition, Caterpillar C15 2006 Parts Catalog – Factory OEM 884 Pages for engine parts, and CATERPILLAR TA22-M4WD Parts Manual July 2006 for ag tractors. For background on how parts catalogs fit into the supply chain, the Automotive Industry Overview on Wikipedia is worth a read. And if you’re dealing with engine diagnostics, understanding the Mass Air Flow Sensor (MAF) can help you link engine performance to undercarriage wear patterns–though that’s a stretch.

7 Sections, 866 Pages, One Complete Reference

Let me break it down by numbers. The seven major sections are: Elevated Sprocket Tractors (pages 3-178), Skidders (179-220), Low Sprocket Tractors (221-400), Track-Type Loaders (401-540), Excavators / Front Shovels (541-760), Paving Products (761-784), Mobile Track (785-792). Then you get Product Information (793-820), Conversion Guide (821-832), and the Part Number Index (833-866). That’s 866 pages of factory data, not a single reprint or copy of aftermarket fluff. The Product Information section contains features and benefits for high-sales-volume parts, which helps when a customer asks why they should pay for a Caterpillar track chain over a cheaper alternative. The Conversion Guide translates old-to-new part numbers for superseded items.

D10R and D11N: What the Catalog Tells You

Both the D10R and D11N appear under Elevated Sprocket Tractors. The catalog lists sprocket segments, track roller frames, carrier rollers, and scraper bars specific to each model. For the D10R, the track chain pitch is 10½ inches; for the D11N it’s 11 inches. If you try swapping chains between them with aftermarket data, you’ll bend hardware. The catalog gives you the exact part numbers and arrangement codes. I once rebuilt an undercarriage on a D11R using this catalog and didn’t have a single misorder.

Is this a service manual?

No. It is a parts catalog for ordering undercarriage components. No torque values or repair procedures.

Does it cover the D6R undercarriage?

Yes. Pages 57 onward list D6R and D6H track roller frames, idlers, sprockets, and chain groups with part numbers.

Can I use this to find part numbers for a 320C excavator track frame?

The excavator section (starting page 541) includes 320C, 320B, and 320. You’ll find part numbers for the track frame assembly, recoil spring, and carrier roller.

How do I verify part numbers from this catalog before ordering?

Caterpillar says to cross-check against the Numerical Parts Record (NPR) or your dealer’s parts system. This catalog is a quick reference tool, not the final authority for pricing. But in my experience, if you match the arrangement number in the catalog to your machine’s serial number prefix, the part numbers are correct 99% of the time. I still check the NPR for high-dollar items like sprocket rims because a misorder is expensive. The catalog’s Part Number Index helps you find alternate applications for the same part.

You’ve seen what happens when a shop relies on memory or secondhand lists. It costs time, money, and credibility. A machine sitting with a torn up idler while you wait for the right part? That’s on you. Get the factory data on your hard drive: Access the Factory Manual.