Description

Dynapac CP274 Parts Catalog

I’ve seen too many rollers sit idle because somebody ordered the wrong sprinkler pump or grabbed a scraper kit that didn’t match the serial number break. That downtime costs you money, and it pisses off the operator waiting on you. If you’re working on a Dynapac CP274 – serial number prefix 274B00001 and onward – you need the right part numbers in your hand before you call the parts counter. This Parts Catalog is the factory book, 570 pages, indexed by module and subassembly. It lists every bolt, hose, seal, and service kit with the Dynapac part number. No guessing which filter fits the Cummins QSB 4.5 T3 at 50-hour vs. 1000-hour intervals. The catalog tells you exactly which service kit to order: 4700945805 for 50-hour, 4700945806 for 500-hour, 4700945807 for 1000-hour. That’s the difference between getting the job done and waiting another week for a return.

Service Kits and Repair Kits – Know Your Part Numbers

First thing you’ll notice in the Table of Contents: the catalog starts with service kits and repair kits. That’s smart because most maintenance jobs start with a scheduled service. The 50-hour kit covers basic filters and fluids for the Cummins QSB 4.5 T3 engine. The 500-hour and 1000-hour kits add deeper components. Each kit is broken out on its own page with exploded diagrams and part callouts. Same for repair kits – sprinkler kit (4812155698), scraper kit (4812155696), and air-on-the-run kits front (4812155752) and rear (4812155751). If you’re rebuilding a wheel motor or resealing a gear module, you’ll find the gear module repair kit and sealing kit listed under the rear suspension section. These aren’t generic “universal” seals – they’re the exact dimensions Dynapac engineers spec’d for the CP274.

Frame and Suspension Modules – Get the Right Assembly

Frame section runs from ballast covers to steering cylinders and sprinkler tanks. Page 26 shows the ballast cover with edge trim part number 4700202057 – that little piece of rubber trim is listed separately so you don’t have to buy a whole cover if the trim cracks. The suspension section splits into front and rear. Front suspension includes the tilt shaft, wheel shaft, hub, and wheel modules for Pirelli or optional Michelin tires. Each wheel module has its own page with the complete assembly and individual part numbers for bearings, seals, and hardware. If you’re swapping the left gear module, the catalog gives you the gear module repair kit and the negative multidisc brake repair kit numbers. No cross-referencing with a third-party parts maker – this is straight from the factory.

Engine and Hydraulic System Coverage

Engine room section covers the diesel engine (82 kW), air cleaner, muffler, charge air cooler, water cooler, hydraulic oil cooler, fuel tank, and all associated hoses. The hydraulic system section lists the steering valve (4700396328), hydraulic pump, steering pump, and the thermobypass valve. If the steering drifts or the slide mechanism gets sloppy, you can find the exact steering valve part number and the seals for the hydraulic valve module. The air-on-the-run option is fully documented – compressor module, air dryer kit, pneumatic valve kit, and hose kits for front and rear. This catalog doesn’t tell you how to diagnose a hydraulic problem, but it does tell you what to order when you find the leak.

Why OEM Factory Data Matters Over Aftermarket

I’ve seen aftermarket parts catalogs that list “fits CP274” with a picture that looks close but the bolt pattern is off by 2 mm. That’s a half-day wasted. This is the original OEM print from Dynapac – the same book their dealer parts counter uses. Every part number is verified against the engineering change notice (ECN 09451) that applies to your machine from serial 274B00001. The exploded views are drawn from the actual CAD models, not a photographer’s guess. If you’re ordering a sprinkler pump (4812110394), you know it’s the correct pump because the catalog shows it with the magnet valve assembly. Trust the factory book, not the generic list.

Audience Fit: Who Needs This Catalog

If you own a CP274 and do your own maintenance, this catalog saves you from ordering the wrong 50-hour service kit. If you run a shop that works on compaction equipment, it cuts parts research time from 30 minutes to two minutes. New technicians – the ones who think a “scraper kit” is just a scraper – will learn that the front scraper bracket (page 118) has a separate part number from the scraper module itself. The catalog is also useful for home-garage enthusiasts who maintain their own rollers, though you better have a lift rated for 10+ tons. Every parts order should reference the serial number and the page number from this book. Access the Factory Manual and keep it on your tablet or print the pages for the module you’re working on.

Does this parts catalog include torque specs or service procedures?

No. It’s a parts catalog – exploded views, part numbers, and quantities only. Torque values are in the service manual. You want that? Dynapac CP274 2010 Operators Manual – OEM Factory Specs gives you the maintenance procedures and torque specs.

How do I know if my CP274 serial number falls under ECN 09451?

If your machine has serial prefix 274B00001 and was built after the engineering change notice was released, this catalog applies. Check the machine plate. If you have an earlier serial, look for the previous edition. This catalog covers only that serial break from ECN 09451 onward.

I don’t care if you’re a one-man operation or a fleet manager – having the factory parts breakdown on hand stops the “I think this will fit” nonsense. Rollers are expensive, and a wrong part can take a machine out of service for a week. This catalog is what you put on the workbench next to the laptop. If you also work on the electrical side, grab the Dynapac CP224 CP274 Electrical System manual to trace wiring without flipping through 570 pages. And for another roller in the same family, the Dynapac PL2000LS Parts Catalog (258 Pages) – OEM Factory Spec covers the pavement layer. Those are separate purchases – but this CP274 catalog is the one you need for parts ordering. Access the Factory Manual and stop guessing. That’s it.