Description

Dynapac CA 51 Parts Catalog

If you’ve ever ordered a part for a Dynapac CA 51 and got the wrong bearing or the wrong seal because you guessed from an aftermarket diagram, you know the feeling. Wasted money. Roller down. Boss breathing down your neck. That stops here. This is the factory Dynapac CA 51 Parts Catalog — 166 pages of the same exploded views and part numbers the dealer uses. I’ve been turning wrenches for 28 years, and I trust OEM documentation over third-party prints every time. Here’s what you need to know.

Frame and Drum: Groups 10 and 20

Frame parts and drum components get broken fast on a vibratory roller. The catalog splits them into group 10 (Frame) and group 20 (Drum). Page 3 shows the group index. You’ll find every bracket, mount, and bolt numbered in an exploded view. No more guessing which bushing fits where. The part numbers are factory-original — cross-reference them against what you pull off the machine.

Engine Group 30 — Caterpillar D320B NA

That six-cylinder Cat diesel powers the CA 51. Group 30 covers every replaceable item: injectors, fuel lines, filters, gaskets. The serial number range on page 1 tells you if this catalog matches your unit (valid for ser. no 479687-). I’ve seen guys order the wrong fuel injector line because they used a diagram from Dynapac site that wasn’t clear. This catalog uses the same numbering as the factory order system.

Transmission Group 40: Keep the Power Flowing

Transmission parts are pricey and easy to misidentify. Group 40 gives you the full breakdown of the power transfer system. Whether it’s a seal, a gear, or a shift lever, the position numbers on the exploded diagram match the tables on the facing page. Never buy a “compatible” part when you can match the OEM number exactly. The Dynapac CA 51 Spare Parts Catalog is the same document I’d pull up if I were ordering parts for a customer.

What the Hydraulic System Group 50 Covers

Hydraulics scare a lot of home garage guys. Group 50 doesn’t care. It lists every hose, fitting, pump cartridge, and valve body. You get the part number and the quantity required for each assembly. No guesswork. If you’re rebuilding a cylinder, the seal kit number is right there. Page 4 explains how to read the assembly structure — you’ll see if a part is a “major assembly” (position number in a rectangle) or a subcomponent (circled number). That saves you from ordering a whole pump when you only need a shaft seal.

166 Pages of Factory Specs — No Aftermarket Reprint

Third-party catalogs often redraw the graphics and change part numbers. This isn’t one of those. It’s a direct scan of the official Dynapac spare parts catalogue, Swedish-English bilingual, printed when the machine was new. Compare it to the Dynapac CA 51 Parts Catalog from other sources — the difference is in the detail. Every page number, group header, and part note is preserved. Use the numerical register (page 100) to look up any part number and find which group and page it lives on.

Use the Numerical Register to Locate Any Part

Say you’ve got a part number scribbled on an old receipt. Punch it into the register at the back of the catalog. It tells you the group and page where that part appears. Then cross-check with the exploded view. That’s how you avoid ordering the wrong part. The DYNAPAC CA 51 Vibratory Roller Spare Parts Catalogue includes that register — and if you’re new to reading parts manuals, take a minute to read page 4’s instructions. If you want to understand how professional workshops use these, the Automotive Industry Overview provides good background on documentation standards.

FAQ

Does this catalog include torque specs?

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

How do I identify the correct part number?

Start with the serial number range on page 1—the catalog applies to serial numbers from 479687 onward. Then go to the group index on page 3, find your system (e.g., Engine group 30), open that section. Each group has an exploded view with position numbers. Match the position number to the table on the facing page. The table lists part number, description, and quantity. The numerical register at the back (page 100) lets you search by part number to find which groups it appears in. That’s how you avoid ordering the wrong part.

Order the wrong part once, you’ll understand why factory documentation is worth having on your bench. Access the Factory Manual and keep a copy on your tablet or printed out. Your next parts order — and your wallet — will thank you.