Description

Dynapac CA 25 Parts Catalog – Factory OEM, 338 Pages

You’ve ordered parts from aftermarket catalogs before. You get a box, open it, and the bracket doesn’t match the bolt pattern. That’s because third-party catalogs guess at dimensions and skip revision numbers. I’ve been wrenching since before ASE certifications existed, and I’ve learned one thing: OEM documentation is the only documentation. This Dynapac CA 25 Parts Catalog is a factory print – 338 pages of exploded view drawings, genuine part numbers, and assembly breakdowns that match what Dynapac bolted on at the factory. No guesswork. No wasted time chasing wrong parts.

Group 01: Frame, Fender, Hydraulic Oil Tank, and Steering Link

The manual opens with Group 01 – the chassis structure. It covers the frame (two sub-groups), hood/fender assembly, scrapers, and the steering linkage. Each exploded view includes a reference table with Dynapac’s own part numbers. You’ll find the hydraulic oil tank mounting brackets and the bolts that hold the fender – down to the washer size. Page 6 shows the scrapers and page 14 the steering link articulation. If you need to replace a bent tie rod or a cracked tank bracket, this section tells you exactly which part to order.

Group 02: Drum Assembly – Standard and D/PD Versions

Two drum configurations exist for the CA 25: Standard and D/PD. Group 02 separates them clearly. Page 2 shows the standard drum, page 8 the D/PD version. The catalog lists seals, bearings, and the vibratory mechanism components. No aftermarket catalog I’ve seen gets the seal cross‑section right – Dynapac’s drawings show the exact O‑ring groove profile. That matters when you’re running the drum at compaction speeds and don’t want a leak.

Torque Hub (Fairfield): Page 16 – Torque Specs and Planet Gears

The Fairfield torque hub is the final drive for the CA 25. Group 03, page 16, breaks it into planet gears, bearings, and the ring gear. Torque values for the hub mounting bolts are listed in the illustration – use them. I’ve seen hubs fail because someone guessed at the tightening sequence. If you’re rebuilding this hub, the catalog gives you the part numbers for bearing kits and the Fairfield proprietary nut. Do not mix brands here; the stack‑up tolerances are tight.

Engine Section: Caterpillar 320B – Complete Assembly Breakdown

The heart of the CA 25 is the Cat 320B diesel. Group 03 covers the engine assembly (page 2), radiator (page 8), fan guard (page 12), and air cleaner (page 14). The engine diagram shows the mounting brackets, alternator bracket, and the cooling fan assembly. If you need a water pump or a belt tensioner, the part numbers here are direct from Caterpillar. The radiator section includes hose part numbers and the shroud dimensions. This alone can save you a half‑day of cross‑referencing.

Why a Factory Parts Catalog Beats Aftermarket Reprints

Aftermarket catalogs often crop photos and omit the revision letters. Dynapac issued this catalog with a series range – each CA 25 from serial 689800‑ upwards uses specific parts. The catalog header (page 2) lists the valid series for each engine variant: STD, D/PD, and the corresponding E‑mark versions. If you buy a part from a generic supplier, you might get the pre‑’98 bracket that doesn’t fit your unit. This catalog eliminates that risk. You can verify part numbers against Dynapac official parts database or consult Automotive Industry Overview for general knowledge, but the spec data comes from here.

Who Needs This 338‑Page Dynapac CA 25 Parts Catalog?

Three groups: fleet mechanics maintaining multiple rollers, independent shop owners who bill by the hour and can’t afford wrong parts, and owners who do their own maintenance. If you’ve ever ordered a hydraulic filter by cross‑reference and ended up with the wrong thread pitch, you’re the target. The catalog covers the frame, drum, torque hub, engine, radiator, fan guard, and air cleaner – every major assembly. Related manuals for other variants include Dynapac CA 25 Parts Catalog (this one), Dynapac CA 25 Spare Parts Catalogue for superseded parts, and Dynapac CA 25 Series Spare Parts Catalog – Section: Group 9 Equipment for optional attachments.

FAQ – Common Questions About the CA 25 Parts Book

Does this catalog include torque specifications?

Yes, torque values are listed on page 16 for the Fairfield torque hub mounting bolts. Other torque specs appear inline in the illustrated breakdowns for fasteners like the drum bearing retainers.

Does it cover the Caterpillar 320B engine in detail?

Group 03 dedicates 14 pages to the engine: assembly drawing, radiator, fan guard, and air cleaner. The assembly page (page 2) shows the complete engine with mounting brackets and alternator. The radiator page (page 8) includes hose routing and fan shroud part numbers. If you need the internal engine parts like pistons or cylinder head, you need the Cat engine manual – this catalog covers the external attachments and mounting hardware that Dynapac added. It tells you which water pump bracket and belt combination fits the CA 25 chassis.

Is this a reprint or an original OEM document?

It is a digital reproduction of the original Dynapac printed catalog. The page layout, part numbers, and diagrams are identical to the factory document. It is not a scanned copy with missing pages – all 338 pages are included.

Can I use this to order parts directly from Dynapac?

Absolutely. Every part number in the catalog is a Dynapac factory part number. You can give those numbers to your dealer or use them in online parts search tools. The catalog also lists the serial number range applicability on page 2, so you can confirm fitment before ordering.

I’ve been turning wrenches for 28 years. I don’t recommend a manual unless I’d use it myself on a Friday afternoon when the customer is waiting. Access the Factory Manual now and stop guessing which bolt fits which hole.