Description

FIAT Kobelco CK850-II Technical Manual – Factory Specs for the 85-Ton Crawler Crane

If you’re working on a FIAT Kobelco CK850-II Technical Manual and don’t have the factory specs, you’re taking chances with both the machine and the people around it. I’ve spent enough time under heavy iron to know that guessing boom geometry or hydraulic pressures finishes jobs early – in the wrong way. This is the original OEM Technical Manual from FIAT Kobelco, 30 pages of the exact data the factory used to build and test the CK850-II. You want the lifting capacity at 11 feet radius? Page 1 has it at 170,000 lbs. You need the Mitsubishi engine torque? Page 2 gives you 593 lb-ft at 1,600 rpm. This is not rehashed aftermarket junk.

Lifting Capacity and Boom Configurations

Page 1 spells out the max lifting capacity: 170,000 lbs (85 US tons) at an 11-foot operating radius with a 40-foot boom. The manual gives you the whole range – basic boom 40 feet, max boom 200 feet, and jib combinations up to 180 + 60 feet. You get the working weight (approx. 162,700 lbs), ground bearing pressure (11.2 psi), and gradeability (40%). That last number matters if you’re setting up on a slope. Don’t guess it. The factory printed it so you don’t have to.

What Engine Specs Does This Manual Cover?

Page 2 dives into the power plant: Mitsubishi 6D16-TLA2B, a 6-cylinder diesel with a 4.65 x 4.53-inch bore and stroke, 460 cubic inches of displacement. Rated output is 213 HP at 2,000 rpm, maximum torque 593 lb-ft at 1,600 rpm. The manual includes the starter (24V/5.0 kW), alternator (24V/80 Amp), battery configuration (two 12V 120 AH in parallel), and fuel tank capacity – 106 US gallons. Approximate fuel consumption is 0.370 lb/HP-hr; at full load that’s 10.8 US gal/hr. If you’re chasing a fuel issue, those numbers are your baseline.

3 Reasons to Use OEM Documentation for Heavy Equipment

First, aftermarket manuals often transpose metric and imperial values. This one gives you both – foot-pounds and Newton-meters – straight from the factory. Second, the CK850-II has a Dial-type Speed Control System for line speeds; the aftermarket versions I’ve seen skip the control logic. Third, OEM specs include safety margins for lifting. The manual states line speeds at no load and first layer of rope – that’s the only number you should use when setting up.

Working speeds are on page 1: hoist line speed 390 to 10 ft/min, swing speed 4.0 rpm, travel speed 1.18 mph high / 0.75 mph low. These specs control crane stability. Ignore them at your own risk.

Get the Right Torque Data from Page 2

The engine section lists the Mitsubishi 6D16-TLA2B bore and stroke – 4.65 x 4.53 inches – but you won’t find fastener torque values in this manual because it’s a technical overview, not a repair manual. For that, you want the KOBELCO CK850-II CKE800 CKE700 Shop Manual. This Technical Manual is about specifications and capacities, which is exactly what you need when you’re verifying a crane’s configuration before a lift.

Hydraulic Pump System: Factory Data

Section 4.2 lists the hydraulic pumps: two piston pumps for load hoist, boom hoist, and propel; one piston pump for swing; two gear pumps for control system and auxiliary; and a break cooling pump. All driven from a heavy-duty pump drive. If you’re replacing a pump, you need to know the pump type and flow rates. The manual doesn’t give individual flow numbers, but it confirms the configuration so you can order the correct replacement. That alone saves a day of cross-referencing part numbers.

For operator safety, the FIAT Kobelco CK850-II 2007 Operators Manual – Factory Specs & Safe Operation covers daily checks and load charts. Pair it with this Technical Manual and you have both the how-to-operate and the why-it-works.

FIAT Kobelco CK850-II Technical Manual: What’s Inside

The 30 pages are organized into clear sections: General Description, General Dimensions, Working Speed, Upper Machinery (engine and pumps), and more. Page 1 gives you the lifting chart and overall dimensions – height, width, crawler length. Page 2 covers the engine and hydraulic pump list. The manual is short because it’s focused on specs, not step-by-step repair. If you need a full teardown guide, grab the FIAT Kobelco W80 2004 Technical Manual – 46-Page OEM Factory Specs for a smaller machine, or the shop manual mentioned above.

Don’t confuse the travel drive with a Manual Transmission – this crane uses hydraulic motors for propel. The speed specs on page 1 (1.18 / 0.75 mph) are based on hydraulic flow, not gear ratios. Same goes for the swing drive: it’s a piston pump, not a Manual Transmission assembly.

Does this manual include wiring diagrams?

No. This is a technical overview covering lifting capacities, dimensions, engine specs, and hydraulic pump configurations. Electrical schematics are not included.

Can I use this manual for engine overhaul?

Not directly. It gives you the Mitsubishi 6D16-TLA2B specs – bore, stroke, fuel consumption – but no step-by-step teardown procedures. For that you need the separate Shop Manual. This Technical Manual is your reference for verifying engine ratings and ordering the correct parts. I keep it in the cab when I’m setting up a lift because the load chart and ground pressure are critical for safe operation. If you’re doing an inframe rebuild, grab the shop manual instead. The 30 pages here won’t walk you through piston ring gaps or torque sequences, but they’ll tell you the rated output and fuel consumption so you can compare against actual performance.

Access the Factory Manual and keep it with the machine. When the inspector asks for the lift capacity at 40-foot radius, you’ll have the answer on page 1. When the owner wants to know if the engine is making rated power, page 2 gives you the baseline. This is the same data the dealer uses – no guesswork, no aftermarket interpretations.