Description

Dynapac CA 25, F6L, GM 4-53T, GM 4-53, 6BT5.9 1987 Parts Catalog

Been wrenching on a Dynapac CA 25 vibratory roller and got stuck chasing a part number that doesn’t match? I’ve been there. The factory parts catalog from 1987—318 pages of exploded views, torque callouts, and engine-specific breakdowns—is what you need under the fluorescent lights. This isn’t some aftermarket scan with blurry lines. It’s the original spare parts catalogue from Dynapac, reprinted November 1987, covering the F6L, GM 4-53T, GM 4-53, and 6BT5.9 diesel variants. If you’re rebuilding a drum, replacing a cooling system hose, or ordering a torque hub seal, you need the OEM part numbers from this book.

Engine Variants: Why the Parts Catalog Matters

Group 3 in this catalog dives into five distinct engines: Caterpillar D-320B, Deutz F6L912, Detroit 3-53, Detroit 4-53, and Cummins 6BT5.9. Each engine gets its own section with part numbers for fuel system, exhaust, air cleaner, and cooling system. I’ve seen guys pull a water pump off a Dynapac and order the wrong one because they grabbed an aftermarket cross-reference. This catalog lists the exact Dynapac part number for each engine variant. That’s the difference between a roller running tomorrow and sitting on blocks for a week.

Torque Hub Assembly: Group 2 in Detail

Group 2 covers the drum and torque hub. Page references in the catalog show the torque hub exploded view with ref. numbers tied to the parts table. If you’re replacing bearings or seals in the CA25 drum, you need the correct part numbers and the torque values for the hub bolts. The OEM manual gives you those numbers—no guessing. I’ve seen a torque hub fail because a tech used a generic bolt. Don’t be that guy.

Cooling System Coverage Across Engines

The cooling system section under Group 3 breaks down radiators, hoses, and fan assemblies for each engine: Caterpillar, Detroit 3-53, Detroit 4-53, and Cummins. The Detroit 4-53T uses a different radiator than the naturally aspirated version. If you mix them up, you’ll overheat on the first compaction pass. This catalog shows the correct radiator part number per engine. And the torque for the fan hub nut? It’s in the data—page numbers are in the numerical register at the back of the book.

Source Authenticity: 1987 Factory Print vs Aftermarket Reprints

This is the genuine Dynapac spare parts catalogue, order number 498370, reprinted in 1987. It replaces S-10200-2 and covers serial numbers 4143 to 4310 and 4400 up. Aftermarket reprints often compress the drawings, lose torque tables, or omit the numerical register that maps every part number to its group page. I’ve compared them. The factory print has clear X-ray views with ref. numbers inside rectangles or circles—that’s how you know it’s an OEM document. Save yourself the headache and get the real thing. For more on Dynapac equipment history, check out Dynapac Wikipedia entry.

3 Reasons to Use This Parts Catalog Over Generic Cross-References

First, torque specs. The catalog includes torque values for the torque hub and differential carrier. Generic cross-refs don’t list torque. Second, the group system—Group 1 frame, Group 2 drum, Group 3 engine, Group 4 transmission—makes it easy to find parts without flipping through 300 pages blind. Third, the numerical register at the end lists every part number with its group and page. You can look up a bolt number and see exactly where it goes. That’s factory engineering, not a third-party guess.

Running a shop? Pair this with the Dynapac CA 25 Parts Catalog for sister models. Need the full series breakdown? Dynapac CA 25 Spare Parts Catalogue covers variants. For attachments and equipment options, Dynapac CA 25 Series Spare Parts Catalog – Section: Group 9 Equipment fills out the toolbox.

FAQ

Does this catalog include torque specifications for the drum hub?

Yes. The torque hub subsection in Group 2 lists torque values for hub bolts.

Can I use this manual to identify parts for a Cummins 6BT5.9 engine swap into a CA25?

Absolutely. Group 3 devotes a full subsection to the Cummins 6BT5.9, including cooling system, fuel system, exhaust, and air cleaner parts. The exploded views show exact placement of each component, so you can order the correct Dynapac brackets, hoses, and pulleys. If you’re retrofitting a different engine, the OEM part numbers help you source the right adapters. I’ve seen this manual used for exactly that job—saves hours of trial-and-error.

For a broader perspective on the heavy equipment industry, read this Automotive Industry Overview.

Access the Factory Manual now and get the 1987 Dynapac CA 25 spare parts catalogue on your tablet or shop computer. 318 pages of OEM data—no watermarks, no blurry scans.