FIAT Kobelco CK2500-II Technical Manual – Factory Specs for the 500,000 lb Crane

If you are working on a CK2500-II crawler crane and don’t have the factory torque specs, you are asking for a failure. I’ve seen too many lifted lugs and stripped bolts on these machines because someone relied on a generic chart. This FIAT Kobelco CK2500-II Technical Manual runs 32 pages of the exact numbers the assembly line uses. Page 1 gives you the max lift capacity of 500,000 lbs at 15 ft radius. That’s not a suggestion – that’s a structural limit.

CK2500-II Lift Capacities and Boom Lengths

Page 1 of this Technical Manual states the maximum lift capacity: 500,000 lbs (226,800 kg) at a 15 ft operating radius with a 50 ft boom. Maximum boom length is 300 ft, and with a jib you can reach 250 ft + 100 ft. These numbers are not approximate – they are the design limits set by FIAT Kobelco. When you are rigging a lift, you need these exact figures. The manual also lists working weight: approx 476,200 lbs with basic boom and hook block, and ground pressure of 14.6 psi.

Engine Data: Hino P11C-UN on Page 2

Page 2 gives you the power plant specs. Hino P11C-UN, 6-cylinder, 4-cycle diesel, 642 cu.in displacement, rated at 331 HP at 2,000 rpm. Maximum torque is 959 lbs-ft at 1,500 rpm. The manual includes the starter (24V/6.0 kW), alternator (24V/50A), battery setup (two 12V 170AH in series), fuel tank capacity 106 US gal, and filter types. This is the data you need when sourcing replacement parts or setting up the injection timing.

Hydraulic System: Piston Pump Flow Rates

The Technical Manual documents two piston pumps for load hoist and propel, each with max flow rate of 66.5 US gal/min. A separate boom hoist pump delivers 87.6 US gal/min. These numbers are critical when diagnosing sluggish hydraulic response or selecting replacement pumps. Aftermarket manuals often list vague ranges – this one gives you the factory spec from FIAT Kobelco.

Why a 32-Page Factory Manual Beats Aftermarket Copies

I have seen third-party reprints that skip the working speed table, the gradeability info (30% with basic boom), and the exact dimensions like counterweight ground clearance of 4 ft 11 in. This OEM Technical Manual includes every dimension from the center of rotation to boom foot pin (4 ft 7 in) to shoe width (52 in). You get travel speeds (0.69/0.44 mph), swing speed (2.2 rpm), and hoist line speeds (360 ft/min). If you are doing a rebuild or a safety inspection, guessing these numbers is not an option. For the related shop-level service info, check the KOBELCO CK2500-II CKE2500-II Shop Manual or the FIAT Kobelco CK2500-II Operators Manual – 461-Page Factory Specs.

Get the Right Specs Before You Lift

This Technical Manual is not a repair manual – it gives you the specifications you need to operate, maintain, and inspect the crane correctly. The 32 pages cover the machine’s capacity limits, dimensional constraints, and hydraulic performance data straight from FIAT Kobelco. If you need deeper service procedures, the FIAT Kobelco CK2500-II, CKE2500-II Workshop Manual – Factory Specs covers those. For a primer on how this crane’s drivetrain differs from a standard Manual Transmission, read that article. Also compare with Manual Transmission setups on other heavy equipment.

FAQ: Common Questions About This Technical Manual

Is this manual specific to the CK2500-II?

Yes. It covers only the CK2500-II model.

Does it include torque specs for the engine?

It includes the engine output specs and fuel system data, but the manual is focused on crane specifications. Torque values for individual fasteners are in the separate Workshop Manual listed above.

Can I use this for the CKE2500-II variant?

No. The CK2500-II and CKE2500-II have different capacities and configurations. You need the exact manual for your model. The CKE2500-II Workshop Manual is a separate document – see the related product links above. Using the wrong spec can lead to overloading or improper maintenance, which I have seen cause catastrophic failures in the field. Do not risk it.

How do I download the PDF?

After purchase, you get instant access to the 32-page PDF. Download the Factory Manual now directly from your account.

You need the original factory numbers, not a copy of a copy. This FIAT Kobelco CK2500-II Technical Manual is the same document that ships with the machine. Download the Factory Manual and keep it pinned to your workbench.